US1814665A - Garment press - Google Patents

Description

July- 14, 1931. J. CARD GARMENT PRESS Filed May 28, 1929 4 Sheets-Sheet. l

J. L. CARD 14,665

GARMENT PRESS Filed May 28, 1929' July-14, 1931. 1L, mg) 1,814,665

GARMENT PRESS FiledMay 28, 1929 4 Sheets-Sheet, 4.

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3] vwwwtoz J65]? L. 62270 Patented July 14, 1931 UNITED" STATES PATENT OFFICE J HN L. CARD, or BALTIMORE,- vrA yLANn, ASSIGNOR To UNITED sTATEs HOFFMAN MAeHINERY CORPORATION, OF NEW YoRK, N. Y., A CORPORATION OE DELAWARE GARMENT rR s's Application filed May 28,

dition is, of course, dependent on the with.

lfi'drawal of the hands.

It is an object of the present invention to provide a clutch or interconnection between the power mechanism andthe press head,

means being associated with the clutch to prevent clutching action except when the press head has been lowered to contact the goods on the lower press element or buck.

It is also an object of the invention so to construct the clutch 'thatit is automatically disengaged when maximumpower is applied, the application of power being mamtained' as long as desired. The clutch-parts may then be reengaged to return the press head to normal position. The clutch per se 7 isthe subject'matterof copending' applicationqserialNumber 365,404, filed May 23, 1929, by John-L. Card. 7

Reference to the following description and the*appended.drawings will enable a'clear understanding of the invention to be had:

Figure 1 is a side elevation, partly in sec; tion, of a garment press showing the relation of the clutch mechanism to the press when the latter is open;

, Fig. 2 is a view similar to Fig. 1 except that the press is closed and the clutch is in position to permit application of power; Fig. 3 is a front elevation, partly in secti0n,-taken on line3-3 of Fig. 5;

Fig, 4 is a topsectional view taken on line 4-4 of Fig. 3;

Fig. 5 is a side sectional view taken on line 5-5 of Fig. 3; and 1 I i Fig. 6 is a perspective view of the clutch,

The sleevelikewise has a reduced portion 31 1929. Serial No. 366,693.

theparts being separated for clearness of illustration.

'Referring to the drawings, the I garment press illustrated is of that type in which a movable press head 11 is adapted to be swung 5 downwardly into pressing relation with a fixed press element or buck12. The head 11 is fixed to a lever 13 fulcrumed intermediate its ends, as at 14, to a press frame 15. Toggle mechanism comprising the links 16, 17, is employed for exerting pressure on the lever, a connecting rod 18 being associated with the power mechanism for this purpose. Springs 19, only one of which is shown, connect the lever 13 with the press frame and tend to maintain the lever in raised or open position. The above described parts are of the usual construction and relation and their details require no further explanation.

- The power mechanism and the'clutch for connecting the toggle thereto are illustrated in detail in Figs. 3 and 4. A driving shaft 21, connected to and continuously rotated by a motor 22, is provided near one end with a worm 23 meshing with worm gear 24. Coaxially aligned with the worm gear, but rotatable with respect thereto, is a driven shaft 25 having a crank portion 25. Shaft 25 is journaled in a boss 26 on the housing 27 and has a reduced portion-28 fitting within a sleeve 29. so

journaled ina boss 32 in the housing cover 33. The worm gear 24 andsleeve 29 are fixed with respect toeach other, a key or other suitable fastening means 30 holding the worm gear to the sleeve. It is to be noted that shaft 25 and sleeve 29 mutually support each other, thus dispensing with intermediate bearings, but the sleeve is free to rotate on the shaft.

One end of sleeve 29 is enlarged and milled to provide a number of ratchet teeth 34 adapted to cooperate with a pawl member 35 on plate 36. This plate has a hub portion 36' which is keyed to. shaft 25, so that when thepawl -35engages the teeth 34 on the sleeve 29, the shaft 25 rotates with worm gear 24. The pawl is fastened intermediate its ends to a pin 37 rotatabl supported in place 36 and in the segmental member 38 fastened to the plate, the pawl being supported between the plate and segment to minimize the danger of shearing the pin when the clutch is thrown in. Spring 39, fastened at one end to plate 36 and at its other end to a disk 40 secured to pin 37 and bearing against an annular flange 41 on the plate 36, normally tends to rotate the pawl to engaging position with respect to ratchet teeth 24. Mounted in a forked end portion 42 of the pawl is a cam follower 43 which rides on the inner periphery of an annular cam ring 44, which, as illustrated best in Fig. 6, has two spaced high surfaces ab, c-d, and a corresponding number of low portions or valleys bc da, designed to raise or lower the engaging end of the pawl with respect to the teeth 34.

The outer periphery 45 of the ring is concentric with the shaft 15 and is mounted in the housing 27 to provide a. sliding fit therein."

Lateral displacement of the ring is prevented by an annular flange 46 on .the housing and segments 47 removably secured to the housing by screws 48. The cam ring is shiftable circumferentially with respect to the housing, the means for shifting the ring comprising a forked rocker arm 49 cooperating with pin 51 on the ring. The rocker shaft 52 is journaled in the housing, as shown in Fig. 5, and

abutment 59 on the housing, thereby limiting the circumferential sliding movement of the cam ring.

