US2382322A - Safety control for pressing machines - Google Patents
Safety control for pressing machines Download PDFInfo
- Publication number
- US2382322A US2382322A US364287A US36428740A US2382322A US 2382322 A US2382322 A US 2382322A US 364287 A US364287 A US 364287A US 36428740 A US36428740 A US 36428740A US 2382322 A US2382322 A US 2382322A
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- US
- United States
- Prior art keywords
- valve
- pressing
- fluid
- fluid motor
- control member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F71/00—Apparatus for hot-pressing clothes, linen or other textile articles, i.e. wherein there is substantially no relative movement between pressing element and article while pressure is being applied to the article; Similar machines for cold-pressing clothes, linen or other textile articles
- D06F71/04—Apparatus for hot-pressing clothes, linen or other textile articles, i.e. wherein there is substantially no relative movement between pressing element and article while pressure is being applied to the article; Similar machines for cold-pressing clothes, linen or other textile articles power-actuated
- D06F71/06—Apparatus for hot-pressing clothes, linen or other textile articles, i.e. wherein there is substantially no relative movement between pressing element and article while pressure is being applied to the article; Similar machines for cold-pressing clothes, linen or other textile articles power-actuated fluid-actuated
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/877—With flow control means for branched passages
- Y10T137/87708—With common valve operator
- Y10T137/87748—Pivoted or rotary motion converted to reciprocating valve head motion
- Y10T137/87756—Spring biased
Definitions
- My invention relates to improvements in safety controls for pressing machines, preferably to pressing machines adapted for use in pressing ;,garments and having fluid pressure actuated op- ,erating means.
- each handle is actuated in the same direction to close the pressing machine, the actuation of one handle only in the same direction being operable to open the pressing machine to separate the pressing members so that there can be no possibility of accident.
- a further object of my invention is to further insure the safety of the operators hands by providing a latch which will not only not latch to keep both hands occupied until both manual means are each moved to an actuating position, but also one which will not take effect until they are then conjointly released, thereby keeping the operators hands occupied until a definite mental step is necessary to effect the actuation of the latch.
- the pressing machine is preferably so constructed as to employ only a relatively light pressure while bringing the members into pressing juxtaposition, which pressure immediately changes to a relatively higher ironing pressure after there is no danger of the hands being caughtbetween the pressing members.
- a further feature of my invention is to proing means when said pressing members are brought into pressing juxtaposition to permit release of the handles at substantially the instant when the device changes from the application of a light to heavy ironing pressure, thereby freeing the operator's hands for other uses during the application of the heavy ironingpressure.
- a further feature of my invention is to provide the handles in a hidden and yet accessible place where they will not catch on the clothes being pressed and for this purpose I preferably locate them immediately underneath the front end of the usual table and provide guard means, such as a downturned flange at the front of the table to protect the handles.
- control means employ a quick acting flush valve to rapidly exhaust the fluid motor to separate the pressing members, located in the feed line to the fluid motor, preferably immediately adjacent the fluid motor.
- a quick acting flush valve to rapidly exhaust the fluid motor to separate the pressing members, located in the feed line to the fluid motor, preferably immediately adjacent the fluid motor.
- I also provide a bleeding trigger exhaust valve in said feed line and an inlet valve in said feed line and suitable means to effect opening of said inlet;
- the trigger exhaust valve and closing of said trigger exhaust valve substantially simultaneously toactuate the-fluid motor and closing of said inlet valve and opening of said trigger exhaust valve substantially simultaneously, the trigger exhaust valve functioning to release the quick acting flush valve in the same feed line to immediately evacuate the motor. If the quick acting flush valve be not employed, or should fail in use, it is obvious that the exhaust valve itself may evacuate the fluid motor in a slower manner.
- a further object of my invention is to simplify the control means for the fluid motor by employing the inlet valve and thebleeding trigger exhaust valve in a single master valve with each valve controlled by a single stem member. So far as I am aware this feature is new whether the quick acting flush valve be employed in combination with the master valve, vor otherwise.
- a further feature of my invention resides in the fact that both the inlet'and exhaust valves of the master valve and the inlet and the exhaust portions of the'quick acting flush valve are selfvide means automatically operated by gravity and controlled by the pressing member actuatclosing so that in order to cause actuation of all of said valves simultaneously to actuate the fluid motor to bring the pressing members into pressing juxtaposition, or to evacuate said fluid motor to separate said pressing members, a single movement of the movable control member in a single direction only is necessary, in.
- the movable control member and the vari ious valves being self-movable to positions evacuating the fluid motor when the movable control member is no longer restrained or moved to a position actuating the fluid motor to bring said pressing members into pressing juxtapositions.
- a further feature of my invention relates to the fact that I employ a check valve in combination with the quick acting flush valve, inlet valve and bleeding trigger exhaust valve in the feed line whether or not said check valve, inlet valve and bleeding trigger exhaust valve are associated together in a master valve, preferably a check valve of a self-closing type so that in case a plurality of pressing machine units are operated from a single source of fluid pressure, each one may be operated independently without affecting the operation of the other, particularly in a manner to insure that the operation of one pressing machine in the series will not affect the safety features of the improved control means for the other pressing machines.
- a check valve it is obvious that the safety feature in each of the units will be maintained in the case of failure of the common source of fluid supply.
- a further feature of my invention is to provide a mechanism wherein each step changing the phase of operation of the device takes place with a sharp and positive actuation.
- I preferably provide the various types of check, inlet and exhaust valves employed with positive self-closing features so that the transition from open to closed position will take place rapidly.
- I preferably employ a gravity actuated latch which will tilt sharply into a latching position. It is obvious that the instant actuation of a gravity actuated latch is highly desirable in the event the addition of a timing mechanism to the pressing machine is desired.
- a further feature of my invention is that by the provision of such self-closing valves and a gravity actuated latch I am able to provide a mechanism which will function more quickly than prior art mechanisms which depended for their similar actuation on the relatively slow movement of the fluid in the cylinder.
- various parts of my invention being particularly constructed to cooperate with a linkage system for bringing the pressing members into pressing juxtaposition, including a link pivotable on one fulcrum to bring said members rapidly to a pressing position with relatively light pressure and pivotable after a predetermined amount of its movement on a different fulcrum to automatically apply a greater predetermined ironing pressure to said pressing members.
- a further feature of my invention is to provide a latch which will bejam-proof without danger of breaking the various parts thereof.
- Fig. l is a diagrammatic view with the various valve portions or means to control the fluid motor in a static position maintaining the pressing members in open position and illustrating a side elevation of a garment pressing machine showing the feed line at right angles thereto with the quick acting flush valve and master valve including the control member thereof in section and the actuating handles therefor in elevation at right angles to said control member, the parts being so distorted as to illustrate diagrammatically the operation of the device.
- Fig. 2 is .a view similar to Fig. 1 after both of the handles have been jointly actuated to move the control member into a position actuating the fluid motor to bring the pressing members into pressing juxtaposition.
- Fig. 3 is a, view similar to Fig. 1 after the latch means has functioned to latch the parts in the position shown in Fig. 2, to permit further actuation of the fluidmotor to apply the ironing pressure and the release of the handles if desired during the application of the ironing pressure.
- Fig, 4 is a view similar to Fig. 1 illustrating, in dotted lines, the actuation of a single handle to release the control member from the latch to permit the quick acting flush valve to quickly evacuate the fluid motor to separate the pressing members.
- Fig. 5 is a cross sectional view taken along the line 5-5 of Fig. 2.
- Fig. 6 is a cross sectional view taken along the line 66 of Fig. 2.
- Fig 7 is a cross sectional view taken along the line 'l'! of Fig. 3.
- Fig. 8 is a cross sectional view taken along the line 8-8 of Fig. 3.
- Fig. 9 is an end elevation of the front portion of the end of the pressing machine with the parts in the position shown in Fig. 1, particularly illustrating the handles, the master valve and the specific means .for controlling the operation of said master valve through manipulation of said handles.
- Fig. 10 is a front elevation of the parts of the pressing machine shown in Fig, 9.
- Fig. 11 is a diagrammatic view illustrating the master valve in side elevation and in perspective an alternative type of handles and means actuated thereby for controlling the actuation of the master valve specifically including an axially movable wire encased in a flexible cable for purposes of remote control.
- Suitable means are provided for moving the movable pressing head 24 into pressing juxtaposition with the buck 22, including a fluid motor 38 and means controlled by the fluid motor 38 for moving said lever 32 for this purpose, in the preferred embodiment shown, comprising the specially constructed linkage 40.
- Means are provided for controlling the flow of fluid to said fluid motor 38, including a feed line 42 for said fluid motor, an inlet valve 44 in said feed line and an exhaust valve 46 in said feed line and means to effect opening of said inlet valve 44 and closing of said exhaust valve 46 substantially simultaneously to actuate said fluid motor 38 to pivot said pressing head 24 into pressing juxtaposition over the buck 22 and alternatively to close said inlet valve 44 and open said exhaust valve 46 substantially simultaneously to evacuate said fluid motor 38 to permit said weight arm 36 to pivot said pressing head 24 away from said buck.
- the exhaust valve 46 becomes a trigger exhaust valve to cause a drop of pressure in said feed line 42 beyond said trigger exhaust valve 46 to cause the actuation of the flush valve 48 in the automatic manner to be explained.
- the quick acting flush valve 48 may be dispensed with, but if it be employed, a trigger exhaust valve 46 in the feed line is necessary to initiate the actuation of the quick acting flush valve 48 in the manner to be explained.
- Wher a plurality of press- 44 is of a self-closing type
- the check valve 50 is of a self-closing type
- the bleeding trigger exhaust valve 46 is of a self-closing type with the self-closing check valve 50, the self-closing inlet valve 44 and the self-closing bleeding trigger exhaust valve 46 being so arranged in the master valve 52 that a single movement of the control member 54 inone direction is all that is necessary allowing line pressure to respectively open the inlet valve 44, open the check valve 50 and permit self-closing of the trigger exhaust valve 46,
- the stem member 54 being normally spring urged to a position opening the exhaust valve 46 and permitting self-closing of said inlet valve 44 and check valve 50.
- the master valve 52 is thus so constructed that a single movement of the stem member 54 away from its self-closing position will function to allow line pressure to open the inlet valve 44, open the check valve 56 and permit self-closing of the bleeding trigger exhaust ing units 20 are actuated by a single source of fluid supply, I also preferably employ in the feed line 42, a check valve to prevent actuation of one unit from affecting the actuation of the other pressing units 20 in the system. While I have shown my invention applied to a garment pressing machine, it may be employed in any type of a pressing machine, such as a metal stamping machine, or a plastic molding machine and insofar as the controlling features of my invention,
- control a fluid motor 38 to actuate any type of a movable member, whether it be the pressing head 24, or any other movable member in an entirely different type of machine.
- a further feature of my invention which is particularly desirable in pressing machines, is that of locating the loleeding trigger exhaust valve 46, the inlet valve 44, and the check valve 50, where employed, in a master control valve 52, the
- the quick acting flush valve 48 is automatically self-opening when a drop in pressure occurs in the feed line 42 due to opening of the bleeding trigger exhaust valve 46.
- the master valve is substantially leak-proof for the selfclosing of the exhaust valve 46 takes place just prior to the actual opening of the inlet valve 44 and the self-closing of the inlet valve 44 takes place just prior to the opening of the exhaustvalve 46.
- said valve is provided with a chamber 56, and the feed line 42 includes an inlet line 58 connecting said chamber56 with the source of fluid pressure supply and an outlet line 60 connecting said chamber 56 with the fluid motor 38, or with the quick acting :flush valve 48 where employed.
- the inlet valve is provided at the inlet port of said chamber 56, the bleeding trigger exhaust valve 46 is alsomrovided in said chamber 56 and the control member 54 also is movable from a closed position in said chamber 56 free of'said inlet valve 44 and retaining said exhaust valve 46 in open position to an open position opening said inlet valve 44 and permitting closing of said exhaust valve 46.
- Means such as the operating lever or control member 62 operable from without said master control valve is provided to move saidv stem member 54 to said open position and spring means 6 is provided to normally urge said stem member 54 to a self- :closing position when said operating lever 62 is free.
- the inlet and check valves 44 and 50 are of a self-closing ty e
- the bleeding trigger exhaust valve 46 is also of a self-closing type andv ing it and said stem member 54 in closed position, moving said stem member 54 to a position opening said inlet valve 44 and permitting selfclosing of said exhaust valve 46 and that the means normally urging said stem member to a closed position will automatically function when pressure is removed from said operating lever or control member 62 to move said operating lever I and stem member back' to a closed position opening the exhaust valve 46 and permitting selfber 54.
- the inlet valve closing of said inlet and check valves 44 and 50 are of a self-closing ty e
- the bleeding trigger exhaust valve 46 is also of a self-closing type andv ing it and said stem member 54 in closed position, moving said stem member 54 to a position opening said inlet valve 44 and permitting selfclosing of said exhaust valve 46 and that the means normally urging said stem member to a closed position will automatically function when pressure is removed
- my preferred type of master control valve is preferably constructed as follows: Said valve includes a casing 64 (Fig. 1) having a chamber 56 divided into an inlet chamber 66 and an exhaust chamber 68. Said inlet chamber 66 has an inlet port I connected by the pipe 58 to the source of fluid pressure supply and a check valve seat I2 surrounding said inlet port I0. The exhaust chamber 68 is connected to said fluid motor 38, or to said quick acting flush valve 48 by the pipe 60, as explained.
