US1835254A - Work holding means for pressing machines - Google Patents

Description

l931- E. A. WINNEWISSER 1,835,254

WORK HOLDING MEANS FOR PRESSING MACHINES I Filed Sept. 16, 1929 ZSSheeis-Sheqt 1 INIfENTOR. 27W

ATTORNEYS.

1931. E. A. WINNEWISSER 1,835,254

WORK'HOLDING MEANS FOR PRESSING MACHINES Filed Sept. 16, 1929 3 Sheets-Sheet 2 I N VEN TOR.

am. mm

B Y I A TTORNEY5 9 E. A. WINNEWISSER 1,335,254

WORK HOLDING MEANS FOR PRESSING MACHINES ATTORNEYS,

Patented Dec. 8, 1931 UNITED 'STATES ATE-NT OFFICE EMIL A. wrmmwrssna, OF sYRAcosn, NEW from; ASSIGNOR'TO THE PROSPERITY COMPANY INC., OF SYRACUSE, A CORPORATION OFNEW YORK 7 WORK HOLDING MEANS FOR PR-ESSTN G MACHINES Application filed. Septemb r 6,: 9- serial NQ- 6- This invention relates to garment and laundry pressing machines and has for its object a particularly simple and eflicient Workor tail holding mechanism for. holding the work on the lower p ressingelement or buck. 7 it I I The invention consists in the novel features and inthe combinations and constructions hereinafter setforth and claimed. I v

In describing this invention reference is had tothe accompanying drawings in which like characters represent corresponding.

parts in all the views.

Fig. 1 is a fragmentary side elevation of a pressing machine showingthe work or tail holder mechanism, 1

Fi .1. a

*ig. 3 is a sectional. view, partly diagrammatic, of the power means for actuating the work holder and the controls therefor.

Fig. 4 is a side elevation of apressing machine on a reduced scale provided with my invention.

toward and from the buck, the buck being mounted on the'suitablebolster 3' which in turn is supported on a tableor frame 4,; and p the head 2 being carried by a frame lever 5 pivoted between its ends at 6 to an upright 7 rising from the frame. In the machine here illustrated, the machine is actuated by motor means, andthe motor means, as here shown, is acylinder Shaving a piston 9 therein, the rod'10 of which is connected to the head 2 through suitable motion transmitting-mechanism. This motion transmitting l extending upwardly from the radial arm 24 mechanism, in addition to the-lever 5 includes links 11 and 12 pivoted together at V the rearv arm of the lever 5 and the'pressing machine frame. The link 12 has a forwardly extendingjarm 16 whichis pivoted at'17 to the endof the piston rod 10. The piston 9 is single acting and the press is opened, when the pressure in the cylinder 8 is re, leased, by countersprings l8 and 19. The

Fig. 2 is a front elevation of parts seen in flow of motive fluid to from the cylinder 8 'is controlled in any suitable manner and one form of control will be" hereinafter described. The construction of the press- I mg machine forms no part of this invention.

This invention relates to the work' holder mechanism. I

The work holder comprises a member, as a tape 21, movable from one side of the buck across the face thereof to the other side of the buck, means for moving the work holder from one side of the buck to the otherside thereof and returning it when released to starting position, including a carrier movable from one side of the buck across the same and returnable independently of the work holder, and releasable means on the other side of the buck for coacting with the work holder and'holding it from return movement with the carrier. The. work holder2l is here shown as movable from the rear side of the buck forwardly across the buck,

transversely of the buck to the front side 7 thereof, although obviously, it may be mov- The invention is here shown as applied to a conventionaltype of pressing-machine in 'whichthe cooperating pressing elements are respectively,a buck 1 and a head 2 movable spring upwardly away from the wo-rk'on the buck when the press is opened'and the releasable holding means is released.

22 designates the carrier, this being here. shown. as pivotally mounted at 23 to the frame of the machine below the table on -which the bracket 3 is mounted and below the central part of the buck; that is, it is pivoted V at a considerable distance below the face of the buck, -The carrier comprises a radial arm .24 and an angular arcuate arm 25 at the end of the radial arm, the angular arm 25 in position to -rnove across the faceof the buck land it is normally arranged with its end at therear of the buck 1. The tape 21 extends along the arms 24, 25 and preferably .these arms are tubular and the tape extends through said arms and is provided with a head 26 atits advance. end which normally thrusts against the front end of the arm 25, orin other words, a shoulder 27 is provided at the front end of the arm against which the head 26 is normally held.

