US2263676A - Form for use in the manufacture of shoes - Google Patents

Description

Nov. 25, 1941. K. ENGEL ErAl. 2,263,676

FORM FOR US'E IN THE MANUFCTURE OF SHOES Fivled Aug. 16, 1940 Patented Nov. 25, 1941 FORMV FOR USE IN THE MANUFACTURE F SHOES Karl Engel, Swampscott, and Charles S. Kinney,

"Middleton, Mass.,

assignors to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey i Application August 16, 1940, seria1No.352,856

This invention relates to ,forms for use inthe manufacture of shoes, and has more-'particularly in view the provision of a form for use in assembling the molded heel parts of uppers with insoles in the manufacture of shoes of that kind in whichthe heel parts of the uppers, usually unattached to the foreparts, are molded substantially in final shape off the lasts.

In United States Letters Patent No. 2,165,361, granted on July l1, 1939 on an application oi'. ours We disclosed means for adapting a heel-end lasting machine of a well-known type for convenient use in assembling such molded heel parts with insoles on their lasts and infastening them to the insoles. The present invention provides a form which may be conveniently and economically used in such a machine in assembling a succession of molded heel parts with insoles still off their lasts. In the construction herein shown this form comprises a member which may be supported in the machine in the same manner as a last and has mounted thereon a block formed to fit the molded heel part of an upper and detachable to permit different blocks to be used for uppers of different sizes. The insole `forwardly of its heel-end portion is supported on the abovementioned member; and to insure that the insole will be positioned in proper relation to the molded heel part of the upper both this member and the detachable block are provided with insolepositioning means. More particularly, as illustrated, the block has a flange arranged to engage the edge face of the insole around its heel end to position the insole' lengthwise and its heel-end portion laterally, andthe member which supports the insole forwardly of its heel andis provided with springv clips arranged to engage the opposite side margins of the shank portion of the insole to position that portion laterally and to hold it in proper position. In order that the same form may be conveniently used for both right and left shoes, it is made double at its forward end to provide supports corresponding substantially in location and contour to the toe ends of right and left insoles respectively. This facilitates proper control of the form and insole by the operator during work-presenting movement of the work support in a machine of the abovementioned type, as more particularly hereinafter explained. l

The above and other features of the invention, including various novel details of construction and combinations of parts, will now be more particularly described with reference to the ac- Claims. (Cl. 12-133) companying drawing and thereafter pointed out in the claims.V

In the drawing, Fig. l is a view partly in right-hand side elevation and partly in section of a portion of a machine constructed as disclosed in the abovementioned Letters Patent, illustrating the use therein of a form such as invention;

Fig. 2. is a plan view of the form;

Fig.` 3 is a section on the line III-III of Fig. l; and

Fig. 4 is a section on the line IV-IV of Fig. 1.

As shown in Fig. 1, a machine constructed as disclosed in the above-mentioned Letters Patent is provided with a heel band 2 which, in the use of the `machine for the purpose therein illustrated, clamps the molded heel part of an upper about the heel end of a last, and it is further provided with wipers 4 which wipe inwardly over 'the inturned flange of the molded heel part and press the flange down on an insole fastened to the last, and with mechanism comprising a plurality of tack drivers 6 for driving a row of tacks to securev the inturned flange to the insole. The last is supported on a jack 8 comprising a casting lil mounted for swinging movements in directions lengthwise of the last andF a post l2 movable upwardly and downwardly in the'casting Il). Fast in a block I 4 mounted to slide in directions width- Wise of the` last in the upper end lof the post l2 is a pin IB arranged to enter the usual spindle hole in the heel end of the last. An arm I8 fast on the post is provided with a toe rest 2B for supporting the vtoe end of the last. The operator mounts a last on the jack while the latter occupies a forwardly inclined work-receiving position, the last having an insole tacked on its bottom face. Either before or after thus mounting the last on the jack he places the previously molded heel part of an upper on the heel end of the last with the inturned flange of the heel part extending inwardly over the insole. With the aid of a treadle (not herein shown) the operator thereafter swings the jack rearwardly to carry the heel end of the last and the shoe parts thereon to a position within the heel band 2 and raises the post I2 to a position determined by engagement of the heel end of the insole with a holddown member 22, During these movements of the jack and its post the operator finds it convenient and desirable to control the last by holding its toe end down on` the toe rest 28 by hand. He is relieved, however, of the necessity of controlling the heel part of the upper by reason provided by the presentv of the fact that the machine is provided with a clamping plate 24 which in response to the swinging of the jack clamps the heel part against the heel end of the last, as fully described in the above-mentioned Letters Patent. After the work has been presented within the heel band and against the holdown, the operator starts the power operation of the machine, whereupon the jack is operated to force the work firmly back against the heel band and up against the holddown and the heel band is closed about the heel end of the last to press the heel part of the upper close to the last. The wipers 4 are then moved inwardly over the inturned flange of the heel part to press it down on the insole and the tacks are driven to fasten it to the insole. Thereafter the parts of the machine are returned to their starting positions.