- the partition I4 extends between said inlet chamber 66 and said exhaust chamber 68 and is provided with suitable passage means I6 connecting said inlet and exhaust chambers 66 and 68.
- the exhaust chamber is provided with the exhaust valve branch "I8 and the operating lever branch 80 projecting radially therefrom, in the embodiment shown, being in diametric alignment.
- the inlet valve 44 comprises an inlet valve seat 82 preferably of frusto-conical shape in the lower end of said inlet chamber 66 around the upper end of said passage means I6.
- the check valve 50 includes a hollow cylindrical valve guide socket 84 having a side wall 86 slidably mounted in the cylindrical upper chamber 66 at a spaced distance from the wall 88 thereof by means of the annular flanges 90 rigidly mounted at spaceddistances on said chamber Wall and provided with the plurality of perforations 92 therein as shown in Fig. 5.
- Said valve guide socket 84 in the embodiment shown, is provided with a conical upper end 94 forming the check socket 84 is also provided with the open lower end 96 located immediately above said inlet valve seat 82.
- Spring means 98 comprising the helical spring 98 i 'contained within said socket 84.
- inlet valve 44 comprises a suitable valve, in the embodiment shown, a ball valve normally urged to a seated position on said inlet valve seat by said seating spring means.
- Said seating spring means 96 also functions to normally move said ocket 84 to seat its conical upper end 94, comprising the check valve 50 in a self-closing manner on'its check valve seat I2.
- saidpassage means I6 comprises a cylindrical bore I00 of substantial diameter at the upper end thereof and a plurality of passages I02 flaring radially outwardly and downwardly to discharge in the upper end of said lower exhaust chamber 68 (Fig. 6).
- An inlet valve stem 54 is provided for vertical reciprocation within said exhaust chamber 56.
- Said valve stem 54 has an upper end I04 adapted to about said ball inlet valve 44 to raise it aga nst the pressure of the spring 98 to unseat said ball inlet valve 44 to open said inlet valve.
- Said valve stem 64 is provided at a point intermediate the ends thereof with the flange means I 06 projecting radially therefrom, in the preferred embodiment comprising a disk I06.
- the valve stem 54 is reciprocatably mounted in said exhaust chamber 68 with the upper end .I04extending through said passage bore I00 and into said inlet valve chamber 66 to unseat said ball inlet valve 44.
- Means are provided to vertically align said valve stem for vertical reciprocation within said exhaust chamber 68 and passage means E6, in the preferred embodiment, said. .means comprising a hollow stud I08 having a central bore H0 discharging into said passage bore I00 for containing the upper end of said valve stem 54 and projecting vertically downwardly from the upper end of said exhaust chamber 56 between the lower ends of said radial passages I02.
- Said aligning means also includes, in the embodiment shown, a hollow stud I I2 projecting externally downwardly from said casing 64 having a bore II4 to receive the lower end of said stem 54.
- a helical spring I I6 is provided in said lower exhaust chamber 68 abutting said disk I06 or flange means and the upper wall of said lower chamber between said radial passages I02 to normally urge said valve stem member 54 to closed position free of said inlet valve 44 to permit the normal self-closing or seating of said inlet valve 44 and said check valve 50 by said expansion seating spring means 98.
- a self-seating exhaust valve 46 is provided in the exhaust valve branch 18 of said exhaust chamber 68.
- Said exhaust valve 46 includes a peripheral shoulder II8 projecting radially inwardly in the inner end of said exhaust branch I8 and an exhaust port I20 in the outer end of said exhaust branch I8 having an exhaust valve seat I22 at the inner end thereof, in the embodiment shown of frusto-conical shape.
- the exhaust valve proper 46 has a surface I24 seatable on said exhaust valve seat, in the preferred embodiment, comprising a partially spherical surface I24 to cooperate with said frusto-conical valve seat I22.
- the exhaust valve 46 has an annular disk I26 perforated as at I21 projecting radially outwardly therefrom as shown in Fig.
- An exhaust valve stem I32 projects inwardly from said valve 46 terminating in an inner end I34 preferably spherically enlarged, as shown, contacting the disk I06 of said inlet valve stem 54.
- Spring means such as the helical spring I36 is provided in said exhaust branch 18- surrounding said valve stem I32 and having an inner end abutting said peripheral shoulder II8 and an outer end abutting said perforated exhaust valve disk I26 to normally urge said exhaust valve 46 to a seated position on its valve seat I22 with the peripheral flange I30 abutting the outer end of said exhaust branch 18 exterior of said exhaust port I20 when the enlarged inner rod end I34 is free of said inlet valve stem disk I06.
- Said master valve also includes an operating lever or control member 62 nonleakably universally pivotally mounted in the end wall I40 of said operating lever branch 80 having an inner end I38, preferably spherically enlarged, as shown, underlying said inlet valve stem disk I06.
- a port I42 is provided in the end wall I40 of said-outlet branch having an outwardly diverging wall I44 and a partially spherical socket I46 in the inner end thereof.
- the outwardly diverging portion I44 comprises a separate extension from the outer wall I40 of said operating lever branch 80.
- the control lever 62 has a spherical pivot enlargement I48 centrally thereof seated in said partially spherical socket I46 for universal movement of said control lever therein.
- the enlarged spherical inner end I38 of said control lever 62 contacts said valve stem disk I06.
- the outer end I50 of said operating lever or control member thus projects outwardly through and beyond the outwardly diverging internal wall I44 of said outlet port I42 or extension I52, through and beyond the end of said port or extension I52 abutting the wall of said port or extension to limit the umversal movement oi the outer end I88 of said operating lever or control member 82.
- a sealing spring washer I64 having a central hole I68 adapted to overlie the inner endof the spherical enlargement I48 to normally urge it outwardly to continuously abut and cover the inner surface of said spherical lever pivot portion I48 to positively prevent leakage of air through said port I42 into said operating lever branch 88.
- Any suitable type. of means may be provided to operate said master control valve by the depression of the outer end I58 of said operating lever or control member 62.-
- the exhaust valve branch 18 exterior of said exhaust port I28 may be provided with suitable sound deadening means I68, such as felt, or otherwise, to muille the changes in the flow of air-through said valve.
- I preferably employ a quick acting flush valve 48 interposed in said feed line 42 beyond said trigger exhaust valve 46.
- Said flush valve includes a chamber I68 having an in let port I 62, an outlet port I64 and an exhaust port I66, an exhaust valve I 68 to close said exhaust port I66 normally urged to an open position, an inlet valve I18 connected to said exhaust valve controlled by a drop of pressure from said inlet port I62 caused by bleeding of said trigger that.
- I also provide a combination check and differential valve I12 in said inlet chamber I16 preferably of flat annular formation and of a size to seal said vent means I86 in said inlet valve I18.
- I also provide spring means I98 in said chamber I68 abutting said check valve I12 of a strength to normally urge said check valve I12 to a position sealing said inlet vents I86, namely, with said check valve I12 covering and closing said vent means I86, said spring means I98 being yieldable, however, to permit sustained pressure in said line to raise said check and differential valve I12 against the pressure of said spring I88 to permit fluid to flow through said vent means I I86 around said spring I98 in said inlet chamexhaust valve 46 to permit back pressure from said fluid motor 38 to rapidly close said inlet port I62 and open said connected exhaust valve I 66 and a self-closing combination check and differential valve I12 in front of said exhaust valve I68 and in rear of said inlet valve I18 to prevent back pressure in said line 42 and effective on sustained pressure in said line to admit fluid pressure through to said fluid motor 88.
- said quick acting flush valve is preferably constructedas follows:
- the chamber I68 is divided into an upper exhaust portion I14 and a lower inlet portion I16 connected by the passage means I18.
- the inlet chamber I16 has the inlet port I62 in the lower wall thereof connected to the exhaust chamber 68 of said master valve by the pipe portion 68 of said feed line 42.
- the exhaust portion I14 has the outlet port I64 therein and the exhaust port I66 therein in vertical alignment with the inlet port I62 in said inlet chamber I16.
- the exhaust port I64 is connected to said fluid motor 38 by the pipe I88 forming part of the inlet or feed line 42.
- the exhaust port I66 is provided with ,the exhaust valve seat 182, preferably of partially spherical shape extending around said exhaust port.
- valve stem I84 is mounted for vertical reciprocation within said chamber I68 and projects vertically upwardly through said inlet chamber l16, said pa'ssagemeans I18 and said exhaust chamber I14.
- Said valve stem I84 is provided with the inlet valve I18 on the lower end thereof adjacent said inlet port I62 comprising in the preferred embodiment shown, a disk valve I18 of substantially the circular or other area of said inlet chamber I 16 adjacent said inlet port I62 having a plurality of vents I86 therein exterior of said inlet port I62 preferably arranged in annular formation exteriorvof said inlet port I62 as shown in Fig. 8 providing a solid .central portion I88 for sealing said inlet port.
- the exhaust valve I68 is mounted on the opposite end of said stem I 84 in said exhaust chamber I14 and preferably comprises a spherical valve I68 adapted to seat in said partially spherical valve seat I 62 sur-- rounding said exhaust port I66. It is apparent 7 ber I16 through said passage means I18 and out through said outlet port I 64 and through said pipe I88 to actuate said fluid motor 38. Exhausting of pressure in said feed line 42 due to opening of said bleeding trigger exhaust valve 46 will inevitably permit lowering of said inlet valve I 18, valve stem I 84 and connected exhaust valve I 68 to permit rapid evacuation of fluid from said fluid motor 38 through said pipe I 88, outlet port I62, exhaust chamber I14 and exhaust port I 68. In the embodiment shown the other end of the spring abuts the lower surface of the ball exhaust valve I68. If desired, the entire flushvalve may be inverted.
- my invention also includes safety means, including a pair of handles I92 for actuating the fluid or other motor employed to bring the pressin members 22 and 24 into pressing juxtaposition.
- safety means including a pair of handles I92 for actuating the fluid or other motor employed to bring the pressin members 22 and 24 into pressing juxtaposition.
- the handles I92 are only effective on a single movement thereof in a single direction to affect the controlling means for the fiuid motor and that they are operableto actuate the controlling means for the motor to bring said members 22 and-24 in pressing juxtaposition only whenflboth of said handles I 92 are moved-together, movement-of one of said handles I92--- only being operable to a'ilectsaid controlling means to separate said ressing members.
- both'of thev operator's hands are employed on the respective handles I92 to cause such movement and that if anything should happen causing the removal of a hand from one of thehan'dles, the device will automatically function to positivelyeffect relative opening movement of said p ns'f members.
- a further desirable feature of my preferred embodiment therefore is that each of the actuating means is moved in the same direction to release to safety position as to move the device to a pressing position, both of the handles, however, being required to efi'ect movement of the machine to a pressing position.
- any type of motor may be employed to move the members 22 and 24 to and from pressing positions.
- I preferably employ the fluid motor 38'for this purpose.
- I have found that an ideal place for the mounting of the handles is below the front end of said table where they will not catch upon the clothes or other material being operatedon.
- the respective handles I92 are preferably provided of a relatively large area so that they may be accessible from various points along the front of the machine.
- guard means such as the flange I94 (see Fig. 9) projecting integrally downwardly from the front end of the table 26 may be provided to further protect the handles.
- Any suitable type of handles may be employed, such as the operating buttons I92 shown in Fig. 11, each of which actuates an axially slidable wire I96 encased in a suitable protective armored cylindrical flexible casing I98.
- the type of handles or buttons shown in Fig. 11 are particularly desirable when remote control over a machine at a distance is desired, or a plurality of machines assembled to operate as a unit are employed.
- one feature of my invention consists in the fact that movement of both handles in a single direction is required to actuate the controlling means to bring the pressing members into pressing juxtaposition and while movement of one handle only is preferably employed to release said members from pressing juxtaposition, other tyes of means to release 'said members or to evacuate the fluid motor for this purpose, such as shown in my copending application for patent on Control means a for pressing machines, Ser. No. 376,286, filed January 28, 1941, maybe employed.
- both the fluid flow controlling means and the handle means for controlling the movement of the movement control member 54 are particularly designed to cooperate with each other for use in a garment pressing machine and hence, in the preferred embodiment shown, the respective handles I92 are designed and constructed to actuate the movable stem member 54 of the master valve 52 through the medium of the operating lever or control member 62.
- the respective inlet valve 44, check valve 50 and trigger exhaust valve 46 are preferably self-closing in the manner previously described, so that when both handles I92 are not actuated, the operating lever 62 will be immediately released to a safety position closing the inlet valve 44 and opening controlled by the actuating means for bringing the pressing members 22 and 24 into pressing juxtaposition; substantially when said pressing members 22 and 24 have been brought into pressing juxtaposition, to permit said controllin means to continue to function to permit actuation of said fluid motor to apply ironing or other pressure without further actuation of said respective handles I92, freeing the hands for other uses on other machines, if desired, while the ironing pressure is being applied.
- Any means may be provided to release the movable control member 62 to free it from said latch 200 to exhaust the fluid motor 38 to separate said pressing members.
- means may be provided to bring said members 22 and 24 to a pressing position with relatively light pressure and to automatically apply a greater predetermined ironing pressure to said pressing members after they have been brought into pressing juxtaposition.