Means is provided for returning or holding the tape 21 with its head 26 against the shoulder 27 and this means is here shown a reel 28 located in the case 29 carried by the arm 24 and on which the tape winds, the reel being actuated by a spring 30. The reel and its casing is located on the opposite side of the pivot 23 to that on which the major part of the radial arm 2A is located. The pivot 23 is a stud mounted in a laterally ex tending boss or hub 31 (Fig. 2) on the arm 2 1 and is fixed in abearing formed in a bracket projecting laterally from. a legof the f 'ame at. A segment 33 is mounted on said hub 31 to rotate therewith, this forming part of the motion transmitting means between the carrier 22 and the carrier for the releasable holding means to be presently described.

The carrier 22, in this embodiment of my invention, is power actuated as by a cylinder 34 having a piston 35 therein, the rod 36 of which is connected to a radial arm 37 on the hub 31, this radial arm being integral with the segment 33. The cylinder is pivotally mounted in a ball-and-socket oint at 38 in order tohave an oscillating movement. The piston 35 is single acting and the carrier 22 is returned to its starting position when the pressure in the cylinder 31 is released by a returning spring 39.

The releasable holding means for holding the tape across thebuek 1 after it has been carried across the buck by the carrier 22 is here illustrated as a latch 10 mounted on a movable carrier 11 which is connected to the carrier 22 by connections which permit move ment of the carrier 11 upwardly in a position adjacent the forward edge of the buck when the carrier 22 is being actuated to move forwardly across the buck, and which permits the carrier22 to return to its starting position independently ofthe carrierl. The latch 410 is shown as pivoted at 42 to the carrier and as coacting with a jaw 13 rigid with the carrier. The latch has a pinch handle ,l-i: arranged in juXta-position to a handle 15 on the jaw The latch coacts with the book 46 provided onv the head 26 of the tape 21. The carrier 41 has a hub 17 pivoted on a stud 48 which is mounted in a bearing 48a carried by the goose neck or bracket 3 under one end of the buck. It is normally located in the position shown in full lines, Fig. 1, and is movable into the dotted line position, Fig. 1, where the latch is adjacent the front edge of the buck. As before stated the carrier 11 is actuated through connections between it and the carrier 22. These connections comprise a link 49 pivoted at one end at 50 to an arm 51 on the carrier 11 and having a pin 52 at its other end located in a slot 53 formed in the segment plate 33. 'This pin 52 and slot 53 constitute a lost motion connection. The movement of the carrier 41 into its operative position is limited by an adjustable stop 54, here shown as a set screw threading through a stationary bracket 55 mounted on the stud 18 and coacting with the stop shoulder 56 onthe carrier 11. The link 19 is composed of two sections, one telescoping within the other, the telescoping movement being resisted by a spring 57 which permits ayielding movement when the shoulder 56 engages the stop 54:. The link 19 also includes a cushioning spring 58 for relieving the carrier 41 of shock when the carrier 22 returns to its starting position and the carrier 41 remains in its operated position One section 19a of the link 49 is tubular and pivoted to the arm 51 of the carrier a1, and the other section 49?) is a rod eX- tending axially into the tubular section and provided with the pin or follower 52 working in the slot 53. The spring 57 encircles the rod 49.7) and thrusts against a head 190 on the rod and against a shoulder 49d at the lower end of the section 19a. The buffer spring 58 is located between the head 490 on the rod 49?) and a head 4-90 in the upper end of the section 4966. 4