The operation of the press will be apparent if it is firstassumed that the press is open as shown in Fig. 1. It will be noted that in this position the cam follower 43 corresponds with the point a on the shiftable cam ring (see Fig. 6). Since the pawl is secured to the plate 36, which in turn is keyed to shaft 25, it will be moved'to the posit-ion indicated in Fig. 2 when the press head is lowered by hand to preliminary pressing position, the shaft 25 being rotated due to its connection with toggle link 17. The roller 43 does not, however, reach the point I) on the cam and cannot, therefore, permit the pawl to rock into engagement with teeth 34. To throw the pawl into engaging relation with the teeth it is necessary to shift the camringuntil the recess or valley b0 underlies the cam follower and this is done by depressing lever 55 to rock the shifting fork 49 to the position indicated by dotted lines in Fig. 3. It is to be understood that shifting of the ring alone will not throw the pawl into engagement with the teeth 34, it being first necessary to F position pawl 35 with reference to the point Z) of the cam, the distance between the roller and point 5 when the press is preliminarily closed being slightly less than the distance through which the cam may be shifted.

When the roller drops into the depression 12-0, the pawl engages the teeth 34 and the driving and driven shafts are coupled so that the crank arm 25 is rotated to bring the connecting rod 18 to a horizontal position, at which time the toggle is straightened and maximum pressure applied. It is apparent that crank 25 and arm 18 are in alignment in this latter position, that is the crank is on dead center. Since the spring 56 tends to turn the cam ring in a counter-clockwise direction, the ring tends to follow the roller '43. The shoulder 58 on the ring limits the return movement of the cam, however, and brings the ring to rest in a position at which the cam surface c-cl will engage theroller 43 simultaneously with the application of maximum pressure, that is, when the crank 25 is on dead center. Pawl 35 is therefore disengaged during the application of maximum pressure;

lVhen it is desired to break the toggle the cam ring is again shifted bydepressing lever 55. The high portion cd of the cam is substantially the length of the shifting movement of the ring and as the ring is shifted in a clockwise direction roller 43 will drop into the depression cZa. This latter depres sion is sufiic'iently long to permit engagement of the pawl and teeth until the press is fully open when the pawl will again be disengaged by coaction of the follower and cam surface a b. The above described cycle is repeated for each pressing operation.

It is obvious that the actuation ofthe .clutch is dependent on the preliminary closing of the'press and that there is no danger of the power being applied while the operators hands are between the pressing elements. It is likewise obvious that maximum pressure may be applied for any desired period and that the clutch is easily controlled by the operator. While the mechanism illustrated is simple of construction and a preferred form of the invention, it is susceptible of modification and maybe changed to meet the requirements of the service imposed upon it. i hat is claimed is: r

1. In a garment press, the combination of a fixed pressing element; a movable element adapted to be moved into pressing relation with said fixed element by the operator; .constantly operated power means; crank means connected to said movable element for applying pressurethereto; clutch means for connecting said power means to said pressure applying means, said clutch means being connected to said crank means and rotatable therewith; means constantly urging said clutch means towards engaging position;

means normally holding saidclutch means in disconnected position; and operator operated means for shifting said holding means to permit said urging means. to effect actuation of said clutch means only when said elements are in pressing relation to apply heavy pressure and upon a subsequent operation of the operator operated means .to open the press.

2. In a garment press, the combination of a fixed pressing element; a movable element adapted to be moved into pressing relation with said fixed element by the operator; constantly operated power means; means connected to said movable element for applying pressure thereto; a pawlon said pressure applying means; a toothed member on the power means and adapted to engage said pawl; means constantly urging said pawl into engagement with said toothed member; shiftable cam means for holding said pawl out of engagement with said toothed member during a predetermined movement ofsaid movable element; and means for shifting said cam; said pawl and toothed member. engaging each other only after said predetermined movement of the movable pressing element and shifting of the cam to apply heavy pressure, being disengaged during application of heavy pressure, and thereafter being reengaged by a subsequent shifting of the cam means to open the press. I

3. In a garment press, the combination of a fixed pressing element; a movable element adapted to be moved into pressing relation with said fixed element by the operator; con- 7 stantly operated power means; means connected to said movable element for applying pressure thereto; a pawl on said pressure applying means; a toothed member on said power means and adapted to engage said pawl; means constantly urging said pawl towards engaging position; a shiftable ring; means on said ring for holding said pawl out of engagement with said toothed member during a predetermined movementof said movable pressing element; means for shifting said ring; means on said ring'for disengaging the pawl from the toothed member after a predetermined engagementthereof; and othervmeans on said ring to permit said urging means to effect engagement ofthe pawl and toothed memberfo-r. opening the press when said cam isagain shift'e I 4. In a garment press, the combination of a fixed pressing element; a movable element adapted to be moved into pressing relation with said fixed element by the operator; constantly operated power means; means con- 60 nected to said movable element for applying pressure thereto; a pawl on said pressure applying means; a toothed member on said powermeans andadapted to engage said pawl; means constantly urging said pawl towards engaging position; a shiftable ring, 7

heavy pressure, and engageable with the toothed member when overlying the other space between the surfaces to open the press; and means for shifting the ring to permit engagement of the pawl and toothed member.

In testimony whereof I have signed my name to this specification.

JOHN L. CARD.

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