- My invention is particularly applicable to a pressing machine employing this greater ironing pressure, for not only, are both hands kept occupied during the dangerous period of bringing the members into pressing juxtaposition, but also said members are brought together with relatively light pressure during this dangerous period.
- I preferably employ a modification of the linkage system shown in Patent No. 1,897,689 for Actuating mechanism for garment pressing machines and Patent No.
- Means are provided actuated by said linkage to move the latch 200 to a position overlying the outer end I of the operating lever or control member 62 substantially at the instant the pressing members 22 and 24 are brought into pressing position and the fulcrum of the link 202 has changed from 204 to 206 ceasing the application of relatively light pressure to said pressing members 22 and 24 through the fulcrum 204 and initiating the period of heavy ironing pressure to said pressing members through the fulcrum 206.
- means are provided to depress the outer end I50 of said operating lever or control member 62 to raise said inlet valve stem member 54 through the medium of the disk I06 against the pressure of the spring I I6 to raise said inlet valve stem 54 to abut said inlet valve 44 to open the inlet valve to permit flow of fluid to the fluid motor 30 and to permit self-closing of said exhaust valve 46, to cause said fluid motor 38 and linkage 40 where employed, to relatively move said pressing members 22 and 24 to said closed pressing position.
- Said means includes a pair of cams 208 having upwardly tapered inner edges 2I0 forming, when in raised position, a crotch 2I2 between them in which the outer end I50 of the operating lever or control member 62 is adapted to liewith the overlapping inner cam ends normally overlying said outer end I50 when it is in its. raised position.
- Said cams are each mounted on respective arms 2 projecting forwardly from and pivotally mounted on the master control valve 52 as at 2I5.
- the pair of control handles I92 is provided, each extending underneath the front end of the table 26 and each connected to a pivotally mounted cam arm 2 in the manner diagrammatically shown in Figs. 1-4 by the link 2 I0, or specifically as shown in Figs. 9 and 10 by an arm 2I8, having the lower end thereof engaged within a suitable groove 2I8 in said cam arm 2.
- I also provide the latch means 200 effective to latch the outer end I50 of the operating lever 62 in a depress d open postion maintaining the inlet valve 44 open and the exhaust valve 46 closed to continue to apply fluid pressure to the fluid motor 38 as shown in Fig.3
- the link 200 is thus pivotal on the pivot 20I from a position free of the outer end I40 of said operating lever or control member '02 as shown in Fig. 1 to a position overlying said operating end as shown in Figs. 2 and 3 after said pressing members have been brought to a pressing position, in'the preferred embodiment shown, substantially when the link 202 has changed its fulcrum from 204 to i sure.
- the link 220 is provided with a boss 222 adapted to abut a pin 224 projecting laterally from the weight arm 226 of the latch 200.
- any means may be provided to re-, I
- I may provide a supplementalloot lever 228 to actuate a link 230 to raise the latch arm 226 to pivot the latch 200 free of the outer end I50 of said operating lever 52, such means being alternative or supplemental to the means previouslydescribed for unlatching the latch.
- the latch 200 is gravity actuated by the weight of the weight arm 220' thereof and that the link 220 abutting the pin 224 of said weight arm 226 prevents the latch fr'om be'ng moved into latching position until the pressing members 22 and 24" have substantially reached a closed pressing position when the link 2201 will have been lowered to theposition shown in Fig. 3.by the respective movements of the parts of the l nkage 40 caused by actuation of the fluid motor 38.
- any other type of latching means may be employed for this purpose, such as the type of means shown in my copending application, S. N. 376,286, filed January 28, 1941, for Control means for pressing machines, effective to release similar respective handles while the ironing pressure is being applied and in addition any suitable type of means to evacuate the fluid motor may be employed, such as the means shown in said application.
- latching means be controlled by the linkage as shown herein, or be controlled by the rising of the pivoted cylinder as shown in said application, by movement of the pressing head, by the flow of fluid, or otherwise. If desired, any suitable means and manually operated control therefor may be employed to evacuate the fluid motor other than the specific type shown.
- Fig. 12 a structure analogous to that shown in said copending application, wherein the cylinder 246 of the fluid motor 38 itself actuates the link 220 in place of having the movement thereof controlled by the motion transmitting mechanism or linkage 40.
- the link 220 is not pivoted on the same pivot as the latch 200, but is pivoted at the point 23I as a lever of the flrst class.
- the rear end of said link 220 is pivotally attached to a rod 233 having an elongated slot 235 at the lower end thereof receiving a pin 23! projecting laterally from said cylinder, the slot 235 being of such a length as to become operative to tilt the front end 239 of the link 220 downwardly when the cylinder 246 has been actuated substantially far enough to substantially close said pressing members 22 and 24.
- Fig. 11 a pair of an alternative type of handles I92, each effective to axially move a wire I96 encased in a flexible armored cable I98 to raise arespective rod 232 to abut a respective arm 234 projecting rearwardly from a cam arm 2I4, to lower the respective cams 208 together when both of the respective buttons or handles 192' are depressed together to lower the outer end I50 of said operating lever or control outer end I50 of said operating lever 62 from the latch 200 to permit a quick evacuation of said fluid motor 38 for separation of said pressing members 22 and 24.
- each operating handle I92 comprises a socket I having a stem 236 projecting downwardly through a bore 238 therein connected to an end 240 of the axially movable wire I96, said button or handle I 92 being normally urged to a raised position by a spring 242 contained in said socket 24I underneath said button I92. While I have shown in Fig. '11 the operating buttons I92 and the cable encased axially movable wires I96 as an alternative construction to the handles I92 shown in Figs.
- Fluid flowing through the inlet port I62 of the flush valve 48 will then conjointly raise the inlet valve I10 and differential valve I12 and lift the connecting valve stem I84 and connected exhaust valve I68 to close the exhaust port I66. Sustained pressure through said inlet line will then raise thedifferential valve I12 free of the ducts I86 compressing the spring I90 for this purpose so as to permit flow of fluid through the flush valve 48 out the outlet port I64 thereof and pipe I to the fluid motor 38 pivotally mounted on the pivotpin 244 on the front end of the machine frame 28.
- the fluid motor 38 comprises the cylinder 246 pivotally mounted as at 244 on said frame and the piston head 248 axially movable in said cylinder to actuate the piston rod III connected to the linkage II.
- valve stem member II As the valve stem member II is urged downwards, it is apparent that the disk III thereof will abut the exhaust valve stem III to tilt the exhaust valve II to the open position shown and that the stern member II will belowered free of the inlet valve II so that the spring II will immediately function to close the inlet volve II and substantially simultaneously close the check valve II.
- a fluid motor for bringing said members into pressing juxtaposition
- means for controlling the flow of fluid to said fluid motor I including a universally mounted control member normally urged to a position exhausting said fluid motor movable to a position permitting flow to said fluid motor, a pair of manually operable means, means actuated by each of said manu-, ally operable means to apply an oblique force in a forward direction to said universally mounted control member, obliquely opposite to the force I applied by said other means, adapted, when both manually operable means are actuated together to move said universally mounted controlmember forwardly to actuate said controlling means to permit flow to said motor; and
- a motor for bringing said members into pressing juxtaposition means for controlling said motor including a universally mounted control member normally urged to a position shutting off said motor movable to a position actuating said motor, a pair of manually operable means, means actuated by each ofsaid manually operablemeans to apply an oblique force in a forward direction to said universally mounted control member, obliquely opposite to the force applied by said other means, adapted, when both manually operable means are actuated together to move said universally mounted control member forwardly to actuate said motor; and when one of said manually operable means only is actuated, to move said universally mounted control member obliquely to permit return of saidcontrolling means to a position shutting oil said motor, to separate said pressing members.
- a pressing machine having a table, guard means projecting downwardly from the table, relativelymovable pressing-members, a motor for bringing said members into pressing juxtaposition, means for controlling said motor including a universally mounted control member normally urged to a position shutting off said motor movable to a position actuating said motor, a pair of manually operable means mounted and operative from below the front end of said table behind said guard means, means actuated by each of said manually operable'means to apply an oblique force in a forward direction to said universally mounted controi'iriember, obliquely opposite to the force aPl lied by said other means, adapted,
- pressing members actuating means to relatively move said pressing members to a pressing position and thereafter apply pressure
- a fluid motor means for controlling the flow of fluid to said fluid motor including a universally mounted control member normally urged to a position exhausting said fluid motor, movable to a position to actuate said controlling means to permit flow to said .fluid motor, a pair of menually operable means, means actuated by each of said manually operable means to apply an oblique force in a forward direction to said uniposite to the force applied by said other means,
- actuating means to relatively move said pressing members to a pressing position and thereafter apply pressure, including a fluid motor, means for controlling the flow of fluid to said fluid motor including a universally mounted control member normally urged to a position exhausting said fluid motor movable to a position to actuate said controlling means to permit flow to said fluid motor, a pair of manually operable means, means actuated by each of said manually operable means to apply an oblique mounted control member, obliquely opposite to the force applied by said other means, adapted, when both manually operable means are actuated together to move said universally mounted control member forwardly to actuate said controlling means to permit flow to said motor; and when one of said manually operable means only is actuated, to move said universally mounted control tuating means to latch said movable control member in a,position actuating said fluid motor operative only on the joint release of said manually operable means after said pressing members have been brought into pressing juxtaposition on continued joint actuation of
- actuating means to relatively move said pressing members to a p e g position and thereafter apply pressure, including a fluid motor, means for controlling the flow of fluid to said fluid motor including a universally mounted control member normally urged to a position exhausting said fluid motor movable to a position .to actuate said controlling means to permitflow to said fluid motor, a pair of manually operable means, means actuated by each of said manually operable means to apply an oblique force in a forward direction to said universally mounted control member, obliquely opposite to the force applied by said other means, adapted, when both manually operable means are actuated together to move said universally mounted control member forwardly to actuate said controlling means to permit flow to said motor; and when one of said manually operable means only is actuated, to move said universally mounted control member obliquely to permit return of said controlling means toa position exhausting said fluid motor, to separate said pressing members, and latch means automatically moved by said actuating
- actuating means to relatively move said pressing members to a pressing position and thereafter apply an ironing pressure including a fluid motor, and means for controlling the flow of'fluid to said fluid motor including a universally mounted control member normally urged to a position exhausting said fluid motor movable to a position to actuate said controlling means to permit flow to said fluid motor, a pair of manually operable means, means actuated by each of said manually operable means to apply an oblique force in a forward direction to said universally mounted control member, obliquely opposite to the force applied by said other means, adapted, when both manually operable means are actuated together to move said universally mounted control member forwardly to actuate said controlling means to permit flow to said motor; and
- actuating means torelativeiy move said pressingmembers to a pressing' position and thereafter, apply an ironing pressure, includingfa fluid motor, means for controlling the flowof fluid to said fluid motor, including a movable control member normally urged to a position exhausting said fluid motor and manually actuated means for moving said moyable control member to a position to admit fluid to said fluid motor to relatively move said pressing members to pressing juxtaposition and apply pressure on a single movement of said manually actuated means, and gravity actuated latch mean automatically controlled by said actuating 1 ed man an I otally mountedon the front'ofes'aid pressinsrmachine frame, a pairof control handles extending assesso means to become .efl'ective-tomove into a position permittinglatcbing ofsaidmovitblecontrolmemher in said actuating 'positiononly on release :of saidmanually actuated means after said pressing 1 members have been broughtinto
- fluid tosaid fluid motor including a movablecontrolmemb'er normally-urged to a raisedxaposition exhausting-said fluid motor and means to .movesaid movable control member to supply, :fluid:to
- said fluid motorto causesaidfluid motorzand actuating means to relatively move'saidpressing members to pressing position and .toretain :said: members in-said presslns position during the application of said ironing pressure.
- a latch pivotally mountedvonssidzframerweighted to pivot-by gravityto an operative positionoverlying a portion .of said movable control member when in actuating position, a pair of cams having downwardly tapering inner edges having overlappinginner ends normally overlying said portion of said control member when in a raised position exhausting said fluid motoneach mountprojecting. forwardly from andpivunderneath the front end of said table.
- 11.111 a garment pressing machine, aframe, relatively my; ble pressing members, actuating means-to relatively move said members toa pressing positions and thereafter apply an ironingipressure .includins a fluid motor, means for controlling flow of fluid to said fluid motor including a movable control mfln r normally urged to a position exhausting said fluid motor and.- means; to move said movable control memher to supply fluid tosaid-fluid' motor to cause said fluid moto andactuating mean to'relativethereof to a position permitting said' pressing members to pivot to open ly pivoting said latch to aposition free of the position 1 discharging 5 said fluid from said fluid motor, means normalpivotal movement of said portion of said control member actuated by said actuating means when said pressing members approach their pressing position to free said latch for .the gravity actuated pivotal movement thereof to a position overlying the loweimostposltiongoi' said portion of said controlmember and toabut said portion on Joint release of said
- a frame a table mounted on said frame, relatively movable said. fluid from said fluidlmopressing members, actuating means torelatively move said members to .apressing position and thereafter apply anironingpressure including a fluid. motor, means for controllingthe'flowof fluid means to knock said portion of said control member lateraliy free of said latch when in 65 position permitting said pressing members to 1! move said ress ns members to-pressingposition and ioretain saidmembersin said pressings positionduring the application of said ironing pressure.
