US1725024A - Heel-attaching machine - Google Patents

Description

A g- 1929- J. F. STANDISH ,72 4

. HEEL ATTIAICHIANG MACHINE F iled Aug. 25, 1927 I r I Patented Aug. 20, 1929.

UNITED STATES PATENT OFFICE.

JOHN F. STANDISH, OF WINTHROP, MASSACHUSETTS, .ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW

JERSEY.

JERSEY, A CORPORATION OF NEW HEEL-ATTACHIN G MACHINE.

Application filed August 25, 1927.

This invention relates to machines for attaching heels to shoes. It particularly concerns an abutment device in such machines, which holds the shoe and heel in place upon the jack and which resists the nailing pressure.

Some types of heel, as the spike, have not only extreme height, heavy pitch and a small tread-surface lying at a considerable angle to the heel-seat, but also have little forward projection toward the shank at the upper portion of the breast. The result is that the condition of the work may be unstable during the nailing operation, the force exerted by the nails as they enter the heel tending to tilt it forward and displace it from the clamped position, thus preventing close attachment. An object of my invention is to effect a firm retention of such heels against the greatest forces to which they may be subjected. To obtain this result, there is associated with the tread-abutment a member, preferably arranged to contact with the heel-breast adjacent to the tread-surface, movable under the influence of the work and arranged to resist positively displacement of the heel upon the abutment. By this means, the resisting member may first accommodate itself to the heel being operated upon, so that it assumes the most eflicient retaining relation, and then acts to effect this retention, there being means which looks it against movement. Herein I show an abutment-block upon which a slide is movable, this-slide carrying, as a projection, the breast contact-portion. The locking of the slide is accomplished by inclined surfaces which it bears and which are forced by the pressure upon the work against like surfaces upon the block. To prevent interference with the movement of the slide during the initial positioning of the work by the operator, the action of the locking means may normally be prevented, as by a spring forcing the inclined surfaces apart.

In tlie'accompa-nying drawing illustrating one form of this invention,

Fig. 1 shows, in side elevation, portions of a jack and a pressure-head of a heel-attach ing machine, said head carrying my improved contact device, which is in engagement with a heel to be attached;

Serial No. 215,386.

Fig. 2 is a similar View of the head with the tread and breast contact members in normal position Fig. 3 is a front elevation of the contact device, parts being broken away; and

Fig. 4 is a broken side elevation of the device.

A form of heel-attaching machine in connection with which this invention is useful is disclosed in Letters Patent of the United States N o. 1,545,57 5, Standish, July 14, 1925. Of this, there appears in the annexed drawing a jack 10 and a co-operating pressurehead 12. The jack is for the support of a shoe, as indicated at S, upon the heel-seat of which shoe is placed a heel H to be attached, this being effected by the insertion of nails N through the heel-seat into the heel under the influence of reciprocatory drivers 14. The head 12 is movable toward the jack by treadle and power mechanism (not shown), and includes a rear abutment 16 mounted upon a vertically movable slide 18 and a tread-abutment having a like slide 20. The abutment 16 may consist of a fork adapted to engage the heel, which is shown as of the slender, heavily inclined spike type, over the curved enlargement adjacent to the rear counter-portion of the shoe. The slides of the rear and tread-abutments are joined by gearing 22, giving an opposite movement which permits them to accommodate themselves to the dimensions of the particular heel being operated upon and equalizes the pressure.

Considering particularly the tread-abutment, with which the elements of my invention are directly associated, the slide 20 has, mounted for adjustment upon its arcuate lower extremity, a block 24, which may be caused. to conform to different angles at which lie the tread-surfaces of the heels to be nailed. The block is recessed at 26, furnishing ways in which a slide 28 is movable longitudinally of the jacked shoe. This slide has a lower face 30 for contact with the treadsurface of the heel placed beneath it. At the forward extremity of the face 30 is a breast contact member, furnished by a downward projection 32 from the slide 28. The engagement with the heel-breast is shown as through a relatively soft portion 34, which may be of leather or any other substance which will not mar the covering or finish of the heels. The slide 28, with its projection, is urged normally toward the rear by a spring 36 lying in a recess in the slide and resting against an end of this recess and against the reduced lower extremity of a screw 38 threaded vertically through the block 28 and extending into the slide-recess. The side surfaces of the recess 26 and the opposed surfaces of the slide at 40 are inclined upwardly and inwardly, and when there is no pressure applied by the treadabutment device to the work, these surfaces allow free movement of the slide along its ways. When, however, the abutment descends upon a heel, the surfaces are forced together, so that they wedge and lock the slide firmly at whatever point it may lie. To prevent accidental looking or undue resistance to movement during the initial positioning of the work by the operator, the surfaces at 40 are normally separated by a spring 42, shown as occupying a recess in the block 24 and bearing upon a loose plate 44, beneath which the slide moves.