The present invention provides a form 26 which may be conveniently used in a machine constructed as described in the previously mentioned Letters Patent in assembling a succession of molded heel parts with insoles and in fastening them to the insoles, thus economizing in the use of lasts, since the shoe materials will not have to remain so long on their lasts as heretofore, and also avoiding the necessity of tacking the insoles to the lasts. The form 28 comprises a member 28 preferably made of metal and adapted to occupy the position of a last in the above-mentioned machine, and a block 38 detachably mounted on this member. The block 38 is formed to fit the molded heel part a of an upper of a shoe of a given size; i. e., it has the shape of the corresponding portion of a last appropriate for that shoe. The block 38 supports the heelend portion of the corresponding insole b, and forwardly of its heel-end portion the insole is supported by the member 28 which has an insolesupporting surface similar in contour to the bottom face f a last. In other respects the member 28 need not, and as herein illustrated, does not correspond in shape to a last except in so far as is appropriate to adapt it to occupy the position of a last in the machine and to facilitate control of the work by the operator. It is provided in its rear-end portion with a socket 32 arranged to receive the pinV I6, and its front end is arranged to be supported on the toe rest 20.

The block 3E) is made detachable from the member 28 to permit different blocks to be used respectively for shoes of different sizes while the same member 28 is used for a plurality of sizes. It will be understood, therefore, that while the member 28 is of approximately the same length as an insole mounted thereon, the edge of the toe end of the insole may or may not be flush with the corresponding end face of this member. Below the block 38 the member 28 is recessed at its opposite sides, as indicated at 34 (Fig. 3), so that it will not extend laterally outward beyond a block 38 of any size mounted thereon. Below this recessed portion the member 28 is provided in the vicinity of the pin I8 with downwardly and outwardly flaring side portions 35 arranged to be engaged by leaf springs 38 fast on the block i4 to hold the member 28 in place on this block. The block 38 is provided on its front end with a tongue i8 arranged to extend into a corresponding groove 42 in the member 28, and it also has threaded therein a screw 44 arranged to extend downwardly into a socket 48 in the member 28 further to position the block in proper relation to this member. A spring-pressed ball 48 conned in a nipple 58 which is threaded -in a bore in the member 28 is arranged to extend into an annular groove 52 in the screw 44 to retain the block 38 in place. It will be understood that the block may be removed simply by lifting it off the member 28.

To insure that the heel end of the insole will be positioned in proper relation to the heel part of the upper, there is fastened to the block 30 a thin plate 54 which extends around the rear end and along the sides of the block and projects above the insole-supporting face of the block a distance substantially equal to the thickness of the insole. The upwardly projecting portion of this plate, therefore, serves as a ange on the block to engage the edge face of the insole at its extreme heel end and at the sides of its heel-end portion and thus to position the insole lengthwise and to position its heel-end portion laterally. This flange also insures against any displacement of the insole by the pressure of the wipers 4 acting through the heel part of the upper. The plate 54 is mounted in a recess in the block 38 so that its outer face is a continuation of the upper-engaging face of the block. Further to insure that the insole will be properly positioned, there are fastened to opposite flat side faces of the member 28 spring clips 5B having inwardly extending portions 58 arranged to engage the opposite side margins of the insole at its shank portion to position this portion of the insole laterally. As illustrated in Fig. 4, the portions 58 of the spring clips extend inwardly far enough to hold the shank portion of the insole pressed down on the insole-supporting surface of the member 28. Outwardly extending tabs 68 on the spring clips permit the operator readily to spring them outward to receive the insole.

As illustrated in Fig. 2, the member 28 is so shaped that it may be conveniently used in operating on the parts of either right or left shoes. That is, the member is made double at its front end to provide supports 82 and 84 corresponding substantially in location and contour to the toe ends of right and left insoles, respectively, when the heel ends of the insoles are in proper relation to the block 38. This facilitates control of the work by the operator during the work-presenting movement of the jack, since it enables him to hold the front end of the member 28 down on the toe rest 28 by hand by pressing on the firmly supported toe end of the insole in the same manner as has been customary heretofore in the use of machines of the illustrated type in operating on shoe materials mounted on lasts.

It will be understood that in the use of the above-described form the insole and the molded heel part of the upper are assembled thereon in proper relation to the form and to each other when the jack occupies its forwardly inclined work-receiving position, as illustrated in Fig. l. Thereafter the machine operates in the same manner as if a last were used instead of the form. After the inturned flange of the heel part of the upper has been tacked to the insole and the jack has returned to its initial position, the operator removes the insole and the attached heel part from the form and mounts another insole and heel part thereon preparatory to the next operation of the machine.