In operation, when motive fluid, as compressed air, is admitted to the cylinder 34, the carrier 22 moves upwardly, so that the J arcuate arm 25 moves overthe face of the buck 1 into the dotted line position, Fig. 1 and is spaced apart from the face of the buck, the areuate arm 25 carrying the head 26 of the tape 21. During this movement of the carrier 22, the carrier 11 is moved upwardly by the link 19 and carries the latch 10'to its dotted line position, Fig. 1, where it receives the hook 41-6 of the head 26 of the tape 21 when the pressure in the cylinder 31- is released'the carrier returns to its starting position without transmitting return motion to the carrier {11, this action being due to the lost motion connection provided by the pin 52 operating in the slot 53. During this return moven'ient of the carrier 22 to starting position the tape 21 will unwind from the reel 28 and tension the spring 30. The press is then closed and when the pressing operation is eom'pleteth'the press is opened and the latch 10 is "released by pinching the handles 44 and 15 to release the hook 46 when the hook 16 is released the spring 30 of the reel 28 reacts and returns the tape 21 to its starting position. As the tape 21 is resilient it springs upwardly away from the buck and does not wipe over the work during its return movement lVhen the latch 40 is released the carrier 41 moves by gravity to its start ng position.

The means for controlling the flow of motive fluidwill now be described, although this means forms no part of this invention. The means for controlling the flow of air to the cylinder 8 c'omprisesa valve casing 61 havvalve 62 and a normally open exhaust valve 63 therein which are connected by astem 6 1 so that they act asa unit, and means for operating thevalves. The intake end of the cask ing 61 is connected to a feed pipe 65 through a valve 66 andfpipe 67, the function of thisvalve will be hereinafter setv forth; The

valve casing is connectedfrom a -p'oint be tween the'valves 62, 63 tothe cylinder 8 through a pipe 68 which communicates with a coupling 69 opening into the intake port 70 at the upper end of the cylinder 8. The valves and 62 and. 63ers operated by a push button 71, the motion of which is transmitted through a lever 72 acting on an inter mediate lever 73 which thrusts against a stem 74 of the exhaust valve 63. The move- I ment of the push button 71 is a gainst'th-e ac tion of a returning spring 75. Not consider thrusts against the intermediate lever 73.

The pressure side of the diaphragm chamber 77 18 connected by a pipe '79 to a coupling 80 on a pqnetllwlnch coinn'iunicates with a cas 'eav' t1 t" 1 b t ms (,2 on ie site 01 me cy 13c 11', no casin 82 opening into the cylinder through a port The portSB is located in'position so that it will be passed'by the piston 9 when the pis ton approaches the end of its powerstroke. hen the port 83 is thus. uncovered bythe piston 9 air will pass from the cylinder 8 through the pipes 79 and '81 to the diaphragm chamber 7 7 to actuate the diaphragm 76 therein and hence lock the valves 62 and 63 in their operated position. 7

To open the press. the air is'released from the diaphragm chamber 77 by opening a normally'closcd spring pressed exhaust valve 84 located in a valve casing 85 which is con nected by pipes 86 to the pipe 7901 any pipe communicatingwith the pressure side of the diaphragm,chamber 77, The exhaust. valve 84-. is ooerated b. a trio lever 88 rouped with l l b n the push button 71. v r

In order to require both haudsof the operator to be used in closing the press, a second push button89 is employed which through levers 90 and 91 acts on the stem 92 of a nor mally open exhaust valve 93 located in a casingQ-l which isconnected by a pipe 95 to the coupling 69 at the" intake end ofthe cylinder 8; The exhaust valve 93 is locked in its operated position by a diaphragm 96ina mg anormally closed spring pressed intake diaphragm chamber 97, the pressure side of which lS CODHGCtBClbyiL pipe 98120 the coupling 80. The diaphragn1 96 acts on a sliding stem 99 which thrusts against the inter-,

mediate lever 91. i e 7 Obviously, it only the button 71 is depressedythe air instead of passing to the cylinder,. will pass out through the pipe 95 and exhaust valve casing 94; and if the push button 89 only is depressed no air at all will flow as the intake valve 62 will be closed. Hence; both push buttons mustbe depressed in order to obtain etfectiveair flow to th e'cylinder 8 and must be held depressed until the piston 9 passes the port 83.1 The pressure side of the diaphragm chamber 97 is connected to the pipe 86the outlet 'of which is controlled by the valve 84 operated by'the trip lever 88 so that when the triplever 88 isoperated'the air exhausts from both diaphragm chambers 77 and 97 and permits the valves in bothcasings :61 and 94: to return to their starting position.

