US2251815A

US2251815A - Shoe clamping press

Info

Publication number: US2251815A
Application number: US276170A
Authority: US
Inventors: Abbratozzato Rosario
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-05-27
Filing date: 1939-05-27
Publication date: 1941-08-05
Anticipated expiration: 1958-08-05

Description

Aug. 5, 1941. R. ABBRATozzATo" SHOE CLAMPING PRESS 2 sheets-sheet 1 Filed May 27, 1,959

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Aug. 5, 1941. R. ABBRATOZZATO SHOE CLAMPING PRESS Filed May 27, 1959 2 Sheets-Sheet 2 SWW/nm @blica/man Patented Aug. 5, 1941 UNITED STATES PATENT OFFICE SHOE CLAMPING PRESS Rosario Abbratozzato, Baltimore, Md.

Application May 27, 1939, Serial No. 276,170

Claims.

This invention refers to shoe or boot making equipment and more particularly to a device that will facilitate the manufacture of shoes or boots, repairing same, or otherwise attaching or assembling their parts to meet the requirements of modern conditions. It has several objects, among which are included; the development of a device that will hold and exert pressure on the parts of the shoe to be finished, especially when a sole or the like is to be cemented in place, and bring about satisfactory and effective results; and to have such device provided with many mechanical features that will make its use convenient and expeditious, as well as render its cost economical. Further objects are to have the gripping parts interchangeable and adaptable to the special requirements and conditions that arise in connection with this work, and thereby increase the capacity of the machine.

Other objects will become apparent as the invention is more fully set forth.

The essential features of this invention include a pressure device, with mechanical ad* justments and features that enable it to hold a shoe or boot securely at the sole; with the heel free for attention, while the sole parts are becoming cemented together. Clamps have been used heretofore and their use has developed a series of stands or frames that have increased the cost without increasing their practical worth. This invention returns to the simplest form and comprises a press, but in order to enable the pressure device to do work more effectively over a larger scope, the form of the press has been varied from the conventional design and extended to provide for shoes large and small. Further, shoes being repaired or made up with soles of uncut leather form may be placed in the device without rst roughly removing the excess sole leather. There is ample room for this leather piece, and when the prior operations are completed, m-ay be readily cut to finish fit in one operation, instead of two or more, as previously required. The holding plate used for the sole, employs a rubber or resilient mat or gasket, which contacts the new sole piece and presses it to the shoe structure, along the surfaces that are to be cemented. This reduces the area required for cementation, makes a better job, economizes in cement material, and the labor required toplace same on. The pressure device itself is adjustable throughout and provided with arrangements to permit the ready mounting thereon of the various horn and last plates to suit the particular class of work, involved on each occasion. The

low relative cost of the devices enables them to be used specifically for each shoe, and provide for individual consideration, independently of all others. At the same time it permits the heels of the shoes to be worked on without regard to the portions sustained by the pressure device. In other words, the Work on the sole portion and the heel can be proceeded with concurrently. The device may also be used effectively for shoes or boots having large welts, that cannot be supported by the inside horn plate towards the edges, and in this Way get the soles on securely, because the edge portions are kept under pressure while in the device. The device can be mounted and removed from the shoes Without requiring same be bent or twisted around to do so.

In the drawings appended to this specification, to indicate an example of this invention:

Figure 1 is a side elevation of clamping press embodying this invention, with sole plate partly in section,

Figure 2 is a detail under-plan of the sole or last plate used with the clamping press,

Figure 3` is a sectional view along the line 3 3 of Figure 2,

Figure 4 is a plan view of an inner or horn plate used in with the press,

Figure 5 is a side elevation of Figure 4,

Figure 6 is a front View of Figure 1,

Figure 7 is a view in perspective looking up at the outside bottom portion of the last or sole plate used in this device, for shoes with large overhanging welt and sole pieces.