- a latch pivotally mounted onsaid frame wellhted to pivot .by gravityato :an
- control'member and to :abut-slid portion on releaseaof said manually operated meanstoretainsaidmembers in pressingposition during the application of ironing pressure, while permitting release of said ,manually operated means
- means for controlling the flow of :75 fluid to said fluid motor including ,amovable conmit flow to said fluid motor, a
- trol member normally urged to a raised position exhausting said fluid motor and means to move I said movable control member to supply fluid to said fluid motor to cause said fluid motor and actuating means to relatively move said pressing able wires connecting said buttons and cams to selectively move said cams so that when both buttons are trol member in the crotch between them to cause flow of fluid to said fluid motor to relatively move said pressing members to closed position and when either button is depressed alone the cam actuated therebymay function to knock the outer end of said control member laterally to effect movement thereof to a position permitting said pressingmembers to pivot to open position discharging said fluid from said fluid motor.
- relatively movable pressing members actuating means to: relatively move said pressing members to a pressing position and thereafter apply pressure, including a fluid motor, means for controlling the flow of fluid to said fluid motor including a universally mounted control member normally urged to a position exhausting said fluid motor movable to a position to actuate said controlling means to permit flow to said fluid motor, a pair of manually operable means, means actuated by each of said manually operable means to apply an oblique force in a; forward direction to said universally mounted control member, obliquely opposite to the forceapplied by said other means, adapted, when both, manually operable means are actuated together to move said universally mounted control member forwardly to actuate said controlling means to permit flow to said motor; and when one of said manually operable means only is actuated, to move said universally mounted control member obliquely to permit return of, said controlling means to a position exhausting said fluid motor, to separate said pressing members and latch means automatically operative to latch said movable
- actuating means to relatively move said pressing-members to a pressing posi tion and thereafter apply pressure
- a fluid motor means for controlling the flow of fluid to said fluid motor including a universally mounted control member normally urged to a position exhausting said fluid motor movable to a position to actuate said controlling means to perpair of manually operable means, means actuated by each of said manually operable means to apply an oblique force in a forward direction to saiduniversally mounted control member, obliquely opposite to depressed
- said cams may be con jointly lowered to depress said portion of the consaid movable control member in a position actuating said fluid motor operative only .on the joint release of said manually operable means after said pressing members have .been brought into pressing juxtaposition on continued joint actuation of both said manually operable means to thereafter permit release of said manually operable means while said movable control member continues to'function to permit further actuation of said fluid motor to apply said pressure
- relatively movable pressing members actuating means to relatively move said pressing members to a pressa ing position and thereafter apply an ironing pressure
- actuating means to relatively move said pressing members to a pressa ing position and thereafter apply an ironing pressure
- a fluid motor means for controlling the flow of fluid to said fluid motor, including a movable control member and manually actuated means for moving said movable control member to aposition to admit fluid to said fluid motor to relatively move said pressing members to pressing juxtaposition and apply pressure on a. single movement of said manually actuated means, and latch means automatically operative to latch said movable control member in said position only after said pressing members have been brought into pressing juxtaposition to permit release of said manually actuated means while said controlling means continues to function to permit further actuation of said fluid motor to apply said ironing pressure.
- a frame, a table mounted on said frame, relatively movable pressing members, actuating means to relatively move said members to a pressing position and thereafter apply an ironingpressure including a fluid motor, means for controlling the flow of fluid to said fluid motor including a movable control member normally urged to a raised position exhausting said fluid motor and means to move said movable control member to supply fluid to said fluid motor to cause said fluid motor and actuating means to relatively move said pressing members to pressing position, comprising a pair of cams having downwardly tapering inner edges having overlapping inner ends normally overlying a portion of said control member when in a raised position, each mounted on an arm projecting the front of said pressing machine frame, a pair of control handles extending underneath the front end of said table pivotally mounted on said machine frame and each connected to a pivotally mounted cam arm so that when both handles are raised said cams may be conjointly lowered to depress said portion of the control member in the crotch between them to cause flow of fluid to said fluid motor to relatively
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Description
Aug. 14, 1945'. F. c. LORNITZO 2 SAFETY CONTROL FOR PRESSING MACHINES Filed Oct. 28, 1940 s Sheets-Sheet 1 o o o a! do x FRANK c. LORNITZO I NVENTOR Byway/W 2 AT TORNE Y Aug. 14, 1945.
F. C. LORNITZO SAFETY CONTROL FOR PRESSING MACHINES Filed Oct. 28, 1940 8 Sheets-Sheet 2 I FRANK C. LORN/ TZO INVENTO'R BY 773W 60 M ATTORNEY Au'g- 4, 1945. F. c. LoRNrrzo SAFETY CONTROL FOR PRESSING MACHINES Filed Oct. 28, 1940 8 Sheets-Sheet 5 FRANK c. LORN/TZO INVENTOR ATTORNEY FRANK C. LORN/T'ZO INVENTOR m a zww ATTORNEY Aug. 14, 1945. F. c. LORNITZO SAFETY CONTROL FOR PRESSING MACHINES Aug. 14, 1945. 1 F. c. LORNITZO 2,382,322
SAFETY CONTROL FOR PRESSING MACHINES FQc. 'LORNITZQ I 2,382,322 SAFETY coNTRopFoR" PRESSING MACHINES Aug. 14,. 1945;
8 SheetsShet 6 Filed Oct. 28, 1940 FRANK c. LOR NITZO INVENTQR' ATTORNEY Aug.- 14, 1945. F. c. LORNIT Z O SAFETY CONTROL'FOR PRESSING MACHINES Filed Oct. 28, 1940 8 Sheets-Sheet 7 FRANK C. LORN/TZO INVENTOR BY m QM ATTORNEY Aug. 14, 1945. F. c. LORNITZO SAFETY CONTROL FOR PRESSING MACHINES Q FRANK o. LORNITZO INVENTOR M ATTORNEY.
Patented Aug.. 14, 1945 SAFETY C(SNTROL FOR PRESSING MACHINES Frank C. Lornitzo, Pawtucket, R. L, assignor to Pantex Pressing Machine, Inc., Central Falls, R. I., a corporation of Delaware Application October 28, 1940, Serial No. 364,287
26 Claims.
My invention relates to improvements in safety controls for pressing machines, preferably to pressing machines adapted for use in pressing ;,garments and having fluid pressure actuated op- ,erating means.
ing juxtaposition and in which a separate handle is provided for each hand movable for actuating purposes in a single direction only and preferably also so constructed that in case one of the hands should slip oil, movement of one handle alone will automatically cause the device to separate the pressing members so that there is no possibility of accident to the other hand. In my preferred embodiment each handle is actuated in the same direction to close the pressing machine, the actuation of one handle only in the same direction being operable to open the pressing machine to separate the pressing members so that there can be no possibility of accident.
A further object of my invention is to further insure the safety of the operators hands by providing a latch which will not only not latch to keep both hands occupied until both manual means are each moved to an actuating position, but also one which will not take effect until they are then conjointly released, thereby keeping the operators hands occupied until a definite mental step is necessary to effect the actuation of the latch.
As an additional safety feature, the pressing machine is preferably so constructed as to employ only a relatively light pressure while bringing the members into pressing juxtaposition, which pressure immediately changes to a relatively higher ironing pressure after there is no danger of the hands being caughtbetween the pressing members. i A further feature of my invention is to proing means when said pressing members are brought into pressing juxtaposition to permit release of the handles at substantially the instant when the device changes from the application of a light to heavy ironing pressure, thereby freeing the operator's hands for other uses during the application of the heavy ironingpressure.
A further feature of my invention is to provide the handles in a hidden and yet accessible place where they will not catch on the clothes being pressed and for this purpose I preferably locate them immediately underneath the front end of the usual table and provide guard means, such as a downturned flange at the front of the table to protect the handles.
Further features of my invention relate to improvements in the control means for controlling the flow of fluid to the fluid motor for bringing the pressing members into pressing juxtaposition.
One specific feature of the control means is that I employ a quick acting flush valve to rapidly exhaust the fluid motor to separate the pressing members, located in the feed line to the fluid motor, preferably immediately adjacent the fluid motor. To actuate said quick acting flush valve to quickly evacuate the fluid motor, I also provide a bleeding trigger exhaust valve in said feed line and an inlet valve in said feed line and suitable means to effect opening of said inlet;
valve and closing of said trigger exhaust valve substantially simultaneously toactuate the-fluid motor and closing of said inlet valve and opening of said trigger exhaust valve substantially simultaneously, the trigger exhaust valve functioning to release the quick acting flush valve in the same feed line to immediately evacuate the motor. If the quick acting flush valve be not employed, or should fail in use, it is obvious that the exhaust valve itself may evacuate the fluid motor in a slower manner.
A further object of my invention is to simplify the control means for the fluid motor by employing the inlet valve and thebleeding trigger exhaust valve in a single master valve with each valve controlled by a single stem member. So far as I am aware this feature is new whether the quick acting flush valve be employed in combination with the master valve, vor otherwise.
A further feature of my invention resides in the fact that both the inlet'and exhaust valves of the master valve and the inlet and the exhaust portions of the'quick acting flush valve are selfvide means automatically operated by gravity and controlled by the pressing member actuatclosing so that in order to cause actuation of all of said valves simultaneously to actuate the fluid motor to bring the pressing members into pressing juxtaposition, or to evacuate said fluid motor to separate said pressing members, a single movement of the movable control member in a single direction only is necessary, in. the embodiment shown, the movable control member and the vari ious valves being self-movable to positions evacuating the fluid motor when the movable control member is no longer restrained or moved to a position actuating the fluid motor to bring said pressing members into pressing juxtapositions.
Due to the aforedescribed construction employing the quick acting flush valve, it is obvious that I am able to provide a preferably two-hand, manual control for the master valve, which same twohand control functions. as a remote control through the medium of the flow of fluid through the feed line for the quick acting flush valve and it is thus apparent that I have provided a single manual control for actuating all of the valves employed in the system.
A further feature of my invention relates to the fact that I employ a check valve in combination with the quick acting flush valve, inlet valve and bleeding trigger exhaust valve in the feed line whether or not said check valve, inlet valve and bleeding trigger exhaust valve are associated together in a master valve, preferably a check valve of a self-closing type so that in case a plurality of pressing machine units are operated from a single source of fluid pressure, each one may be operated independently without affecting the operation of the other, particularly in a manner to insure that the operation of one pressing machine in the series will not affect the safety features of the improved control means for the other pressing machines. With the employment of a check valve it is obvious that the safety feature in each of the units will be maintained in the case of failure of the common source of fluid supply.
A further feature of my invention is to provide a mechanism wherein each step changing the phase of operation of the device takes place with a sharp and positive actuation. For this purpose I preferably provide the various types of check, inlet and exhaust valves employed with positive self-closing features so that the transition from open to closed position will take place rapidly. For the same reason I preferably employ a gravity actuated latch which will tilt sharply into a latching position. It is obvious that the instant actuation of a gravity actuated latch is highly desirable in the event the addition of a timing mechanism to the pressing machine is desired.
A further feature of my invention is that by the provision of such self-closing valves and a gravity actuated latch I am able to provide a mechanism which will function more quickly than prior art mechanisms which depended for their similar actuation on the relatively slow movement of the fluid in the cylinder.
Further features of my invention relate to improvements in the detailed construction of the handle operated actuating means, the specific construction of the quick acting flush valve, the
specific construction of the master valve and the. specific construction of the various parts of my invention to make them practical for use in a specific type of fluid motor actuating means for bringing the pressing members of a garment pressing machine into pressing juxtaposition and later applying a greater ironing pressure, the
various parts of my invention being particularly constructed to cooperate with a linkage system for bringing the pressing members into pressing juxtaposition, including a link pivotable on one fulcrum to bring said members rapidly to a pressing position with relatively light pressure and pivotable after a predetermined amount of its movement on a different fulcrum to automatically apply a greater predetermined ironing pressure to said pressing members.
A further feature of my invention is to provide a latch which will bejam-proof without danger of breaking the various parts thereof.
Further features of my invention relate to the specific construction of the various valves which make the feed line for the fluid motor substantially leak proof, particularly the specific construction of the leak-proof master valve.
These and such other objects of my invention as may hereinafter appear will be best understood from a description of the accompanying drawings which illustrate embodiments thereof applied to a garment pressing machine.
In the drawings,
Fig. l is a diagrammatic view with the various valve portions or means to control the fluid motor in a static position maintaining the pressing members in open position and illustrating a side elevation of a garment pressing machine showing the feed line at right angles thereto with the quick acting flush valve and master valve including the control member thereof in section and the actuating handles therefor in elevation at right angles to said control member, the parts being so distorted as to illustrate diagrammatically the operation of the device.
Fig. 2 is .a view similar to Fig. 1 after both of the handles have been jointly actuated to move the control member into a position actuating the fluid motor to bring the pressing members into pressing juxtaposition.
Fig. 3 is a, view similar to Fig. 1 after the latch means has functioned to latch the parts in the position shown in Fig. 2, to permit further actuation of the fluidmotor to apply the ironing pressure and the release of the handles if desired during the application of the ironing pressure.
Fig, 4 is a view similar to Fig. 1 illustrating, in dotted lines, the actuation of a single handle to release the control member from the latch to permit the quick acting flush valve to quickly evacuate the fluid motor to separate the pressing members.