' The flow of air to the cylinder '34 which actu'ates the workholder carrier 22 is con trolled by avalve casing 101 having a normally closed spring pressed intake valve 102 and anoi'inally open exhaust valve 103 therein, which are connected by a stemi104 so that theyoperate as a unit. The intakeend of the valve. casing 101 isconnected to the intake pipe 65 through pipe 105, valve 106 and pipe 107. The functionof the valve 106' is to be hereinafter described. The valve casing 101 is connected froma point between the valves 102 and 103'bya pipe 108 to a coupling 109 communicating with the intake port 110 of the cylinder 84;the valves'102 and 103 are locked in their operated. position by a dia phragm 111 in a diaphragm chamber 112 V which is connected to the interior of the'valve casing 101 by a duet 118a." The diaphragm 111 acts upona sliding stem 114 which thrusts against an intermediate lever 115 corresspending to the levers 73 and 91. This lever is actuated by a push button 116 through the lever 117 which acts on the intermediate lever 115 against the action of .a returning spring 118. The air isexhausted from the diaphragm chamber by anorm ally closed spring pressed release valve 119 in a valve casing 120'whicl1 is connected by a pipe 121 to a pipe 122 communicating with the pressure side of the diaphragmchamber 112. The valve 119 is operated by a trip lever 113; The'air is also exhausted automatically from the diaphragm chamber 112 aswill be presently described. The valve construction forms no part of this invention. =The valves 66 and 106 are for thepurpose of preventing the operation of the work holder when the press is closed or for preventing the simultaneous operation' of the work holder and the press head. This feature forms thesubject matter of another application;

The valve 66 includes a casing 'having a I diaphragm 126 therein, dividing it into two chambers 127 and 128, a valve 129 in the chamber 127 is normally held off its seat by a spring 130 and the chamber 127 below the valve is connected by a pipe 131 to the feed pipe 65. The chamber 127 also communicates with the pipe 67 and the chamber 128 is connected by a pipe 132 to the pipe 108 lead ing to the cylinder 34.

The valve 106 is of similar construction and has a diaphram 133, lower and upper chambers 134 and 135, and a normally open spring pressed valve 136 in the chamber 134. Chamber 134 is connected below the valve 136 to the intake pipe by the pipe 105 and the pipe 10'? leads from the chamber 134 at a point on the other side of the valve 136 of the casing 101. Chamber 135 is connected by a pipe 138 to pipe 63 leading to the cylinder 8.

In operation, when the push buttons 71 and 89 are depressed to close the press head, that is, to admit air to the cylinder 8, the air flows from feed pipe 65, through pipe 131, through chamber 127 of valve 66, through pipe 67 as the valve 1.29 is held open by its spring 130, thence through valve casing 62, and pipe 68, to the cylinder 8 to actuate the piston therein. At the same time air flows from the pipe 68 through the pipe 138 to the upper chamber 135 of the valve 106 actuating the diaphragm 33 therein to close valve head 136 against its spring, so that if the push button 116 which controls the actuation of the work holder carrier 22 is depressed no air will pass to the valve casing 101 and cylinder 34, as the valve 136 is held closed. Likewise, if the buttons 71 and 89 are depressed while the carrier 22 is extended across the buck 1, no air will pass to the cylinder 8, as upon depression of the push button 116 air passes from the feed line 65, through pipe 105 to valve 106, the valve 136 being open, pipe 107, valve casing 101, and pipe 108 to the cylinder 34 and at the same time passes from pipe 108 through pipe 132 to the chamber 128 of the valve 66 to actuate the diaphragm 126 to hold the valve 120 closed.

Preferably, means is provided for automatically releasing the air from the cylinder 34 when the work holder carrier 22 has carried the head 26 of the tape 21 into engage ment with the latch 40. As here illustrated, a normally closed spring pressed release valve 141 is located in a valve casing 142 carried by the frame. The casing 142 is connected by a pipe 143 and pipe 122 to the pressure side of the diaphragm chamber 112 which locks the valves controlling the flow of air to and from the cylinder 34 in their operated position. The release valve 141 is operated by a lever 144 having an engaging on d 145 located in the path of a shoulder 146 (see Figure 1) on the radial arm 24 of the carrier 22, in position to be engaged as the carrier 22 approaches the limit of its stroke or when it approaches its position occupied when the latch 40 engages the hook 46 at the end of the tape 21.