Figure 8 is a perspective detail of a claw used in connection with the last or sole plate,

Figure 9 is -a detail indicating the manner in which the claw is used on the shoe,

Fig. 10 is a plan of the foot piece,

Fig. 11 is a detail in sectional elevation of the foot piece,

Fig. 12 is a detail of the clamping press last holder used for supporting the sole plate,

Fig. 13 is a view in perspective showing the adjustable joint structure of

arms

3 and 1.

Similar reference characters refer to similar parts throughout the drawings.

In the drawings I represents a shank bolt which preferably has a square thread designed to withstand the pressure and wearing uses of the device. This bolt operates in a head 2, which is suitably screw-threaded internally for the purpose. This head is attached to a clamping and pressing frame 3 that is formed in a 3-like shape. The frame consists of the upper adjustable member I3 curved as illustrated; which is hinged tightly at 4, :and adjustable at 5, through the use of a type of bayonet joint, indicated in a general manner for purposes of illustration. This member can swing back as shown by the dotted outline in Figure 1, to remove the shank bolt I out of the shoe 6 readily without requiring the shoe to be twisted or bent for the purpose. 'Ihis method is easier on the shoe and prevents undue bending of its structure, at the time, when such stresses might prove harmful. The bottom member 1 of the frame is also circularly curved and is adjustable at 8 to permit it to be extended or retracted to a limited extent. A last plate head 9 is formed as illustrated, being enlarged and its upper surface l planed smooth to permit the base H of the last or sole plate I2 to rest flat thereon, with split pins of the former resiliently placed in holes provided in the last. The last-plate is preferably curved slightly to conform to the contour of the sole of the shoe, and is reinforced with a web I4. The plate is vcovered with a resilient mat `or ring l5 along its edge .portion so as to come into contact with the outside rim of the shoe sole, that is ready to be Y cemented on. This mat of rubber or other lsuitable resilient material is bevelled inwardly to make it exert pressure from the outer edge towards the central portion. The inside surface of the shoelis pressed upon by a horn plate Y I8, which is slightly curved and formed to the general shape of the toe portion of the shoe. The 'rear border stops at the shank of the shoe so as not to interfere with the placing of a heel last thereon. The inner plate has its rear portion formed with sh tails H having holes I8 that allow the plate to be temporarily tacked to the inside of the shoe and thus keep it in place. The upper surface of the inner plate has a rib i9 transversely across it, that prevents a foot piece28 from placing itself too far towards the toe of the plate, as well as preventing the plate moving backwardly. This rib is anked at both ends with other ribs 2| at 'right angles thereto, which are formed to guide the foot-piece longitudinally therein. These last ribs keep the horn plate central in the shoe. The foot-piece is formed interiorly with an orice v23 adapted to permit the end portion 2v2 of the shank bolt l to adjust itself therein to suit the plate position.

The operation of using the device consists in `pla-cing the selected under plate on the device. The'sole then receives a coat 'of cement and is placed on the under plate, the shoe with the selected horn plate is placed'on the'sole, the shank bolt is swung into the shoe and screwed against 155 the horn plate, the clamps are applied 'to the welt of the shoe and tightened until the sole and welt are rmly joined. While the cement is drying the shoe and the device may be .placed on a standard shoe repairers stand where the heels may be repaired Without disturbing the sole, or the under plate `and clamps may remain attached to vthe welt and sole fand the shoe removed from the device While the cement is drying.

The sole plate `shown in Figure 7 consists of a last-plate 25 with the edge lportion formed into rectangular projections 26 which extend beyond vthe soles and keep the whole sole piece supported. Theportions of plate |25 between 'these projections are bent downwardly and .stiiTen the underplate fas Awell as affording lugs for a tightrenin'g cord 21. This cord is inserted through lloops 28 on claws 28 and passes around '-25 thence through loops of other claws v29. The claws fare provided -with teeth 130 on ang'es :3l lwhich engage with the soles of shoes having large and extending welts and keeps them properly placed to the sole plate, since the inner horn plate is smaller in width than the welt portion and cannot keep the edges extending outside of the shoe, down against the under sole or last plate.