The action of the invention is as follows: With the abutments in proximity to the positions which they are to occupy when clamping a heel for its nailing, the operator places a shoe S upon the jack 10 and a heel H upon its heel-seat, and, holding the heel in the correct position, slides it forward with the shoe until the interior of the latter arrives at a counter-gage 46 carried by the jack. This determines the nailing position for the work. During this locating of the shoe and heel, the tread-surface of said heel travels beneath the contact-surface 30 of the slide 28 until the heel-breast adjacent to the tread encounters the yieldable contact-portion 34 of the member 32. Then this breast contact member advances with the heel, compressing the spring 36, until the shoe is stopped by the counter-gage. Freedom from resistance due to engagement of the inclined surfaces at 40 is assured by their separation by the spring 42. The work is now ready for the operation, and its clamping is effected by depression of the head 12 through the treadle mechanism, which brings the rear abutment 16 and the tread-abutment-face 30 against the curved rear and tread-surfaces of the heel, respectively, with equal pressure. The contact member 34 is, during this clamping, held in engagement with the breast of the heel by its spring, and, as the final clamping pressure is applied, the forcing together of the inclined surfaces at 40 locks the slide to the abutment-block 24, so the previously movable member 34 becomes, in efiect, an integral portion of the tread-slide. There is thus provided a positive bar against forward displacement of the heel, which can-- not be tilted as a result of the insertion of the nails. At the same time, the heel is relieved of undue pressure at the rear abutment 16, so there is no tendency to split the heel horizontally along a plane just above the abutment.

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

1. In a heel-attaching machine, an abutment arranged for contact with the treadsurface of a heel, and a member movable under the influence of the heel and arranged to resist positively displacement of said heel with relation to the abutment.

2. In a heel-attaching machine, an abut- ,ment arranged for contact with the treadsurface of a heel, a member movable under the influence of the heel, and means acting after said movement for locking the member.

3. In a heel-attaching machine, an abutment arranged for contact with the tread surface of a heel, a member arranged to contact with the breast of the heel adjacent to the tread-abutment and being movable by said contact, and means for locking the member against movement. 7

4. In a heel-attaching machine, an abutment-block, a tread contact member movable upon the block, a breast contact member carried by the tread member, and lockingmeans for the contact members co-operating with the block.

5. In a heel-attaching machine, an abutment-block, and a slide movable upon the block and having a portion arranged for contact with the breast-portion of a heel, the block and slide having contacting inclined surfaces.

6. In a heel-attaching machine, an abutment-block, a slide movable thereon and arranged for contact with a heel, and means under the influence of pressure upon the work for locking the slide against movement.

7. In a heel-attaching machine, an abutmentblock, a slide movable thereon and arranged for contact with a heel, means under the influence of pressure upon the work for locking the slide against movement, and means for normally preventing the action of the locking means.

8. In a heel-attaching machine, a heelabutmentblock, and a contact-slide, the slide and block being provided with co-operating inclined surfaces forced into locking engagement by pressure upon the work.

9. In a heel-attaching machine, a heelabutment-block, a contact-slide, the slide and block being provided with cooperating inclined surfaces forced into locking engagement by pressure upon the work, and means tending normally to. separate said surfaces.

10. In a heel-attaching machine, a heelabutment-block, a contact-slide, the slide and block being provided with cooperating inclined surfaces forced into locking engagement by pressure upon the work, a spring urging the slide toward one extreme position, and a spring forcing the inclined surfaces apart.

11. In a heel-attaching machine, an abutment arranged for contact with the rear of a heel adjacent to the heel-seat end, a treadabutment, said abutments being movable, and a member arranged for contact with the breast of the heel adjacent to the tread.

12. In a heel-attaching machine, an abutment for the rear of a heel, and a treadabutment having a projection arranged for contact With the breast of the heal, said abutments being movable in different directions under the influence of the heel.

13. In a heel-attaching machine, an abutment for the rear of a heel adjacent to the heel-seat end, and a tread-abutment having a portion yieldable from the rear abutment at the tread end of the heel.

14. In a heel-attaching machine, an abutment for the rear of a heel, and a tread-abutment having -a breast-engaging projection yieldable bodily from the rear abutment, the heel-engaging surface of the projections being yieldable.

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

JOHN F. STANDISH.

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