Fig. 5 is a cross sectional view taken along the line 5-5 of Fig. 2.
Fig. 6 is a cross sectional view taken along the line 66 of Fig. 2.
Fig 7 is a cross sectional view taken along the line 'l'! of Fig. 3.
Fig. 8 is a cross sectional view taken along the line 8-8 of Fig. 3.
Fig. 9 is an end elevation of the front portion of the end of the pressing machine with the parts in the position shown in Fig. 1, particularly illustrating the handles, the master valve and the specific means .for controlling the operation of said master valve through manipulation of said handles.
Fig. 10 is a front elevation of the parts of the pressing machine shown in Fig, 9.
Fig. 11 is a diagrammatic view illustrating the master valve in side elevation and in perspective an alternative type of handles and means actuated thereby for controlling the actuation of the master valve specifically including an axially movable wire encased in a flexible cable for purposes of remote control.
jamming of the latch and consequent breaking of the parts in use.
In the drawings, wherein like characters of l reference generally indicate like parts throughmovable pressing members 22 and 24, in the embodiment shown, comprising the usual stationary buck 22 mounted-on the pressing. machine above the usual table 26 and the movable pressing head 24 pivotally mounted on the machine frame 28 as at 30, in the embodiment shown, being mounted on the end of the power arm 34 of a lever of the first class 32 having a weight arm 36 extending rearwardly therefrom, weighted to normally pivot the pressing head 24 to an open position.
Suitable means are provided for moving the movable pressing head 24 into pressing juxtaposition with the buck 22, including a fluid motor 38 and means controlled by the fluid motor 38 for moving said lever 32 for this purpose, in the preferred embodiment shown, comprising the specially constructed linkage 40. Means are provided for controlling the flow of fluid to said fluid motor 38, including a feed line 42 for said fluid motor, an inlet valve 44 in said feed line and an exhaust valve 46 in said feed line and means to effect opening of said inlet valve 44 and closing of said exhaust valve 46 substantially simultaneously to actuate said fluid motor 38 to pivot said pressing head 24 into pressing juxtaposition over the buck 22 and alternatively to close said inlet valve 44 and open said exhaust valve 46 substantially simultaneously to evacuate said fluid motor 38 to permit said weight arm 36 to pivot said pressing head 24 away from said buck. In order to quickly evacuate the fluid motor to'permit rapid movement of'the pressing head 24 away from the pressing buck 22 I also interpose in said feed line, preferably adjacent said fluid motor a quick acting flush valve 48 and where said quick acting flush valve is employed, the exhaust valve 46 becomes a trigger exhaust valve to cause a drop of pressure in said feed line 42 beyond said trigger exhaust valve 46 to cause the actuation of the flush valve 48 in the automatic manner to be explained. If desired, however, the quick acting flush valve 48 may be dispensed with, but if it be employed, a trigger exhaust valve 46 in the feed line is necessary to initiate the actuation of the quick acting flush valve 48 in the manner to be explained. Wher a plurality of press- 44 is of a self-closing type, the check valve 50 is of a self-closing type and the bleeding trigger exhaust valve 46 is of a self-closing type with the self-closing check valve 50, the self-closing inlet valve 44 and the self-closing bleeding trigger exhaust valve 46 being so arranged in the master valve 52 that a single movement of the control member 54 inone direction is all that is necessary allowing line pressure to respectively open the inlet valve 44, open the check valve 50 and permit self-closing of the trigger exhaust valve 46,
the stem member 54 being normally spring urged to a position opening the exhaust valve 46 and permitting self-closing of said inlet valve 44 and check valve 50. The master valve 52 is thus so constructed that a single movement of the stem member 54 away from its self-closing position will function to allow line pressure to open the inlet valve 44, open the check valve 56 and permit self-closing of the bleeding trigger exhaust ing units 20 are actuated by a single source of fluid supply, I also preferably employ in the feed line 42, a check valve to prevent actuation of one unit from affecting the actuation of the other pressing units 20 in the system. While I have shown my invention applied to a garment pressing machine, it may be employed in any type of a pressing machine, such as a metal stamping machine, or a plastic molding machine and insofar as the controlling features of my invention,
are concerned, the specific type of control shown may be employed to control a fluid motor 38 to actuate any type of a movable member, whether it be the pressing head 24, or any other movable member in an entirely different type of machine.
A further feature of my invention, which is particularly desirable in pressing machines, is that of locating the loleeding trigger exhaust valve 46, the inlet valve 44, and the check valve 50, where employed, in a master control valve 52, the
movement of all three of these valves being controlled by the movement of a single stem memvalve 46. As explained, the quick acting flush valve 48 is automatically self-opening when a drop in pressure occurs in the feed line 42 due to opening of the bleeding trigger exhaust valve 46. One feature of my invention is that the master valve is substantially leak-proof for the selfclosing of the exhaust valve 46 takes place just prior to the actual opening of the inlet valve 44 and the self-closing of the inlet valve 44 takes place just prior to the opening of the exhaustvalve 46.
In the preferred form of master control valve 52 shown, said valve is provided with a chamber 56, and the feed line 42 includes an inlet line 58 connecting said chamber56 with the source of fluid pressure supply and an outlet line 60 connecting said chamber 56 with the fluid motor 38, or with the quick acting :flush valve 48 where employed. The inlet valve is provided at the inlet port of said chamber 56, the bleeding trigger exhaust valve 46 is alsomrovided in said chamber 56 and the control member 54 also is movable from a closed position in said chamber 56 free of'said inlet valve 44 and retaining said exhaust valve 46 in open position to an open position opening said inlet valve 44 and permitting closing of said exhaust valve 46. Means such as the operating lever or control member 62 operable from without said master control valve is provided to move saidv stem member 54 to said open position and spring means 6 is provided to normally urge said stem member 54 to a self- :closing position when said operating lever 62 is free. As also stated, in the preferred embodiment shown, the inlet and check valves 44 and 50 are of a self-closing ty e, the bleeding trigger exhaust valve 46 is also of a self-closing type andv ing it and said stem member 54 in closed position, moving said stem member 54 to a position opening said inlet valve 44 and permitting selfclosing of said exhaust valve 46 and that the means normally urging said stem member to a closed position will automatically function when pressure is removed from said operating lever or control member 62 to move said operating lever I and stem member back' to a closed position opening the exhaust valve 46 and permitting selfber 54. In the embodiment shown, the inlet valve closing of said inlet and check valves 44 and 50.
In the preferred embodiment shown, my preferred type of master control valve is preferably constructed as follows: Said valve includes a casing 64 (Fig. 1) having a chamber 56 divided into an inlet chamber 66 and an exhaust chamber 68. Said inlet chamber 66 has an inlet port I connected by the pipe 58 to the source of fluid pressure supply and a check valve seat I2 surrounding said inlet port I0. The exhaust chamber 68 is connected to said fluid motor 38, or to said quick acting flush valve 48 by the pipe 60, as explained. The partition I4 extends between said inlet chamber 66 and said exhaust chamber 68 and is provided with suitable passage means I6 connecting said inlet and exhaust chambers 66 and 68. The exhaust chamber is provided with the exhaust valve branch "I8 and the operating lever branch 80 projecting radially therefrom, in the embodiment shown, being in diametric alignment. The inlet valve 44 comprises an inlet valve seat 82 preferably of frusto-conical shape in the lower end of said inlet chamber 66 around the upper end of said passage means I6. The check valve 50 includes a hollow cylindrical valve guide socket 84 having a side wall 86 slidably mounted in the cylindrical upper chamber 66 at a spaced distance from the wall 88 thereof by means of the annular flanges 90 rigidly mounted at spaceddistances on said chamber Wall and provided with the plurality of perforations 92 therein as shown in Fig. 5. Said valve guide socket 84, in the embodiment shown, is provided with a conical upper end 94 forming the check socket 84 is also provided with the open lower end 96 located immediately above said inlet valve seat 82. Spring means 98 comprising the helical spring 98 i 'contained within said socket 84. The
An inlet valve stem 54 is provided for vertical reciprocation within said exhaust chamber 56. Said valve stem 54 has an upper end I04 adapted to about said ball inlet valve 44 to raise it aga nst the pressure of the spring 98 to unseat said ball inlet valve 44 to open said inlet valve. Said valve stem 64 is provided at a point intermediate the ends thereof with the flange means I 06 projecting radially therefrom, in the preferred embodiment comprising a disk I06. The valve stem 54 is reciprocatably mounted in said exhaust chamber 68 with the upper end .I04extending through said passage bore I00 and into said inlet valve chamber 66 to unseat said ball inlet valve 44. Means are provided to vertically align said valve stem for vertical reciprocation within said exhaust chamber 68 and passage means E6, in the preferred embodiment, said. .means comprising a hollow stud I08 having a central bore H0 discharging into said passage bore I00 for containing the upper end of said valve stem 54 and projecting vertically downwardly from the upper end of said exhaust chamber 56 between the lower ends of said radial passages I02. Said aligning means also includes, in the embodiment shown, a hollow stud I I2 projecting externally downwardly from said casing 64 having a bore II4 to receive the lower end of said stem 54. A helical spring I I6 is provided in said lower exhaust chamber 68 abutting said disk I06 or flange means and the upper wall of said lower chamber between said radial passages I02 to normally urge said valve stem member 54 to closed position free of said inlet valve 44 to permit the normal self-closing or seating of said inlet valve 44 and said check valve 50 by said expansion seating spring means 98.
A self-seating exhaust valve 46 is provided in the exhaust valve branch 18 of said exhaust chamber 68. Said exhaust valve 46 includes a peripheral shoulder II8 projecting radially inwardly in the inner end of said exhaust branch I8 and an exhaust port I20 in the outer end of said exhaust branch I8 having an exhaust valve seat I22 at the inner end thereof, in the embodiment shown of frusto-conical shape. The exhaust valve proper 46 has a surface I24 seatable on said exhaust valve seat, in the preferred embodiment, comprising a partially spherical surface I24 to cooperate with said frusto-conical valve seat I22. In the embodiment shown, the exhaust valve 46 has an annular disk I26 perforated as at I21 projecting radially outwardly therefrom as shown in Fig. 7 terminating in an outwardly projecting peripheral flange I30. An exhaust valve stem I32 projects inwardly from said valve 46 terminating in an inner end I34 preferably spherically enlarged, as shown, contacting the disk I06 of said inlet valve stem 54. Spring means, such as the helical spring I36 is provided in said exhaust branch 18- surrounding said valve stem I32 and having an inner end abutting said peripheral shoulder II8 and an outer end abutting said perforated exhaust valve disk I26 to normally urge said exhaust valve 46 to a seated position on its valve seat I22 with the peripheral flange I30 abutting the outer end of said exhaust branch 18 exterior of said exhaust port I20 when the enlarged inner rod end I34 is free of said inlet valve stem disk I06.
Said master valve also includes an operating lever or control member 62 nonleakably universally pivotally mounted in the end wall I40 of said operating lever branch 80 having an inner end I38, preferably spherically enlarged, as shown, underlying said inlet valve stem disk I06. For this purpose, a port I42 is provided in the end wall I40 of said-outlet branch having an outwardly diverging wall I44 and a partially spherical socket I46 in the inner end thereof. In the embodiment shown, the outwardly diverging portion I44 comprises a separate extension from the outer wall I40 of said operating lever branch 80. The control lever 62 has a spherical pivot enlargement I48 centrally thereof seated in said partially spherical socket I46 for universal movement of said control lever therein. The enlarged spherical inner end I38 of said control lever 62 contacts said valve stem disk I06. The outer end I50 of said operating lever or control member thus proiects outwardly through and beyond the outwardly diverging internal wall I44 of said outlet port I42 or extension I52, through and beyond the end of said port or extension I52 abutting the wall of said port or extension to limit the umversal movement oi the outer end I88 of said operating lever or control member 82. To render the operating lever branch leak-proof I preferably provide a sealing spring washer I64 having a central hole I68 adapted to overlie the inner endof the spherical enlargement I48 to normally urge it outwardly to continuously abut and cover the inner surface of said spherical lever pivot portion I48 to positively prevent leakage of air through said port I42 into said operating lever branch 88.,-
Any suitable type. of means may be provided to operate said master control valve by the depression of the outer end I58 of said operating lever or control member 62.- The exhaust valve branch 18 exterior of said exhaust port I28 may be provided with suitable sound deadening means I68, such as felt, or otherwise, to muille the changes in the flow of air-through said valve.
As stated hitherto, I preferably employ a quick acting flush valve 48 interposed in said feed line 42 beyond said trigger exhaust valve 46. Said flush valve includes a chamber I68 having an in let port I 62, an outlet port I64 and an exhaust port I66, an exhaust valve I 68 to close said exhaust port I66 normally urged to an open position, an inlet valve I18 connected to said exhaust valve controlled by a drop of pressure from said inlet port I62 caused by bleeding of said trigger that. fluid pressure from said-inlet line 42, on opening of said inlet valve 44, will raise said flush valve inlet valve I18, said connected valve stem I84 and said connected exhaust valve I88 to a position closing said exhaust port I 68 and that said inlet valve I18, connected valve stem I84 and said connected exhaust valve I68 will drop on reduction-of pressure in said feed line to open said exhaust port I66 and close said inlet port I62. I also provide a combination check and differential valve I12 in said inlet chamber I16 preferably of flat annular formation and of a size to seal said vent means I86 in said inlet valve I18. I also provide spring means I98 in said chamber I68 abutting said check valve I12 of a strength to normally urge said check valve I12 to a position sealing said inlet vents I86, namely, with said check valve I12 covering and closing said vent means I86, said spring means I98 being yieldable, however, to permit sustained pressure in said line to raise said check and differential valve I12 against the pressure of said spring I88 to permit fluid to flow through said vent means I I86 around said spring I98 in said inlet chamexhaust valve 46 to permit back pressure from said fluid motor 38 to rapidly close said inlet port I62 and open said connected exhaust valve I 66 and a self-closing combination check and differential valve I12 in front of said exhaust valve I68 and in rear of said inlet valve I18 to prevent back pressure in said line 42 and effective on sustained pressure in said line to admit fluid pressure through to said fluid motor 88.
