US1975849A - Press - Google Patents

Description

j Oct, 9, 1934.

- R. 'J. JAcKER PRESS 2 Sheets-Sheet 1 Filed ,Dc. 22, '1950 m? m m m W M M M m Patented Oct. 9, 1934 UNITED STA PRESS Richard I. Jacker, Cincinnati, Ohio, assignor to The American Laundry Machinery Company, Cincinnati, Ohio, a corporation of Ohio 7 Application December 22,1930, Serial No. 504,007

3 Claims.

My invention relates to pressing machines and, particularly to operating mechanism for a pressing machine including a work supporting bed and a head movable into cooperative relation there- 5 with to bring about a pressing action.

In presses of this type, the pressing head is normally separated a sufficient distance from the work supporting bed so that work may be conveniently placed thereon or removed therefrom and with sufiicient space between the pressing head and work supporting bed to permit clear visibility of the pressing bed or the work thereon when the bed and head are out of cooperative relation and the machine is not in operation.

The actual pressing action in a press of the type disclosed by my invention takes place at the final movement of the pressing head to exert pressure on the pressing bed after it has been moved into cooperative relation therewith at any desired speed and it is at this period of the operation that the actual high pressure is applied, the greater part of the movement of the head requiring only sufficient movingforce'to overcome he force exerted by springs or other means employed to return the head to its open unoperated position at the end of a pressing operation.

I One object of my'inventionis to provide an operating mechanism for a pressing machine of the above type wherein the initial moving force for moving the head into cooperative relation with the work supporting bed is relatively small which permits the employment of manual means without diminishing the speedof operation of the press and takes place only a comparatively short as length' of time hich is conducive to relatively short operation of the manual operating means, for instance a short throw of a lever, yet the head of the press will be moved through the usual long are about a pivot andbe forced to itsfinal position'under a. very :high pressure. Thu'sa quick operating :press maybe provided without necessitating what is termed as a full automatic operating means; 1 1 V Another 'object of my invention is to provide an operatingmechanism whereby a very small movement of the-part which causes the initial operation or pressing engagement of the head with the bed, for instance a foot pedal and lever,

will .give

simple and durable device which will permit economy of force required in producing the desired results .both as relate to initial engagement of thepressing members and the final pressure or. squeeze between the members the desired result and t'or'provide' a TES PATENT OFFICE j during which last action the actual pressing operation takes place. Various'other objects and tures of my invention will be ing description and one embodiment thereof may be seen in the accompanying advantageous feaseen in the followdrawings wherein similar characters of reference designate corresponding parts, and wherein:

tion; Fig. 2 is a similar view Fig. 1 is a side elevation,'partly in section, of

showing the head down against the buck or pressing bed in'operated position; and Figs. 3 and 4 are views showing the motor control valve in detail.

Referring to the drawings,

70 I have shown one embodiment'of my invention as comprising a buck 1 which, as usual, is rigidly secured on top of a standard or frame'2 provided with rearwardly and upwardly extending supports 3 having a cross shaft 4 secured to the upper ends thereof. A hub 5 having four radiating arms 6, ally mounted on the shaft 4,

7, 8 and 9 is pivotthe arms 7 and 8 being bifurcated to avoid interference with centrally located operating mechanism and to add The usual pressure or pressing rigidity thereto.

head 10is mounted on the extremity of the arm 6 in suchposition that the lower surface of the pressure or pressing head will registerwith the the buck 1 when the head is in inclined top of its lowered or closed position as shown in Fig. 2

It will'be noted that the arm 9'is'substantial- 1y shorter than the arms 6, fl acting :only as a support for 'over balances the 'weight of 7 and 8, the arm a weight 11 which the head 10 and tends'to move it to open' position, and is forked at its outer. end whereby it otally mounted 'or a substantially v vertically therein, the block being supported betweenthe may receive 'a -pivblock "12 having a perforation extending opening 'prongs 13 offthe forked end of the arm. Likewise, it will v I} "stantially longer than either] '9 and have'a 'to their freeends as at 15.

the links 14 are, n turn,

be noted that thearms 8 are subof the arms 6 or pair of links 14 pivotally connected The other ends of pivotally connected to the-free end ofan arm 16 as atl'l and the other end of the arm 16 is, in"turn,-pivotally connected'as at 18 to the lower As will be clearly apparent, one-halfof a toggle structure while ;the arm 16 part of the frame 2.

the links 14 form 195 forms the other half of the same toggle which is disposed'between a point on the frame 2 'and the free'end of the relatively long arms 8 and the arrangement of the parts is 1 such that or pressing head 10 as will be clearly seen in Fig. 2. This is due, primarily, to the mechanical advantage of the toggle.