Upon depression of push button 116, obviously, air will be admitted to the cylinder so that the carrier 22 is actuated to carry the tape across the buck until the hook 46 is engaged by the latch 40, at which time the shoulder 146 engages the trip lever 144 and operates the release valve 141 permitting air to exhaust from the diaphragm chamber 112, and the valves 102 and 103 to return to their starting position and hence the air to exhaust out of the cylinder 34 back through the pipe 103 and valve casing 101 past the exhaust valve 103. The release valve 119 provides for a quick exhaust of air from the cylinder 34 in the event the operator changes his mind :1" out working the work holder before the work holder has traveled its full. distance and carried the hook 46 into engagement with the latch 40. For instance, assuming that the operator starts the work holder in motion by depressing the push button 116 and then immediately changes his mind, he will then. operate tl trip lever 113 which. is grouped with the push button 116, and thus will not wait until the carriers 22 and 41 complete their movement after which it would be necessary to release the tape 21 by operating the pinch handle 44.

Insofar this invention is concerned, the pipe 108 may couple directly with the coupling 109 at the intake end of the cylinder 34 as shown in the diagrammatic View, Fig. 3. But in reality it is coupled to a valve casing 149, Figs. 1 and 2, which restrains a full or sudden flow of air to the cylinder to suddenly actuate the piston and the work holder, but permits a rapid exhaust of air from the cylinder. This check valve and its function forms no part of this invention and the valve is shown in application of Ernest Davis, 228,- 041, tiled October 22, 1927.

What I claim is:

1. In a garment or laundry pressing machine in combination a frame; a buck mounted on the frame; a work holder movable across the buck; a movable carrier coupled with the work holder when said carrier is operated in one direction, to move the work holder across the buck; and releasable means to hold the work holder in position across the face of the buck during movement of the carrier back to starting position.

2. In a garment or laundry pressing machine in combination a frame; a buck mounted on the frame; a work holder normally arranged at one side of the buck and movable across the buck; a movable carrier coupled with the work holder when sa d carrier is operated in one direction, to move the work holder across the buck; releasable means to hold the work holder in position across the face of the buck during move- :position'below the level of the working face of the buck in an arc across and above the working face. of the buck; means to couple the work holder and the movable carrier during such movement of the carrier across the buck; releasable means on the other side of the buck to receive the work holder during the return movement of the carrier back to starting position; a mounting for the releasable means below. the level of the working face of the buck, all wherebythe work holder is held offthe face of the buck during forward movement of the carrier and pressed against the work on the buck during the return movement of the carrier.

4Q In a garment or laundry pressing machine incombination a frame; a buck mounted on the frame; a flexible and resilient work holdermovable across the face of the buck from one side of the buck and tensioned, when in operated position, to spring upward ly from the work when released; a rigid carrier mounted for movement from a starting position below the level of the working face of the buck in an arc across and above the working face of the buck; means to actuate the carrier; means tocouple the work holder and the movable carrier during the'movement of the carrier across the buck; releasable meanson the other side of the buck to receive the work holder, and hold said work holder during the return movement of the carrier back to startingpo-sition; a mounting for the releasable means below the level of the working face of the buck, all whereby the work holder is held off the'face of thebuck during forward movement of the carrier and pressed against the work on the buck during the return movement of the carrier.

5. In a garment or laundry pressing machine in combination a frame; a buck mounted on the frame; a flexible and resilient work holder movable across the face of the buck; a rigid carrier mounted for movement from a startmg position below the level of the working face of the buck in an arc across and abovethe working face ofthe buck; contact means between the work holder and the movleasable means being located below the level of the wqrking face of the buck, all wherebi the work holderis:pressediagainstthe wor on the" the return movement of V theea rrier I V A p ."In a pressing machine, a frame, a buck mounted onjthe frame, a workholder nor- H llya ngedatione side of the buck and cmpris g a iiex ible resilient tape having at itsadvance end, a carrier movable across the faceof the buck and having a shouldercoactizigwith thehead, means tending piill the head against the shoulder, the 613a fasting against said head to carry pea r the buck andbeingjreturnable H g- "position independently of the a tape, andreleasable means for coacting with said head and holding thetapefrom return movementwith the carrier. p

