US2318025A - Fastening-inserting machine - Google Patents

Description

May 4, 1943. E. E. s'rRA'r-roN FASTENING- INS ERTING MACHINE Filed Dec. 50, 1'941 ivi/ENTE@A Patented May 4, 1943 A 2,318,025 FAsrENING-msEnTING MACHINE Frank E. Stratton, Beverly, Mass., assignor to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application Decameron, 1941, serial No. 424,858

6 Claims.

My invention relates to machines `by which fastenings are inserted in shoesVand more especially to the work-supports of such machines.

In a well known apparatus for effecting the temporary attachment of heels to shoes in which are lasts, the shoe and heel are supported upon their tread-surfaces and clamped together by.

pressure applied to the crown of the last-cone. To allow the direction of the clamping force Vto be eiective to hold the heel in the desired-position against the heel-seat, the supportfor the forepart is made adjustable as to height. This may so tip the heel, that the forward portion of the tread will be raised from its support, leaving only the rear edge in contact with -thesupporting surface. Under these conditions, the applied pressure may deform this edge. An object or" my invention is to obtain in an effective manner an equalization of the pressure over the heel-tread. To attain this end, I combine with a member bywhich clamping pressure is applied, a tread-support for the work having not only a plate variable in position beneath the forepart of the shoe, but

also a second plate mounted to move-upon ,the support. and upon which the heel-treadmay rest, there being means to secure this second plate in definite angular positions with respect to the plane of the forepart-plate. With such a relation established, it may be made certain that, regardless of the direction of application of pressure to the work, the tread-surface of the heel will bear uniformly upon its plate without danger of mutilation. The adjustment of the heel-plate is preferably attained by mounting it to rock upon the support, as by an arcuate projection seated in a i the nut lie beneath the raised shank of the shoe,

where it is readily accessible.

In the accompanying drawing,

Fig. 1 shows in side elevation the work-supporting portion of a heel-attaching machine embodying one form of my invention; and

Fig. 2 is a fragmentary top plan view of the heel-support.

At IIJ appears the stem by which there is carried upon the frame F of a fastening-inserting machine the base I2 of a work-support A, the work, in the present instance, consisting of a shoe S upon a last L and a heel H, which is to be attached to the heel-seat of the shoe. The attachment may be effected in the customary manner, by operating through a passage s, extending through the cone of the last, a drill to form a bore through the heel-seat of the shoe into the heel,

and then inserting through this bore a long temporary screw, which engages the heel at its point and bears at its head upon the cro-wn of the lastcone. The work is clamped upon the support, to maintain the shoe and heel firmly in the .correct relation for the attachment, by a lever I4, which engages the cone of the last and is actuated-by an unillustrated treadle mechanism.

The work-support proper is shown at I6, it carrying means to'L receive contact of the treadsurfaces of said work. It is pivoted at I8 upon the, base I2 and adjustable astoangle by a wedge 2i), which may be drawn between the support and base. This permits the operator to so position the work, that the passage s inthe last will be located conveniently for the operations to be performed. 'I'he support carries a plate 22, uponr which the forepart of theA shoe may rest. A shank 2li, depending from the plate, lies within a bore in the support, it being adjustably fixed therein by a set-screw 25. This adjustment of the forepartplatelis commonly employed to cause both the forepart of the shoe and the heel to tread uniformly upon the support.y It is also utilized to so present the crown of the last-cone to the clamping lever I4, that the line along which prestained' at this time against rearward displace-l ment by the usual back-stop 3D, vertically adjustable upon the base. As the forepart-plate is raised for the last-stated purpose, and to attain the desired line of pressure for heels of some heights, as those of the Cuban type, the heel will be tilted back, so that, if its tread-end engages an unvarying surface of the ysupport I6, its forward portion will be raised clear of the support, leaving contact only at the rear edge. Upon the application of pressure to the last-cone by the lever I4, this edge may be crushed and the heel thus deformed.

To prevent the above-indicated result, I arrangea heel-tread-plate 32 to rock longitudinally of the support I6. At the underside of this plate is an arcuate lug 34 tting within a complemental recess 3G in the support. The common center of curvature of the lug and the recess lies in the heel-engaging surface of the plate. Longitudinally of the support the lug is divided, and

pivoted to it, between the sections in vertically y elongated openings 38, is a threaded rod 4D. This rod extends forwardly through a depression in 2" di f fi be shifted longitudinally, and, by its connection Y below the center of curvature of the lug 34, will rock the plate 32 in its depression. The pivot of the rod is capable of shifting in the openings 38 to accommodate itself to the variations in the' angular position of the plate. The I upper surface of the plate may thus be caused to lie vparallel to the tread-face of the heel, whatever adjustl of the heel.

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

1. In a machine for inserting a fastening through a passage in a last Within a shoe and into an applied-heel, a tread-support for the work, a platev variable in position upon the support and upon which the forepart of the shoe may rest, a second plate mounted tomove upon the support and upon which the tread-surface of the heelmay rest, means for securing the heelplate in different angular positions with respect to the .plane'of the forepart-plate, and movable clamping means for 'engagement with the cone of the last.

2.. In a machine for -inserting a fastening through a passage in a last within a shoe andinto an applied heel, a base, a tread-support pivoted upon the base about an axis substantially paral lel to the tread-surface of a supported shoe, means arranged to vary the angular position of the support, a plate variable in position upon the support and upon Which the kforepart of the shoemay rest, a second plate mounted to rock upon the support and upon which the heel may rest, means for securing the heel-plate in different angular positions in accordance with the positions of the tread-support and forepart-plate, and a movable clamping member for engagement with the cone of the last.

3. In a machine for inserting fastenings for attaching heels to shoes, a tread-support for the work, a plate variable in position upon the support and upon which the forepart of the shoe i may rest, a second plate mounted to rock upon the support and upon which the heel may rest, a screw connected to the second plate, and a nut threaded upon the screw and rotatable in the tread-support. f

4. In a machine for inserting fastenings for attaching heels to shoes, a tread-support for the Work, a plate variable in position upon the support and upon which the forepart of the shoe may rest, a second plate upon which the heel may rest and having anarcuate projection seated in a complementa] recess in the support, a threaded rod pivoted to the projection, and a nut upon the rod rotatable in a. recess in the support.`

5. In a machine for inserting fastenings for attaching heels to shoes, a tread-support for the work, a plate variable in position upon the support and upon which the forepart of the shoe may rest, a second plate upon which the heel may rest and having a divided arcuate projection seated in a complemental recess in the support and provided withelongated openings, a threaded rod pivoted in the openings and extending forwardly in a depression in the support, and a nut upon the rod rotatable in a recess in the support. A

6. In a machine for inserting fastenings for attaching heels to shoes, a tread-support 'forthe work, a plate variablein position upon the support and upon which the forepart of the shoe may rest, a second plate uponfwhich the heel may rest and having an arcuate projection seated in a complemental recessV in the support, a threaded'rod pivoted to the Vprojection and extending toWard the forepartplate,andV a nut upon the rod rotatable in the support between the forepart-plate and the heel-plate and beneath the shank of the supported shoe. Y,

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