The operating means for moving the pressur or pressing head 10 into initialengagement with the padded bed or buck 1 consists, in this instance, of a foot treadle or lever 19 pivotally mounted on the frame 2 as, at 20 and having a link 21 pivotally connected thereto as at 22 and to the short arm 9, the link 21 extending upwardly through the opening in the block 12 and having a spring 22 disposed between a nut 23 on the upper end. thereof .on. the upper side of'the arm. With this construction, tocause initial engagement of the pressing head and the pressing bed, the foot treadle 19 is moved downwardly which will. move the arm 9, arm 6, and head 10 carried thereby downwardlyand this downward movement is more or less resilient due to the spring interposed between the upper surface of the. arm 9 and the nut 23011 the rod 21 whereby there willv be. no breakage of parts should some foreign material be disposed on the pressing bed or buck 1. Such downward movement of the pressing head 10 willresult in movement of the arm 8 outwardly',to. the right as shown in the drawings. and cause a' substantial straightening of. the toggle consisting ofthe links. 14 and arms. 16. as will be apparent from Fig. 2. which willbring an extension 2 i of the arm 16 beneath the lower endof a piston rod. 25 that forms a part ofa cylinder and piston construction including a. cylinder 26 and piston 27, the cylinder 26. being secured on theirame 2 andv a spring 28 being provided to normally maintain the piston 27 in its. uppermostposition. l

In the operation of this apparatus, assuming the pressure orlpres'sing head 10. to. be in opened or unoperatedposition as shown in. Fig. 1,. a garment is. placed on the pressing bed or buck 1 with the proper lay, the; inclination of the pressing bed-or buck being. such astoi permit 7 ready visibility of the upper surfaces of. the buck onthe work. thereon when the pressing head 10 is. disposed-but a short distance thereab'ove and a shield 29. being provided. to prevent the garment. from contacting with any of the operating mechanism, and. pressure is exerted onthe foot treadle. and. lever construction 19 which will cause downward movement of the. pressing head 10. into engagement with the pressing bed ashereinbetore described and move; the extension 24 of the arm 16 beneath the piston rod. 25 whereby downward movement of thepiston will cause. further straightening ofi the toggle mechanismlconsist's ing. of the links l t-and arms 16 and. pressureto be: exerted. between the. pressuregheadf 1.0 andthe pressing. be d l. Vifiththis construction, a. large degree at-movement of. the head 10*. will be brought about. by a small degree of movement of the. arm

9 due to the lengthratio between the. short arm 9- and the headarm 6.

Such. downward: movement of the: pressure or pressing head Q by operation ot the 3 foot. treadle and lever mechanism 19 :anddownward'movement of the link 21 will cause a lug 30 carried by the link 21 to contact with the operating arm of a fluid pressure valve 32 and open such valve whereby fluid pressure will be admitted to the piston and cylinder construction previously described through the fluid pressure conduit 33 whereby the piston 2'7 and piston rod 25 will be moved downwardly, the piston rod. 25 contacting with the extension 24 on the arm 16 as shown in Fig.2 to further straighten the toggle and bring about relatively great pressure between the pressing head 10 and the pressing bed 1. In the preferred arrangement of parts, the lug 30 does not cause opening of the fluid pressure valve 32 on its initial downward movement although such action may take place if desired. Instead, the pressing head 10 is brought into initial engagement with the pressing bed 1 prior toopening of the fluid pressure valve 32 and then the link 21 is moved slightly further downwardly by further pressure on the foot treadle and lever mechanism 19 to bring about opening of the valve 32, this action being, or" course, against the resistance of the spring 22. After the pressing operation is completed, the. foot treadle and lever mechanism is relieved of pressure whereupon it will be moved upwardly under the action of the spring 22 releasing the operating arm of the'fiuid pressure valve 32 from the lug 30 due to upward movement of the link 21 whereupon the fluid pressure valve may be closed by any suitable means, in this instance, a spring, not shown, and the piston 27 may be moved upwardly by the action ofthe spring 28. Of course, suitable means must be provided for exhausting the fluid pressure from above the piston 27. Pressure being released from above the piston 27 the pressing head '10 and all or the operating parts are returned to their normalv unoperated position by the springs 22 and 28 and the weight 11'.