In the preferred embodiment, said quick acting flush valve is preferably constructedas follows: The chamber I68 is divided into an upper exhaust portion I14 and a lower inlet portion I16 connected by the passage means I18. The inlet chamber I16 has the inlet port I62 in the lower wall thereof connected to the exhaust chamber 68 of said master valve by the pipe portion 68 of said feed line 42. The exhaust portion I14 has the outlet port I64 therein and the exhaust port I66 therein in vertical alignment with the inlet port I62 in said inlet chamber I16. The exhaust port I64 is connected to said fluid motor 38 by the pipe I88 forming part of the inlet or feed line 42. The exhaust port I66 is provided with ,the exhaust valve seat 182, preferably of partially spherical shape extending around said exhaust port. The valve stem I84 is mounted for vertical reciprocation within said chamber I68 and projects vertically upwardly through said inlet chamber l16, said pa'ssagemeans I18 and said exhaust chamber I14. Said valve stem I84 is provided with the inlet valve I18 on the lower end thereof adjacent said inlet port I62 comprising in the preferred embodiment shown, a disk valve I18 of substantially the circular or other area of said inlet chamber I 16 adjacent said inlet port I62 having a plurality of vents I86 therein exterior of said inlet port I62 preferably arranged in annular formation exteriorvof said inlet port I62 as shown in Fig. 8 providing a solid .central portion I88 for sealing said inlet port.
I62 to provide an inlet valve. The exhaust valve I68 is mounted on the opposite end of said stem I 84 in said exhaust chamber I14 and preferably comprises a spherical valve I68 adapted to seat in said partially spherical valve seat I 62 sur-- rounding said exhaust port I66. It is apparent 7 ber I16 through said passage means I18 and out through said outlet port I 64 and through said pipe I88 to actuate said fluid motor 38. Exhausting of pressure in said feed line 42 due to opening of said bleeding trigger exhaust valve 46 will inevitably permit lowering of said inlet valve I 18, valve stem I 84 and connected exhaust valve I 68 to permit rapid evacuation of fluid from said fluid motor 38 through said pipe I 88, outlet port I62, exhaust chamber I14 and exhaust port I 68. In the embodiment shown the other end of the spring abuts the lower surface of the ball exhaust valve I68. If desired, the entire flushvalve may be inverted.
As stated hitherto, I believe the novel features of structure of my improved quick. acting flush valve are also novel. As also stated hitherto, it is apparent that insofar as certain aspects of my invention are concerned, the quick acting flush valve 48 may be omitted if desired;
As stated hitherto, my invention also includes safety means, including a pair of handles I92 for actuating the fluid or other motor employed to bring the pressin members 22 and 24 into pressing juxtaposition. Features of my invention reside in the facts that the handles I92 are only effective on a single movement thereof in a single direction to affect the controlling means for the fiuid motor and that they are operableto actuate the controlling means for the motor to bring said members 22 and-24 in pressing juxtaposition only whenflboth of said handles I 92 are moved-together, movement-of one of said handles I92--- only being operable to a'ilectsaid controlling means to separate said ressing members. It is thus obvious that during the dangerous period ofrelative movement of said pressing members 22 and 24 topres'sing juxtaposition,
both'of thev operator's hands are employed on the respective handles I92 to cause such movement and that if anything should happen causing the removal of a hand from one of thehan'dles, the device will automatically function to positivelyeffect relative opening movement of said p ns'f members.
A further desirable feature of my preferred embodiment therefore is that each of the actuating means is moved in the same direction to release to safety position as to move the device to a pressing position, both of the handles, however, being required to efi'ect movement of the machine to a pressing position. Insofar as this feature of my invention is concerned, it is apparent that any type of motor may be employed to move the members 22 and 24 to and from pressing positions. As stated hitherto, I preferably employ the fluid motor 38'for this purpose. As most types of pressing machines are provided with a table 26, I have found that an ideal place for the mounting of the handles is below the front end of said table where they will not catch upon the clothes or other material being operatedon. The respective handles I92 are preferably provided of a relatively large area so that they may be accessible from various points along the front of the machine. If desired, guard means, such as the flange I94 (see Fig. 9) projecting integrally downwardly from the front end of the table 26 may be provided to further protect the handles. Any suitable type of handles, however, may be employed, such as the operating buttons I92 shown in Fig. 11, each of which actuates an axially slidable wire I96 encased in a suitable protective armored cylindrical flexible casing I98. The type of handles or buttons shown in Fig. 11 are particularly desirable when remote control over a machine at a distance is desired, or a plurality of machines assembled to operate as a unit are employed. As stated, one feature of my invention consists in the fact that movement of both handles in a single direction is required to actuate the controlling means to bring the pressing members into pressing juxtaposition and while movement of one handle only is preferably employed to release said members from pressing juxtaposition, other tyes of means to release 'said members or to evacuate the fluid motor for this purpose, such as shown in my copending application for patent on Control means a for pressing machines, Ser. No. 376,286, filed January 28, 1941, maybe employed. While any type of means may be employed to move the movable stem member 54 to actuate the inlet valve 44 and the exhaust valve 46 and any type of means for controlling the motor or the flow of fluid to a fluid motor may be employed with my improved handles just described, best results may be obtained when my improved handle means are employed to regulate the inlet valve 44 and exhaust valve 46 through the movement of the movable stem member 54 in association with the specific controlling means shown and to be described. In the embodiment shown, both the fluid flow controlling means and the handle means for controlling the movement of the movement control member 54 are particularly designed to cooperate with each other for use in a garment pressing machine and hence, in the preferred embodiment shown, the respective handles I92 are designed and constructed to actuate the movable stem member 54 of the master valve 52 through the medium of the operating lever or control member 62. When employed for this purpose, the respective inlet valve 44, check valve 50 and trigger exhaust valve 46 are preferably self-closing in the manner previously described, so that when both handles I92 are not actuated, the operating lever 62 will be immediately released to a safety position closing the inlet valve 44 and opening controlled by the actuating means for bringing the pressing members 22 and 24 into pressing juxtaposition; substantially when said pressing members 22 and 24 have been brought into pressing juxtaposition, to permit said controllin means to continue to function to permit actuation of said fluid motor to apply ironing or other pressure without further actuation of said respective handles I92, freeing the hands for other uses on other machines, if desired, while the ironing pressure is being applied.
Any means may be provided to release the movable control member 62 to free it from said latch 200 to exhaust the fluid motor 38 to separate said pressing members.
If desired, means may be provided to bring said members 22 and 24 to a pressing position with relatively light pressure and to automatically apply a greater predetermined ironing pressure to said pressing members after they have been brought into pressing juxtaposition. My invention is particularly applicable to a pressing machine employing this greater ironing pressure, for not only, are both hands kept occupied during the dangerous period of bringing the members into pressing juxtaposition, but also said members are brought together with relatively light pressure during this dangerous period. To achieve this result I preferably employ a modification of the linkage system shown in Patent No. 1,897,689 for Actuating mechanism for garment pressing machines and Patent No. 2,026,- 264 for Garment pressing machine, in association with the fluid motor 38, wherein one link 202 is pivotable on one fulcrum 204 to bring said members to pressing position with relatively light pressure and automatically pivotable after a predetermined amount of its movement on a different fulcrum 206 to apply a greater ironing pressure to said pressing members. Means are provided actuated by said linkage to move the latch 200 to a position overlying the outer end I of the operating lever or control member 62 substantially at the instant the pressing members 22 and 24 are brought into pressing position and the fulcrum of the link 202 has changed from 204 to 206 ceasing the application of relatively light pressure to said pressing members 22 and 24 through the fulcrum 204 and initiating the period of heavy ironing pressure to said pressing members through the fulcrum 206. It is then obvious that as the outer portion I50 of said operating lever 62 is then brought to a position underthe outlet valve 46 permitting immediate sepahitherto described, means preferably comprising gravity actuated latch means 200 automatically lying the latch 260, the device will be held in a position supplying fluid to said fluid motor to exert greater predetermined ironing pressure and permitting release of the handles I92 and that the latch 200 will only take effect when both handles are released together. It is then obvious that if one of said handles I92 only be moved, as shown in Fig. 4 in dotted lines, that it will function to knock the outer end I50 of the operating lever or control member 62 free of said latch 200 to permit self-closing of said inlet valve 44 in the manner explained and immediate actuation of said trigger exhaust valve 46 to cause immediate relative separation of said pressing members 22 and 24. It is obvious that so far as the means preferably comprising latch means for hblding the master valve or inlet valve open to actuate the fluid motor 38 is concerned, that any type of control means for moving the outer end I50 of the operating lever or control member 62 may be employed, but that greater safety aaeaasa 7 can be effected ii the pair of handles I02 hitherto described beemployed, operable when both are moved to actuate the fluid motor to bring the pressing members into pressing juxtaposition and operable when one only is moved to evacuate the fluid motor to permit the separation of said pressing members. Inasmuch as all of'these safety features are preferably employed togethen'I will now describe in detail the specific type of handles, specific type of linkage and the specific type of latching means preferably employed by me.
As stated hitherto, means are provided to depress the outer end I50 of said operating lever or control member 62 to raise said inlet valve stem member 54 through the medium of the disk I06 against the pressure of the spring I I6 to raise said inlet valve stem 54 to abut said inlet valve 44 to open the inlet valve to permit flow of fluid to the fluid motor 30 and to permit self-closing of said exhaust valve 46, to cause said fluid motor 38 and linkage 40 where employed, to relatively move said pressing members 22 and 24 to said closed pressing position. Said means includes a pair of cams 208 having upwardly tapered inner edges 2I0 forming, when in raised position, a crotch 2I2 between them in which the outer end I50 of the operating lever or control member 62 is adapted to liewith the overlapping inner cam ends normally overlying said outer end I50 when it is in its. raised position.
Said cams are each mounted on respective arms 2 projecting forwardly from and pivotally mounted on the master control valve 52 as at 2I5. The pair of control handles I92 is provided, each extending underneath the front end of the table 26 and each connected to a pivotally mounted cam arm 2 in the manner diagrammatically shown in Figs. 1-4 by the link 2 I0, or specifically as shown in Figs. 9 and 10 by an arm 2I8, having the lower end thereof engaged within a suitable groove 2I8 in said cam arm 2. With this construction, it is obvious that when both said handles I92 are raised, said cams 200 are conjointly lowered to depress the outer end I50 of the lever or control member 62 in the crotch 2I2 between them to move said stem member 54 to open the inlet valve 44 and permit self-closing of said exhaust valve 46 to causeflow of fluid to said fluid motor 38 to relatively move said pressing members to closed position. It is also obvious that when either handle I92 is raised alone, no crotch 2 I2 will be provided to become effective to lower the outer end I50 of the operating lever or control member, but that the operating lever end I50 will be merely pivoted sidewise so that the spring I I5 may function to maintain or move the control member 54 and operating lever in or to a closed position closing the inlet valve and opening the exhaust valve to evacuate the fluid motor 38 to permit the weighted arm 35 to raise the, pressing head 24 to open position.
As stated hitherto. I also provide the latch means 200 effective to latch the outer end I50 of the operating lever 62 in a depress d open postion maintaining the inlet valve 44 open and the exhaust valve 46 closed to continue to apply fluid pressure to the fluid motor 38 as shown in Fig.3
200 is thus pivotal on the pivot 20I from a position free of the outer end I40 of said operating lever or control member '02 as shown in Fig. 1 to a position overlying said operating end as shown in Figs. 2 and 3 after said pressing members have been brought to a pressing position, in'the preferred embodiment shown, substantially when the link 202 has changed its fulcrum from 204 to i sure. In the preferred embodiment, the link 220 is provided with a boss 222 adapted to abut a pin 224 projecting laterally from the weight arm 226 of the latch 200. In the embodiment shown, it is obvious that when either handle I92 is raised alone as shown in dotted lines in Fig. 4, that the respective ca'm surface 2I0will knock the outer end I 50 of the operating lever '62 laterally free of the latch 200 to permit the spring H6 to immediately raise theouter end I50 of the operating lever-or control member and to lower the stem member 54 to permit self-closing of the inlet valve 44 and to open the exhaust valve 45. It is obvious that when the latch 200 has functioned to overl e the depressed outer end I50 of the operating lever or control member after the handles I92 have been simultaneously actuated to simultaneously depress the cams 208 to. lower the outer end I50 of the operating lever in the crotch between them,
that said latch 200 will function to retain said 22. A stated, any means may be provided to re-, I
outer end in depressed position opening the inlet valve 44 and permitting closing of the exhaust valv 40 to continuously apply fluid pressure to the fluid motor, and where the link 202 is employed, with greater pressure, for the desired ironing interval. It is obv'ous that when the inlet valve 44 is closed and the trigger exhaust valve 45 opened on raising of the outer end i 50 of the operating lever that the flush valve 48. where employed, will function to quickly/evacuate the fluid motor to permit the weight arm 26 to raise the pr ssing head 24 away from the pressing buck lease the latch 200 from the outer end I50 of the operat ng lever or control member I50fand .for this purpose I may provide a supplementalloot lever 228 to actuate a link 230 to raise the latch arm 226 to pivot the latch 200 free of the outer end I50 of said operating lever 52, such means being alternative or supplemental to the means previouslydescribed for unlatching the latch.
