US1745789A - Garment-pressing machine - Google Patents

Description

Patented Feb. 4, 1930 UNITED STATES PATENT OFFICE PETER EDUARD GELDHOF, OF SYRACUSE, NEW YORK, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO UNITED STATES HOFFMAN MACHINERY CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE GABMENT-PBESSIN G MACHINE Application filed July 15, 1920, Serial No. 896,505. Renewed December 23, 1925. I

This invention relates to garment pressing machinery and especially to mechanisms for working the press lever and pressing head of machines of thisclass. More particularly the 6 invention relates to a cam operated toggle for resses. P One ofthe main objects of this invention is to produce operating mechanism which exerts great power on the press lever to close the pressing head under high pressure on the garment.

The operating mechanism comprising t h1s invention is adaptable for use in connection with such machines as disclosed in the United States Palmer Patent 1,141,900 and Spencer Patent 1,164,616. One patent shows a straight link used to work the pressdever from a foot lever and the other shows a toggle for this .same purpose; My invention comprises means for use on both classes of machines whereby the leverage and power for closing the press head is greatly increased over that shown in the two above types of patented machines.

A garment press operating mechamsm constructed in accordance with the plans of this invention, comprises the usual form of press lever worked by a foot lever, and a link or toggle being interposed between the press lever and foot lever for closing the pressing head on the garment to be treated and pressed. An adjustable device is so related with the foot lever and toggle that the power exerted by the operator on the foot lever is greatly increased and transmitted upwardly thru the toggle to the press lever The accompanying drawing illustrates a conventional garment pressing machine in side elevation showing the parts comprising my invention embodied in the machine.

ile I am aware that it is old to employ adouble set of toggles, such as shown, for opening and closing the press, I claim it to be new to use a cam leverage system, or

cam operated toggle, in connection with the double toggle set, to greatly increase the pressure exerted on a garment press head.

Furthermore, by reason of the toggle leverage as shown and as hereinafter more fully I described, a wide opening movementof the head is produced closing operation.

In presenting a more detailed disclosure of this invention, reference is had to the accompanying-drawings wherein a frame 5 is shown having a press lever 6 fulcrumed thereon. The press lever 6 carries the usual type of pressing head 7 on one end and an app priate toggle or'link on the other end; and in this instance the toggle comprises pivotally joined parts 8 and 9, the upper member 8 of which is fulcrumed to the back end of the press lever, and the lower member 9 of the toggle being movable supported on apower device as later described.

lifting cam 12 is pivotally supported at 13 on the frame 5, and has a cam face 14 made thereon. This member 12 is in effect a lever, one end of which is pivoted on the press frame while the other end has the underneath arcuate face forming the cam 14, being a cam in relation to the roller 22 by virtue of the slight eccentricity of the are 14 to the pivot center 19. The lower toggle member 9 is pivotally attached at 16 to the lifting cam 12 which in effect forms a thrust sustaining member for the toggle.

A foot lever 18 is pivoted at 19 on the frame of the machine with the front end prowith a rapid and powerful jecting from the frame so as to be accessible to an operator. A roller carrier 20 is pivoted on the pin 19 and is therefore adapted to concentric operation with the foot lever 18. This roller carrier 20 is supported on the pin 19 and may be confined between the forked end of the foot lever, so that the lower end of the roller carrier is directly under an adjustment screw21 which is screwed into the foot lever and set up tightly against the member 20-. The upper end of the roller carrier is provided with a roller 22 worln'ng against the cam 14. A closing toggle comprising links 24 and 25 have their adjacent ends pivotally joined together; and the back end of the toggle link 24 is pivotally attached to the member 9, while the front toggle link 25 is pivotally attached to the frame of the machine. A link 26 connects the closing toggle 2425 with the foot lever 18 thereby a foot lever and press lever.

establishing a working relation between the Inasmuch as the lower end of the pressure I toggle 8-1-9 is supported on the short lift lever 12, it is only possible to cause a relatively short ,upward movement thru this toggle to the press lever 6, and this movement, tho

slow,

is adapted to transmit great force due to the high leverage ratio obtained with the long foot lever 18 and'relatively short armed member 20. The toggle 2425 is used to gain the necessaryand considerable pivotal move- 7'high above the garment being pressed. The

closing of the pressing head 7 is efiec'ted by .jthrusting downv on the foot lever.