Having described the invention, what we claim as new and desire to secure by Letters Patent of the United States is:

1. A form for use in assembling the previously molded heel parts of uppers with insoles and in fastening them to the insoles before the heel parts and insoles are mounted on lasts, said form comprising a member of approximately the same length as an insole and constructed to engage the support the insole forwardly of its heel-end portion, said member having mounted thereon a block formed to fit the molded heel part of an upper substantially throughout the length of said heel part over a substantial area heightwise thereof and detachable from the member to permit different blocks to be used for uppers of different sizes.

2. A form for use in assembling the previously molded heel parts of uppers with insoles and in fastening them to the insoles before the heel parts and insoles are mounted on lasts, said form comprising a member ofl approximately the same length as an insole and constructed to engage and support the insolve forwardly of its heelend portion, said member having detachably mounted thereon a block formed to t the molded heel part of an upper and provided with means for engaging the edge face of the heel end of the insole substantially throughout the thickness of the insole to position the insole.

3. A form for use in assembling the previously molded heel parts of uppers with insoles and in fastening them to the insoles before the heel parts and insoles are mounted on lasts, said form comprising a member of approximately the same length as an insole and constructed to engage and support the insole forwardly of its heel-end portion, said member having detachably mounted thereon a block formed to fit the molded heel part of an upper and provided with means for engaging the edge face of the insole at its extreme heel end and at the opposite sides of its heel-end portion forwardly of its extreme end to position that portion of the insole both lengthwise and laterally.

4. A form for use in assembling the previously molded heel parts of uppers with insoles and in fastening them to the insoles before the heel parts and insoles are mounted on lasts, said form comprising a member constructed to support an insole forwardly of its heel-end portion and provided with means for positioning the insole laterally by engagement therewith where it is thus supported, said member having detachably mounted thereon a block formed to t the molded heel part of an upper and provided withv means for engaging the edge face of the heel end of the insole further to position the insole.

5. A form for use in assembling the previously molded heel parts of uppers with insoles and in fastening them to the insoles before the heel parts and insoles are mounted on lasts, said form comprising a member constructed to support an insole forwardly of its heel-end portion and provided with means for engaging the opposite side margins of the insole to position it laterally where it is thus supported, said member having detachably mounted thereon a block formed to fit the molded heel part of an upper and provided with means for engaging the edge face of the insole at its extreme heel end and at the opposite sides of its heel-end portion to position that portion of the insole lengthwise and laterally,

6. A form for use in assembling the previously molded heel parts of uppers with insoles and in fastening them to the insoles before the heel parts and insoles are mounted on lasts, said form having a portion shaped to t the molded heel part of an upper and to support the heel end of an insole and having another portion for supporting the insole forwardly of its heel end, the form being provided also with means for positioning the insole laterally by engagement with it forwardly of its heel end and with additional means for positioning it by engagement with the i edge face of its heel-end portion.

7. A form for use in assembling the previously molded heel parts of uppers with insoles and in fastening them to the insoles before the heel parts and insoles are mounted on lasts, said form having a portion shaped to t the molded heel part of an upper and to support the heel end of an insole and having another portion for supporting the insole forwardly of its heel end, the form-being provided also with means for positioning the insole laterally by engagement with its opposite side margins forwardly of its heel end and with additional means for positioning it by engagement with its edge face at its extreme heel end and at opposite sides of its heel-end portion.

8. A form for use in assembling the previously molded heel parts of uppers with insoles and in fastening them to the insoles before the heel parts and insoles are mounted on lasts, said form having a portion shaped to t the molded heel part of an upper and to support the heel end of an insole and having another portion for supporting the insole forwardly of its heel end, the form being provided also with members for engaging the opposite side margins of the shank portion of the insole to position that portion of the insole laterally and to hold it against the form and with additional means for positioning the insole by engagement with the edge face of its heel-end portion.

9. A form for use in assembling the previously molded heel parts of uppers with insoles and in fastening them to the insoles before the heel parts and insoles are mounted on lasts, said form having a portion shaped to fit the molded heel part of an upper and to support the heel end of an insole and having another portion for supporting the insole forwardly of its heel end, the form being provided also with spring clips for positioning and holding the shank portion of the insole at its opposite side margins and with a flange for engaging the edge face of the insole around its heel end further to position the insole.

10. A form for use in assembling the previously molded heel parts of uppers with insoles and in fastening them to the insoles before the heel parts and insoles are mounted on lasts, said form being constructed to support the insoles substantially throughout their lengths and having a portion shaped to fit the molded heel parts of the uppers of right and left shoes, the portion of the form at the toe ends of the insoles being double to provide supports corresponding substantially in location and contour to the toe ends of right and left insoles respectively.

KARL ENGEL. CHARLES S. KINNEY.

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