Referring to the drawings and the preceding description, it will be seen that Ihave provided a machine embodying numerous novel and advantageous features. For instance, I'have' provideda pressing machine embodying operating mechanism such that the pressure or pressing head may be moved into initial engagement or cooperative relation with the pressing bed or buck by manual means and with the expenditure of very little .force as well as by relatively small movement of the operating parts together with 5 its head with. the expenditure of very little force and movement of the operating parts through a ii relatively short distance, the manual operating means being effective to set the fluid pressure or automatic operatingmeans in operation.-'- This 'is' primarily accomplished by the useof a plurality of arms and links whose length natid is such as to cause a large degree of. movement; of

one arm or link by a relatively small" movement of another arm or link or a system. of arms and linkswhereirr a'rela-tivelyzsmall force and small amountof .movement of one arm or'li-nk. will cause a relatively great force .to be exertedlby an arm or link moved thereby, Ifhus, very little force need be. expended to. causefa relatively great movement of the operating parts and a large amount of pressure, between. the pressing elernents, the. last named. pressure being what is commonly termed as. the final pressure or squeeze and. that. period oftime'wh'en the actual pressing operation takes place.

Another 'novel' and advantageous feature of ies my invention resides in the fact that I have provided a pressing machine embodying a work receiving bed that is inclined at an angle from the horizontal and has its uppermost edge in the same horizontal plane as the pivot of the pressing head supporting arm, a pressing head normally in separated or full open position, and operating mechanism for moving the head into pressing relation with the bed and causing a final pressure or squeeze therebetween consisting of partly manually operated means and partly fluid pressure or automatic operating means, the manually operating means being efiective during its operation to bring about operation of the auto-, matic or fluid pressure means. Thus, I have provided a mechanism in which the means for causing the final pressure or squeeze between the pressing head and the pressing bed is entirely dependent on the operation of the mechanism for causing initial engagement of the head and bed, which mechanism is manually operated while the mechanism for causing the final pressure or squeeze is an automatic or fluid pressure operating mechanism.

What I claim is:

1. A pressing machine, comprising a head and a bed normally in separated or full open position, operating mechanism for moving said head into initial engagement with said bed and for producing final pressing pressure therebetween, including a toggle operatively connected to said head and normally ineffective as a part of the head moving means, a motor means normally having no operative connection with said toggle, operator-operated means having a yielding connection with said head for moving said head into initial engagement with said bed, means for effecting an operative connection between said motor means and said toggle by movement of said head into initial engagement with said bed, and means for controlling the operation of said motor means by said same head movement.

2. A pressing machine, comprising a head and.

a bed normally in separated or full open position, said head being carried by a pivotally mounted arm, operating mechanism for moving said head and bed into closed position and for producing final pressure therebetween including a motor means normally having no connection with said head, a pluralty of head moving arms of difierent lengths operatively connected with said head carrying arm, operator-operated means having a direct connection with the shorter of said head moving arms for moving said head and bed to closed position, a toggle connected to a longer of the head moving arms and normally ineffective as a part of the head moving means, means for efiecting an operative connection between said motor means and said toggle by movement of said head and bed into closed position, and means for controlling operation of said motor means by said same head movement.

3. A pressing machine, comprising a head and a bed, and means for moving said head into engagement with said bed and producing final pressing pressure therebetween, including a motor means, a plurality of pivotally mounted integral arms including a head carrying arm and head moving arms of difierent lengths, all of said arms having their axis of movement about the same point, operator-operated means having a connection with the shorter of the head moving arms for moving said head into initial engagement with said bed, said motor means normally having no connection with the head moving arms, means for effecting an operative connection between the longer of the head moving arms and said motor means by movement of the head into initial engagement with the bed whereby the last named head moving arm may be actuated by said motor means to produce final pressing pressure between said head and bed, and means for controlling operation of said motor means by movement of the parts to bring said head and bed into initial engagement.

RICHARD J. J ACKER.

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