While the construction indicated is somewhat limited, it is not desired to limit this application for patent to the particular construction indicated, or in any other way otherwise than limited by theprior art, as it is appreciated that other forms of construction could be made, that would use the same principles and come within the scope of the appended claims.

Having thus described the invention, what is claimed is:

l. yIn a shoe press of the class described, the combination of a frame structure, having a 3- like contour with portions arranged for extending and retractive adjustment and hinged at the `connecting portions of the two arcuate sections to .permit the upper portion to swing backwards on a restricted arcuate travel, heads on the end portions of the sections, a shank bolt operable in one'of the heads, an inner plate, a foot piece pivot-ally attached on said bolt adapted to engage thesurface of the inner plate and permit positional adjustment thereon; an underplate attached to the head on .the other end section adapted to bepositioned on the exterior sole sur- =face of the shoe and to completely cover and extend beyond same,and a mat extending around the edge of the underplate to permit resilient action and vpressure on the sole and welt surface of theshoe as the shank bolt is screwed down on the inner platein the shoe.

i2. Ina shoe press, the combination of a hinged frame of 3-like contour with heads at'the end portions, a shank bolt in one of the heads arranged for screw-like adjustment to and from the other head aninner plate, a foot piece pivotallyattached on said bolt adapted to adjust- -ably engage the surface of the inner plate in theshoe to permit positional adjustment of said shoe, means on the other head for engagement -with the exterior surface of the sole of the shoe rfor fclamping cooperation with said foot piece and "said inner plate, means on the under plate for resiliently cushioning .the edge of the shoe, .and additional means for retaining the sole vand shoe ystructure together.

3. In 'a sh'oe press ofthe class described, the -combination of a frame of 3-like contour hinged together, a head member provided on one of th'eco'ntours of said frame with internal screw- Vthreaded means therein, another head member Von another contour of vsaid frame adapted to galign Iitself with the iirst mentioned head when the hinged portions are manipul-ated into nor- 'mal positiornascrew bolt disposed and operable in 'said 'rst 'mentioned head member, and provided with a foot plate, a horn-plate engaged -by'the foot-plate for .placement inside a shoe tobe pressed and .adapted to be adjusted varifabl-y-therein, a guide 'mounted on the horn plate ffor .engaging the foot plate and adjusting the sho'e in position, a sole plate on the second mentionedhe-ad member formed to engage and bend Athe `s'oleof the shoe on a'transverse curve and V-ti'ghtly press the sole between it and the horn plate for holding same securely, substantially as described.

-together and adapted to open out with its back portions contacting and restricting their hinged travel, a head member provided on one of' the said portions with internal screw-threaded means therein, another head member on another of said portions ad-apted to align itself with the iirst mentioned head when the hinged portions are manipulated into normal position, a screw bolt disposed and operable in said rst mentioned head member, and provided with a, foot plate, a lhorn plate engaged by the foot plate for placement inside a shoe to be pressed and adjusted variably therein, a guide mounted on the horn plate for engaging the foot plate and adjusting the same in position, a sole plate on the second mentioned head member formed to engage and bend the whole sole of the shoe on a transverse curve and tightly press the sole between it and the horn plate for holding same securely, and hook means for retaining the sole and welt together substantially as described.

5. A sole clamp for pressing an outsole against a shoe bottom having plates for bearing against the inner side of the shoe bottom and Whole outsole, and means for pressing the plates towards each other, and marginal clamps provided with hook means resiliently connected to the plate which extends beyond and bears against the Whole portion of the outsole, the connecting means for the marginal clamps consisting of U slots with downward projecting stops in the outsole bearing plate around which is entwined a binder medium cooperating with a plurality of hook means on the clamps.

ROSARIO ABBRATOZZATO.