' The operation of the mechanism is such that the roller 22 travels upwardly along the cam face 14, greatly increasing in pressure thereagainst which slowly moves the lift member 12 upwardly, thereby transmitting A a-high thrust'thru the straighte'ned toggle 89 which acts with great force on the press lever 6, and hence down forcibly on the press head 7 It is seen therefore that the toggle 2425 is used for closing the pressing head, while the cam mechanism through toggle 8-9 is employed to p oduce the final pressure on the head. By reason of the fact that a short upper link 8 is employed in conjunction with the rear or main closing toggle comprising the members 8' and 9, a wide opening movement of the head is produced and for the further reason that the transverse toggle, or more specifically the member 24 thereof, is connected to the lower toggle element 9- of the main closing toggle adjacent the center thereof or at a point substantially below the pivotal connection between the toggle elements 8 and 9, I am enabled to utilize the closing toggle (24, 25) to great advantage in that only a relatively short movement of the pedal lever 18 to effect the closing movement is necessary. V

The screw 21 may be adjusted to vary the relation between roller 22 and the cam 14, whereby a greater or less degree of pressure is exerted upwardly thru the straightened toggle 89.

Having thus described this invention, what I claim is as follows:

1. A garment pressof the type embodying cooperative pressing members movable in relation one to the other, a toggle arranged to move one of the members into pressing engagement with the other member, a cam connected to the toggle, and a foot lever connected'with the toggle to close the pressing members and having connection with the cam to operate sa1d cam and exert pressure on the closed pressing members.

2. A garment press of the type having cooperative pressing members movable in relation one to the other, A one of the members intopressing engagement with the other member, a cam related with the toggle and having an eccentric working face,

a foot lever to operate the toggle, and a device on the foot lever to engage the eccentric working face of the cam andexert additional force on the pressing members.

3. A garment press embodying co-opera- -tive pressing members movable in relation one to the other, a toggle adaptedto move one of the members into pressing engagement with the other member, a" cam relatedwith the toggle, a foot lever, a roller carrier operably related to the cam and foot lover, a roller journaled in the roller carrier and adapted to work against the cam, and an adj ustment screw operative between the roller carrier and the foot lever adapted to vary the working relation between the roller and the cam.

4. A garment pressing machine embodying co-opera'tive pressing members movable in relation to each other, a pivoted foot lever supported on the frame, a roller carrier pivoted in the frame concentric'with the pivot of the foot lever and movable with said foot lever, a roller journaled in the roller carrier, a cam lever pivoted in the frame and lying in contact with the roller, a connection between the against the cam by the foot lever, and a de-.

vice arranged to adjust the roller carrier relatively to the foot lever whereby the aforesaid roller is changed in relation to the cam to vary the engagement of the co-operative pressing members.

6. An operating mechanism for presses of the type comprising co-operative pressing members movable in relation one to the other, said mechanism consisting of a lever fulcrumed in the press frame, a roller carrier pivotally carried on the lever fulcrum point, an adjustment means arranged to hold the roller carrier in fixed relation with the lever and to move the roller carrier with said lever,

a cam having connection with one of the movable pressing members for imparting pressure thereto and having its cam face formed eccentric with relation to the fulcrum point which supports the foot lever and roller carrier, and a roller journaled in the roller a toggle adapted to move 1 carrier and adapted to work against the eccentric cam face.

In a press, a frame; a bed sugported thereby; a head lever; a head carrie thereby; a main toggleinterposed between said head lever and a thrust sustaining member, a transverse toggle connected with one of the links of the main toggle intermediate the ends of said link; and means for operating said transverse toggle.

8. In a press, a frame; a bed supported thereby; a head lever pivoted to said frame; a head carried by said lever; main toggle links comprising a relatively short link operatively connected to said head lever and a relatively long link connected to a thrust sustaining member; means engaging substantially the center of said relatively long link for straightening said toggle; and means for exerting an upward thrust upon the main toggle after the same is straightened.

9. In a press, a frame; a bed supported thereby; a head lever pivoted in said frame; a head carried by said lever; main toggle links comprising a relatively short link operatively connected to said head lever and a relatively long link connected to a thrust sustaining member; a second toggle, one member s whereof is connected substantially at the center of said relatively long link for straightening the main toggle links; means for straightening said second toggle; and means for applying an upward thrust to the main toggle when the same is straightened. In testimony whereof-I aflix my signature.

- P. EDUARD GELDHOF.

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