It is apparent that with the construction hitherto described, the latch 200 is gravity actuated by the weight of the weight arm 220' thereof and that the link 220 abutting the pin 224 of said weight arm 226 prevents the latch fr'om be'ng moved into latching position until the pressing members 22 and 24" have substantially reached a closed pressing position when the link 2201 will have been lowered to theposition shown in Fig. 3.by the respective movements of the parts of the l nkage 40 caused by actuation of the fluid motor 38. It is apparent that with this construction a sharp gravity actuation of the latch 200 will be provided, sharper than where th locking of the mechanism is diupwardly from said link 220 to overlie the pin 224 and retain it in a position at all times immediately overlying the upper surface of said link 220, as shown in Fig. 12. With this spring construction, as shown in Fig. 13, it is obvious that the spring 225 may yield to prevent jamming and consequent breaking of parts, should the point of the latch abut the end I50 of the operating lever or control member during its pivotal movement. The embodiment of latch, I have shown in Figs. 1-4 will also not jam, the latch itself merely tilting should its point abut the end I50 of the operating lever 62 during its pivotal movement, and it is apparent that in both the embodiment shown in Figs. 12 and 13 and the embodiment shown in Figs. 1-4 that I have provided jam-proof structures. g
In place of the latch means 200 automatically operated by said actuating means when said pressing members are brought into pressing juxtaposition to permitrelease of said handles while said controlling means continues to function to permit further actuation of said fluid motor to apply said ironing pressure, any other type of latching means may be employed for this purpose, such as the type of means shown in my copending application, S. N. 376,286, filed January 28, 1941, for Control means for pressing machines, effective to release similar respective handles while the ironing pressure is being applied and in addition any suitable type of means to evacuate the fluid motor may be employed, such as the means shown in said application. It is immaterial whether said latching means be controlled by the linkage as shown herein, or be controlled by the rising of the pivoted cylinder as shown in said application, by movement of the pressing head, by the flow of fluid, or otherwise. If desired, any suitable means and manually operated control therefor may be employed to evacuate the fluid motor other than the specific type shown.
I have also shown in Fig. 12 a structure analogous to that shown in said copending application, wherein the cylinder 246 of the fluid motor 38 itself actuates the link 220 in place of having the movement thereof controlled by the motion transmitting mechanism or linkage 40. In this construction, the link 220 is not pivoted on the same pivot as the latch 200, but is pivoted at the point 23I as a lever of the flrst class. The rear end of said link 220 is pivotally attached to a rod 233 having an elongated slot 235 at the lower end thereof receiving a pin 23! projecting laterally from said cylinder, the slot 235 being of such a length as to become operative to tilt the front end 239 of the link 220 downwardly when the cylinder 246 has been actuated substantially far enough to substantially close said pressing members 22 and 24.
I have shown in Fig. 11 a pair of an alternative type of handles I92, each effective to axially move a wire I96 encased in a flexible armored cable I98 to raise arespective rod 232 to abut a respective arm 234 projecting rearwardly from a cam arm 2I4, to lower the respective cams 208 together when both of the respective buttons or handles 192' are depressed together to lower the outer end I50 of said operating lever or control outer end I50 of said operating lever 62 from the latch 200 to permit a quick evacuation of said fluid motor 38 for separation of said pressing members 22 and 24. In the embodiment shown, each operating handle I92 comprises a socket I having a stem 236 projecting downwardly through a bore 238 therein connected to an end 240 of the axially movable wire I96, said button or handle I 92 being normally urged to a raised position by a spring 242 contained in said socket 24I underneath said button I92. While I have shown in Fig. '11 the operating buttons I92 and the cable encased axially movable wires I96 as an alternative construction to the handles I92 shown in Figs. 1-10, it is obvious that this particular structure of cable encased axially movable wire I96 may be readily employed for any purpose of handle may be employed therefor, it is apparent I that movement of either handle alone before or after latching will function to release the press, the depression of one handle alone prior to latching causing the end I50 of the operating lever or control member 62 to ride up the single cam surface and the actuation of a single handle after latching, similarly functioning to permit the spring I I6, to urge the outer end I50 of the operating lever or control member 62 upwards, the respective cam surface in this instance also functioning to move said end I50 of the operating lever 62 laterally free ofsaid latch to permit said spring II6 to force it upwards along said cam surface. It is obvious that the specific structure of the internal wall I44 of the exhaust branch port I42 permits and limits the necessary movements of the end I50 of the operating lever 62 for this purpose.
I have shown in Fig. 1 my device in a static position with the pressing members in relatively open position. When both operating handles I92 are moved, as shown in Fig. 2, the outer end I50 of the operating lever or control member will be lowered by the cams 208 to raise the stem member 54 to open the inlet valve 44. against the pressure of the springs H6 and 98 and raise the disk I06 free of the exhaust valve stem I32 to compress the spring 98 to permit the socket 84 to slide to open the check valve 50 to permit fluid to be passed to the flush valve 48 as indicated in Fig. 2 by the arrows. Fluid flowing through the inlet port I62 of the flush valve 48 will then conjointly raise the inlet valve I10 and differential valve I12 and lift the connecting valve stem I84 and connected exhaust valve I68 to close the exhaust port I66. Sustained pressure through said inlet line will then raise thedifferential valve I12 free of the ducts I86 compressing the spring I90 for this purpose so as to permit flow of fluid through the flush valve 48 out the outlet port I64 thereof and pipe I to the fluid motor 38 pivotally mounted on the pivotpin 244 on the front end of the machine frame 28. The fluid motor 38 comprises the cylinder 246 pivotally mounted as at 244 on said frame and the piston head 248 axially movable in said cylinder to actuate the piston rod III connected to the linkage II. The flow of fluid to the fluid motor II will urge the piston rod III outwards, the link II: functioning on its fulcrum III to move the pressing head II rapidly towards the buck with light pressure. When theparts' have assumed the position shown in Fig. 2. the'latch III will overlie the outer end III of the operating lever II. The link I" actuated by the linkage II will bewithdrawn from the latch III substantially at the instant shown in Pig. 2 when the pressing head is brought into pressing juxtaposition with the buck 22 to permit instant gravity actuation of the latch III to latch the outer end III of the operating lever ,or
control member II in this position to permit re-! lease of the handles III as shown in Fig. 3 with said latch then retaining the mastervalve II-a'nd flush valve II in a position permitting the ingress of supplemental fluid to said fluid motor II to urge the piston thereof to the position-shown in Fig. 3, the link 2|! pivoting on the point I as a fulcrum to apply the ironing pressure. When the piston III has reached the outer end of its stroke in the cylinder, the differential valve I12 in the flush valve will then be lowered by the spring III due to a substantial equalization of pressure in the cylinder I and inlet line II, .to cause said valve I12 to function as a check valve.
When it is desired to release the pressing members, one handle I92 may be raised as shown in dotted lines in Fig. 4 to permit the cam surface III thereof to knock the outer end III of said omrating, lever or control member I2 laterally free of the latch III as shown in the dotted line mid position shown in Fig. 4, permitting the spring III to.='urge'the control member II downwards and rapidly raise the outer end III of said operating lever; or control member to its upper static position. As the valve stem member II is urged downwards, it is apparent that the disk III thereof will abut the exhaust valve stem III to tilt the exhaust valve II to the open position shown and that the stern member II will belowered free of the inlet valve II so that the spring II will immediately function to close the inlet volve II and substantially simultaneously close the check valve II. As pressure in the master valve I2 is released by the trigger exhaust valve II, pressure will fall in the pipe II in such a deree as to permit the spring III in the exhaust valve II to urge the difl'erential valve I12 to close the inlet ventmeans III in said inlet valve I10 and said fluid pressure will force the inlet valve "I, the connected valve stem III and exhaust valve III to open the exhaust port III in the flush valve II permitting the rapid discharge of fluid from the cylinder III backwards through the connecting pipe III and out through the exhaust port III to permit the weighted lever arm II to lower the linkage II to move the piston 248 within the cylinder 2 to exhaust the fluid out of the fluid motor II and out said exhaust port III.
It is thus apparent that I have provided a novel type of safety control for pressing or other machines preferably one employing a fluid motor with the advantages described above. I
It is understood that my invention is not limited to the speciflc embodiments shown and that various deviations may be made therefrom without departing from the spirit and scope of the appended claims.
What I claim is:
1. In a pressing machine, relatively movable pressing members, a fluid motor for bringing said members into pressing juxtaposition, means for controlling the flow of fluid to said fluid motor I including a universally mounted control member normally urged to a position exhausting said fluid motor movable to a position permitting flow to said fluid motor, a pair of manually operable means, means actuated by each of said manu-, ally operable means to apply an oblique force in a forward direction to said universally mounted control member, obliquely opposite to the force I applied by said other means, adapted, when both manually operable means are actuated together to move said universally mounted controlmember forwardly to actuate said controlling means to permit flow to said motor; and
when one of said manually operable means only is actuated, to move said universally mounted control member obliquely to permit return of said controlling means to a position exhausting said' fluid motor, to separate said pressing members.
2. In apressing machine, relatively movable pressing members, a motor for bringing said members into pressing juxtaposition, means for controlling said motor including a universally mounted control member normally urged to a position shutting off said motor movable to a position actuating said motor, a pair of manually operable means, means actuated by each ofsaid manually operablemeans to apply an oblique force in a forward direction to said universally mounted control member, obliquely opposite to the force applied by said other means, adapted, when both manually operable means are actuated together to move said universally mounted control member forwardly to actuate said motor; and when one of said manually operable means only is actuated, to move said universally mounted control member obliquely to permit return of saidcontrolling means to a position shutting oil said motor, to separate said pressing members.
3. In a pressing machine, having a table, guard means projecting downwardly from the table, relativelymovable pressing-members, a motor for bringing said members into pressing juxtaposition, means for controlling said motor including a universally mounted control member normally urged to a position shutting off said motor movable to a position actuating said motor, a pair of manually operable means mounted and operative from below the front end of said table behind said guard means, means actuated by each of said manually operable'means to apply an oblique force in a forward direction to said universally mounted controi'iriember, obliquely opposite to the force aPl lied by said other means, adapted,
' when vboth manually operable means are actuated together to move said universally mounted control membe'r forwardly-to actuate said, motor; and when one of said manually operable means only is actuated, to move said universally mounted control member obliquely to permit: return of said controlling means to a position shutting off said motor, to separate said pressing members 4. In a pressing machine, relatively movable? pressing members, actuating means to relatively move said pressing members to a pressing position and thereafter apply pressure, including a fluid motor, means for controlling the flow of fluid to said fluid motor including a universally mounted control member normally urged to a position exhausting said fluid motor, movable to a position to actuate said controlling means to permit flow to said .fluid motor, a pair of menually operable means, means actuated by each of said manually operable means to apply an oblique force in a forward direction to said uniposite to the force applied by said other means,
adapted, when both manually operable means are actuated together to move said universally mounted control member forwardly to actuate said controlling means to permit flow to said motor; and when one of said manually operable means only is actuated; to move said universally mounted control member obliquely to permit return of said controlling means to a position ex hausting said fluid motor, to separate said pressing members, and latch means automatically controlled by said actuating means to latch said movable control member in a position actuating said fluid motor when said pressing members are brought into pressing juxtaposition to permit release of said manually operable means while said movable control member continues to function to permit further actuation of said fluid motor to apply said pressure, inoperable when a single oblique force applying means has been actuated by its respective manually operable means to knock said universally mounted control member from said latch means.
5. In a pressing machine, relatively movable pressing members, actuating means to relatively move said pressing members to a pressing position and thereafter apply pressure, including a fluid motor, means for controlling the flow of fluid to said fluid motor including a universally mounted control member normally urged to a position exhausting said fluid motor movable to a position to actuate said controlling means to permit flow to said fluid motor, a pair of manually operable means, means actuated by each of said manually operable means to apply an oblique mounted control member, obliquely opposite to the force applied by said other means, adapted, when both manually operable means are actuated together to move said universally mounted control member forwardly to actuate said controlling means to permit flow to said motor; and when one of said manually operable means only is actuated, to move said universally mounted control tuating means to latch said movable control member in a,position actuating said fluid motor operative only on the joint release of said manually operable means after said pressing members have been brought into pressing juxtaposition on continued joint actuation of both of said manually operable means to thereafter permit release .force in a forward direction to said universally of said manually operable means while said movable control member continues to function to permit further actuation of said fluid motor to apply said pressure, inoperable when a single oblique force applying means has been actuated by its respective manually operable means to knock said universally mounted control member from said latch means.