a In a pressing machine, aframe, a buck mounted on .the. frame, a, work holderfnon maily a: comprisingfa flexible resilient tape having a h'ea atitsadvance end, carriermovable acrossitlie faceof the buck and having a shouldercoacting with the head, means tendlig a carrier thr sting against saidI h-ad to carry thetapefacrossthe buck, the carrier being returnable to its starting position independently ofthe tape, andreleasable means for h h aged atjone sideof thebuck and till'thelleadagains t the shoulder, the

coacting ivithsaid head and holding the tape from return 'nio'vement with the carrier, the carrier 'beingtubular an'dtthe tape extending through th'e tubular carrier, and means acting on the. tape ,tofreturn the'tape 'iwhen released to its starting position in which the head is engaged with the shoulder on the carrierf fl 8; In a' pressing machine,"a frame, a buck .mountedon the frame, a work holder comprising a. tape movable across the face of the buck, a carrier pivoted to the framebelow the buck and compr'lslngla radial arm and an angular arm, the latter being movable across the face ofthe buck," the tape extending 'carifijer and havi'ng ahead at its advance end .engagingtheend of the'angnlar arm, means acting on the tape tendingto hold thehead in engagement withthe end ofthe angular arm andreleasablemeans located on the'opposite side of the buck to that on which the; angular-arm is located, for engaging the head "and holding thetape fromreturn movement fwith the "ca rrier.r i 91inapressinginaehine aframe, a buck nountedon'the frame, a workholder comprising a tape membermovable across the face of the buck, a tubular CEtIllefPlVOtGCl to. the frame belowthelbiick andc'o'mprising a ,fr'adial and an angular arm, the latter being movable across the face of the buck, the

tape extendingthrough the'arms of the tubular carrier'a'ndliaving a head at its advance end engaging the end of the angular arm,

means associated with the carrier tending to I pull the tape With its head against the end of the angular arm and releasable means located on the opposite side of the buck to that on which the angular arm is located for engaging the head and holding the tape from return movement with the carrier.

10. In a pressing machine, a frame, a buck mounted on the frame, a Work holder nor mally arranged at one side of the buck, a carrier for moving the Work holder from one side of the buck across the face of the buck to the other side thereof, said carrier being returnable to its starting position independently of the Work holder, releasable means for holding the work holder in its position across the face of the buck during the return movement of the carrier, a second movable carrier for the releasable means and means connecting the carriers including a lost motion connection whereby the carriers move in unison into operative position but the first carrier is movable away from operative position Without moving the second carrier.

11. In a pressing machine, a frame, a buck mounted on the frame, a Work holder normally arranged at on side of the buck, a carrier for moving the Work holder from one side of the buck across the face of the buck to the other side thereof, said carrier being returnable to its starting position independently of the Work holder, a releasable means for holdng the Work holder in its position across the face of the buck during the return movement of the carrier, a second movable carrier for the releasable means, and connections between the carriers Whereby they move in unison from starting position.

12. In a pressing machine, a frame, a buck mounted on the frame, a Work holder normally arranged at one side of the buck, a carrier for moving the Work holder from one side of the buck across the face of the buck to the other side thereof, said carrier being returnable to its starting position independently of the Work holder, releasable means for holding the Work holder in its position across the face of the buck during the return movement of the carrier, a second carrier for the releasable means, connections between the carrier whereby they move in unison from starting position, said connecting means comprising a lost motion connection permitting the first carrier to return to its starting position independently of the second carrier.

In testimony whereof, I have hereunto signed my name, at Syracuse, in the county of Onondaga, and State of New York, thls 10th day of September, 1929.

EMIL A. WVINNEWISSER.

CERTIFICATE OF GORREGTION.

Patent No. 1,835,254. Granted December 8, 1931, to

EMIL A. WINNEWISSER.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1, line 76, after the word "buck" strike out the comma and woids the arcuate arm 25 carrying the head" and insert instead a period and the Words The Work holder is preferably a flat; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 9th day of February, A. D. 1932.

M. J. Moore, (Seal) Acting Commissioner of Patents.

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