6. In a pressing machine, relatively movable pressing members, actuating means to relatively move said pressing members to a p e g position and thereafter apply pressure, including a fluid motor, means for controlling the flow of fluid to said fluid motor including a universally mounted control member normally urged to a position exhausting said fluid motor movable to a position .to actuate said controlling means to permitflow to said fluid motor, a pair of manually operable means, means actuated by each of said manually operable means to apply an oblique force in a forward direction to said universally mounted control member, obliquely opposite to the force applied by said other means, adapted, when both manually operable means are actuated together to move said universally mounted control member forwardly to actuate said controlling means to permit flow to said motor; and when one of said manually operable means only is actuated, to move said universally mounted control member obliquely to permit return of said controlling means toa position exhausting said fluid motor, to separate said pressing members, and latch means automatically moved by said actuating means to a position, after said'pressing membersally operable means, sothat the joint release of said manually operable means may permit said control member to abut said latch means while said movable control member continues to function to permit further actuation of said fluid motor to apply said pressure, and means to relatively move said movable control member free of said latch to exhaust said fluid motor to separate said pressing members.
7. In a pressing machine, relatively movable pressing members. actuating means to relatively move said pressing members to a pressing position and thereafter apply an ironing pressure, including a fluid motor, and means for controlling the flow of'fluid to said fluid motor including a universally mounted control member normally urged to a position exhausting said fluid motor movable to a position to actuate said controlling means to permit flow to said fluid motor, a pair of manually operable means, means actuated by each of said manually operable means to apply an oblique force in a forward direction to said universally mounted control member, obliquely opposite to the force applied by said other means, adapted, when both manually operable means are actuated together to move said universally mounted control member forwardly to actuate said controlling means to permit flow to said motor; and
when one of said manually operable means only is actuated, to move said universally mounted control member obliquely to permit return or said controlling means to a position exhausting said fluid motor, to separate said pressing members,
and means automatically controlled by said ac' movable pressing members, actuating means torelativeiy move said pressingmembers to a pressing' position and thereafter, apply an ironing pressure, includingfa fluid motor, means for controlling the flowof fluid to said fluid motor, including a movable control member normally urged to a position exhausting said fluid motor and manually actuated means for moving said moyable control member to a position to admit fluid to said fluid motor to relatively move said pressing members to pressing juxtaposition and apply pressure on a single movement of said manually actuated means, and gravity actuated latch mean automatically controlled by said actuating 1 ed man an I otally mountedon the front'ofes'aid pressinsrmachine frame, a pairof control handles extending assesso means to become .efl'ective-tomove into a position permittinglatcbing ofsaidmovitblecontrolmemher in said actuating 'positiononly on release :of saidmanually actuated means after said pressing 1 members have been broughtinto pressing "juxtaposition when said controlling means may :con-
tinue to function to permit further actuation of said fluid motor to apply said ironing pressure.
9. In a) garment pressing machine, a frame, a
tablermounted on said frame, relatively movable pressins members, actuating means to relatively move said members to a pressing positionand thereafter apply an ironing pressurein cludingm fluid motor, means for controlling the flow'of;
fluid tosaid fluid motorincluding a movablecontrolmemb'er normally-urged to a raisedxaposition exhausting-said fluid motor and means to .movesaid movable control member to supply, :fluid:to
said fluid motorto causesaidfluid motorzand actuating means to relatively move'saidpressing members to pressing position and .toretain :said: members in-said presslns position during the application of said ironing pressure.
comprising a latch pivotally mountedvonssidzframerweighted to pivot-by gravityto an operative positionoverlying a portion .of said movable control member when in actuating position, a pair of cams having downwardly tapering inner edges having overlappinginner ends normally overlying said portion of said control member when in a raised position exhausting said fluid motoneach mountprojecting. forwardly from andpivunderneath the front end of said table. pivotally mounted on said machine frame and each connected to a pivotally mounted cam arm so that --by ma function to knock v-saidportion of said control membe laterally ;to; eflect movement to Jfluid motor including ljzmovahle control "member normally "urged to a raised spositionexhausting, :said fluid motor and means to move .said'amovable control *member to supply fluid to saidufluid .motor to causevsaidifluid motor and v actuating means torelatively move saidpressing members to pressing position, comprising a pair of camsxhaving :downwardlv tapering inner :edges having overlapping, inner ends normally "overly ing a gportion ot .saidcontroly-member when in ;a
raised position, each mounted on an arm projecting ziorwardly frompivotally mounted on the front .of :said pressing machine frame, a pair of control .handles extending underneath :the front 1 end :of said'tablerpivotally mounted oncsaidx-machine frame and each connected to is pivotally mounted-camarm so that when 'bothhandlesare raised said 'camsmay be coniointly lowered to .dei .press :said .zportion of the control member in vthe Tcrotehbetweenthem to cause flow oi fluid tosaid viluid motor to relativelymovesaid pressing members "to clos d position and when :either handle *is:
raised alo ne' the cam :actuatedwthereby-may functionto knoekthe' outer end of said control memwber laterally to reflect movement thereof 'to'a position permitting :said pressing members to ivot to open position dischargin said fluidfrom said fluid motor.
11.111 :a garment pressing machine, aframe, relatively my; ble pressing members, actuating means-to relatively move said members toa pressing positions and thereafter apply an ironingipressure .includins a fluid motor, means for controlling flow of fluid to said fluid motor including a movable control mfln r normally urged to a position exhausting said fluid motor and.- means; to move said movable control memher to supply fluid tosaid-fluid' motor to cause said fluid moto andactuating mean to'relativethereof to a position permitting said' pressing members to pivot to open ly pivoting said latch to aposition free of the position 1 discharging 5 said fluid from said fluid motor, means normalpivotal movement of said portion of said control member actuated by said actuating means when said pressing members approach their pressing position to free said latch for .the gravity actuated pivotal movement thereof to a position overlying the loweimostposltiongoi' said portion of said controlmember and toabut said portion on Joint release of said handles to retain said memhere in pressing position during the application of ironing pressure while-permitting release of saidhandles. raising of either handlealone -bein; also operative totcause itsrespective cam to knock said portion of said control member laterally free of said latch lwhen in latchedposition to eflect movement thereof'to'a position'permitting said pressing members to pivot to open position discharging tor.
10. In a garment pressing machine, a frame, a table mounted on said frame, relatively movable said. fluid from said fluidlmopressing members, actuating means torelatively move said members to .apressing position and thereafter apply anironingpressure including a fluid. motor, means for controllingthe'flowof fluid means to knock said portion of said control member lateraliy free of said latch when in 65 position permitting said pressing members to 1! move said ress ns members to-pressingposition and ioretain saidmembersin said pressings positionduring the application of said ironing pressure. a latch pivotally mounted onsaid frame weilhted to pivot .by gravityato :an
operative position overlying :a portionfofwsaid movable control member-when ,inactuatingeposition, manually actuated means to depress :said portion of the-.oontrolmember to cause flow-of:
fluid to said-fluid motorjto relatlvelyr'move said pressing members to closed position,-. means normally pivoting said latchstota positiongfree of the pivotal movement a ofsaid portionof saidzcontinl member actuated by said actuating means-when said pressing members approach their pressing position to free saidlatch forrthe gravity actuated pivotal movement thereof to'a position overlying. the lowermost position of said portion ;of
said control'member and to :abut-slid portion on releaseaof said manually operated meanstoretainsaidmembers in pressingposition during the application of ironing pressure, while permitting release of said ,manually operated means, and
.latchedposition to eii'ect movement-thereoftoa [pivot :to' open position discharging the 'fluid "from saidfluid motor.
r12. Ina garment pressing:machine.-a.frame, a
table-mounted onsaid frame, relativelymovable g pressingzmembers, actuatlngsmeans to relatlvely move said members toJaFprcssing position and thereatter apply an ironing pressure including :a
fluid motor. means for controlling the flow of :75 fluid to said fluid motorincluding ,amovable conmit flow to said fluid motor, a
trol member normally urged to a raised position exhausting said fluid motor and means to move I said movable control member to supply fluid to said fluid motor to cause said fluid motor and actuating means to relatively move said pressing able wires connecting said buttons and cams to selectively move said cams so that when both buttons are trol member in the crotch between them to cause flow of fluid to said fluid motor to relatively move said pressing members to closed position and when either button is depressed alone the cam actuated therebymay function to knock the outer end of said control member laterally to effect movement thereof to a position permitting said pressingmembers to pivot to open position discharging said fluid from said fluid motor.
13. In a pressing machine, relatively movable pressing members, actuating means to: relatively move said pressing members to a pressing position and thereafter apply pressure, including a fluid motor, means for controlling the flow of fluid to said fluid motor including a universally mounted control member normally urged to a position exhausting said fluid motor movable to a position to actuate said controlling means to permit flow to said fluid motor, a pair of manually operable means, means actuated by each of said manually operable means to apply an oblique force in a; forward direction to said universally mounted control member, obliquely opposite to the forceapplied by said other means, adapted, when both, manually operable means are actuated together to move said universally mounted control member forwardly to actuate said controlling means to permit flow to said motor; and when one of said manually operable means only is actuated, to move said universally mounted control member obliquely to permit return of, said controlling means to a position exhausting said fluid motor, to separate said pressing members and latch means automatically operative to latch said movable control member in a position actuating said fluid motorwhen said pressing members are brought into pressing juxtaposition to permit release of said manually operable means while said movable control member continues to function to permit further actuation of said fluid motor to apply said pressure, inoperable when a single oblique force applying means has been actuated by its respective manually operable means to knock said universally mounted control memher from said latch means.
14. In a pressing machine, relatively movable pressing members, actuating means to relatively move said pressing-members to a pressing posi tion and thereafter apply pressure, including a fluid motor, means for controlling the flow of fluid to said fluid motor including a universally mounted control member normally urged to a position exhausting said fluid motor movable to a position to actuate said controlling means to perpair of manually operable means, means actuated by each of said manually operable means to apply an oblique force in a forward direction to saiduniversally mounted control member, obliquely opposite to depressed, said cams may be con jointly lowered to depress said portion of the consaid movable control member in a position actuating said fluid motor operative only .on the joint release of said manually operable means after said pressing members have .been brought into pressing juxtaposition on continued joint actuation of both said manually operable means to thereafter permit release of said manually operable means while said movable control member continues to'function to permit further actuation of said fluid motor to apply said pressure, inoperable when a single oblique-force applying means has been actuated by its respective manually operable means to knock said universally mounted control member from said latch means.
15. In a garment pressing machine, relatively movable pressing members, actuating means to relatively move said pressing members to a pressa ing position and thereafter apply an ironing pressure, including a fluid motor, means for controlling the flow of fluid to said fluid motor, including a movable control member and manually actuated means for moving said movable control member to aposition to admit fluid to said fluid motor to relatively move said pressing members to pressing juxtaposition and apply pressure on a. single movement of said manually actuated means, and latch means automatically operative to latch said movable control member in said position only after said pressing members have been brought into pressing juxtaposition to permit release of said manually actuated means while said controlling means continues to function to permit further actuation of said fluid motor to apply said ironing pressure.
l6. Ina garment pressing machine, a frame, a table mounted on said frame, relatively movable pressing members, actuating means to relatively move said members to a pressing position and thereafter apply an ironingpressure including a fluid motor, means for controlling the flow of fluid to said fluid motor including a movable control member normally urged to a raised position exhausting said fluid motor and means to move said movable control member to supply fluid to said fluid motor to cause said fluid motor and actuating means to relatively move said pressing members to pressing position, comprising a pair of cams having downwardly tapering inner edges having overlapping inner ends normally overlying a portion of said control member when in a raised position, each mounted on an arm projecting the front of said pressing machine frame, a pair of control handles extending underneath the front end of said table pivotally mounted on said machine frame and each connected to a pivotally mounted cam arm so that when both handles are raised said cams may be conjointly lowered to depress said portion of the control member in the crotch between them to cause flow of fluid to said fluid motor to relatively move said pressingmembars to closed position and latch means effective to latch said movable control member in depressed position-to permit release of said handles forwardly from and pivotally mounted on.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US364287A US2382322A (en) | 1940-10-28 | 1940-10-28 | Safety control for pressing machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US364287A US2382322A (en) | 1940-10-28 | 1940-10-28 | Safety control for pressing machines |
Publications (1)
Publication Number | Publication Date |
---|---|
US2382322A true US2382322A (en) | 1945-08-14 |
Family
ID=23433842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US364287A Expired - Lifetime US2382322A (en) | 1940-10-28 | 1940-10-28 | Safety control for pressing machines |
Country Status (1)
Country | Link |
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US (1) | US2382322A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2940475A (en) * | 1957-09-30 | 1960-06-14 | Galland Henning Mfg Company | Valve |
DE1256616B (en) * | 1962-05-15 | 1967-12-21 | Hoffman Rheem Maschinen Ges Mi | Ironing press with top plate hinged to a double-armed lever |
US3375598A (en) * | 1965-06-04 | 1968-04-02 | Schultz George | Pressing machine |
-
1940
- 1940-10-28 US US364287A patent/US2382322A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2940475A (en) * | 1957-09-30 | 1960-06-14 | Galland Henning Mfg Company | Valve |
DE1256616B (en) * | 1962-05-15 | 1967-12-21 | Hoffman Rheem Maschinen Ges Mi | Ironing press with top plate hinged to a double-armed lever |
US3375598A (en) * | 1965-06-04 | 1968-04-02 | Schultz George | Pressing machine |
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