US1805553A - Shoe nail - Google Patents

Description

May 19', 1931.` .1, H. POPE 1,805,553

SHOE NAIL Original Filed June 16, 1920 fig. 5.

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n@ ver Patented May 19, 1931 UNlTEn STATES.;

PATE-NT'OFFICE JosEPH H. Porn; or' HAMILTON; MASSACHUSETTS, ifissrofnort To UNITED SHOE MA;

CHINERY CORPORATION ork Parnassia, NEW JnRsEY, A CORPORATION 'or yNEW JERSEY i s .sIIoE NAIL original applicati@ slee rune 1e, 192e,Y sef'ii 110.289,39?. "Divided and this appucation med october 25, 1926. Serial No. 143,971.

Thev present invention relates to fastening devices for shoes, 1t more .particularly concerning nails adapted forthesecuring of heels Y to shoe-bottomss An object of the invention 1s to provide a nail or like fastening by which there may be obtained a firm union between theshoe-parts.' An example cfa highly useful application of this invention is yfound in the attachmentof heels of the Louis type7 which, from a tread n 0f small diameterand a still smaller neck rising from the tread, expand by a sharp curvature to a much greater diameter at the .heelseat.. `To drive the attaching nails 'straight through such a heel vertically to the treadsurface, causes their clinching in the shoebottom tobe so Widely separated'from the edge of the heel-seat-end as to produce littlek resistance to gaping at therand-crease. ,Ify the nails are driven in an inclined direction',k

only a small divergence can be given to entering extremities if their bodies are to remain Within the Walls of the contracted portion `of the heel. The nails of this invention may be kept safely Within the neck of the heel, and

tion when this is driven,v Vand a guide-projecf v tion in the form of a radial fin extending longitudinally of the Abody-portionl andlarv vranged to determine the direction of the de` 1 fiection. This projection isprefe'rably from the side of the body of the nail in proximity' to but spaced from the vend oppositethev point as Well as from said point, and bearsfa definite extension ofthebody beyond the guide-pwjection gives a portionto'receive a toplift when the projection is' in contactwitlr the treadend of the kbody ofthe heel. In the accompanying drawings,

Fig. 1 shows infsideelevationa portion'of a shoeY with `its heel attached by one form of` my invention y Fig. 2 is a' plan view of the bottoni of body of the heel before thek application of the top-lift; Y

F 3 illustrates the heel-body partially pricked or perforated in preparation for driving the nails; s

Fig. is a'broken perspective vieW'Of one of my .improvednails; y

` Fig. 5 is a partial front elevation of'a heelattachingmachine by Which thesenails may be driven; 1 y y F.ig.;6 is an enlarged,sectionalv detail taken through the loading device and die-'block of the machine,fwith a shoe to be heeled upon Y its jack and in co-operation with the dieblock;and

Fig.l 7 is a topy plan View of the nail-receiv` ing cylindery mounted upon the loading device.-

At in Fig. l appears the bottom counter-portion of a shoe having 'attached to it a4 heel Hof the Louis typ'e',the body of which! hasv neck-portion l0 4of relatively smalll diameter; expanding slightly to the treadend 12`and'heavily in the opposite direction Y to the heelfseat-'end 14,1the rear and sides of the heel thus being upon ogee curves. The transverse dimension ofthe neck l0 may be as little as five-eighths of an inch7 While at the heel-seat thel diameter may be nearly three times this. Vere A the attaching nails N' driven straight through the heel into the shoetread-surface, they Wouldcome Within'an bottom ina direction at right angles to the 's area ztpproizimatelyvr of a ten cent piece, and

- bottom` at the points illustrated in* Fig.

angular relation to the inclined surface.V They theywould asindicatefl afm, lie' RIHIOS 25' the surface of therneck, AWherel they might be struck byY the rtrimming knife, 'injuringv this "i "N, preferablyin the manner described below.

, and spoilingthe heels; To keep the nails,V i

L in Fig. 5, this having a frame 16 carrying a die-block 18, with which co-operate a jack or work-support 20, reciprocatory drivers 22 and an oscillatory loa ding device or devices 24, each loading device including a loaderblock 26. Insteadof containing the usual nail-receiviing passages, the die-block and loader-block, since the nails used with the type of heels now under consideration are lon are each bored to receive vertical, cylint rical holders 28 and 30, respectively, extending'above the blocks and held in place by set-screws 32. Both holders are fixed as to their angular position about their longitudinal axes by keys 34, which are seated in recesses in the blocks. are vertical nail-receiving passages 36 grouped according to the points at which the nails aie to enter a heel H, pressed against the under side of the die-block and against the bottom of the shoe S which is jacked upon the work-support 20. When the loadercylinder 3() is in the nail-delivering position over the die-cylinder 28, the two sets of passages 36 are in vertical alineinent, so that the nails in the former, releasedbytheusualshutterineclianisin, Will fall directly into the passages oi the latter, there resting with their points upon the heel. Extending longitudinally of each of the nail-receiving passages in both holders and opening therefrom are slots 38 to admit lateral guide-projections 40 from the heel-attaching nails N. Each of these projections is in the form of a small fin struck out of the body of a nail, so that it is situated between depressions. The thickness of this fin is less than the diameter of the nail,

andV itextends longitudinally at one side, in proximity to but somewhat removed from the end opposite the heel-entering point. This point 42 is preferably formed by a surface 44 inclined, as by cutting or bending, from one side of the body to the other and bearing a definite angular relation about the longitudinal axis of said body to the projection 40. it being here shown as diainctrically opposite to it. The body at other than the point is preferably of substantially uniform diameter throughout, giving, beyond the projection, a portion suitable to retain a toplift pressed upon it. When the nails are inserted in the loader-passages, the combined relation between the slots 88, projections 40 and the heel H positioned upon the jacked shoe, presents the nail-points to the treadsurface of the lieel-body with the inclined surfaces turned inwardly from the corresponding elements of the outer curved surface of the heel, opposite which the nails are to'be driven. The angular positions of all these parts are clearly shown in Figs. 2 and 7. Since, when the nails are dropped into the passages in the loader-cylinder 30, but a relatively small portion have their projectionsy fortuitously alined with the slots 38, I prefer Through the holders to provide means foi turning the other nails about their longitudinal axes, so that the projections will be caused automatically to enter the slots. As herein illustrated, this means consists of inclined surfaces 46 situated between tlie slots at their upper extremities. these surfaces being furnished by a frusto-l conical end ofthe cylinder 30. After the point of a nail has been introduced into one of the passages 36 of the cylinder 30 and dropped, its weight, when the projection 40 strikes a surface 46, causes the nail to rotate about its axis until the projection enters the slot, allowing said nail to proceed properly along the passage to the alined passage in the die-cylinder 28. Y Y

In attaching a shoe-heel by the use of. nails N, since, to obtain the best results, the paths to be first followed by the nails should be substantially vertical to the tread-surfaceof the heel H which is to be attached to the shoe S, this heel is first perforated, as indicated at 48 in Fig. 3 of the drawings, by any suitable form of pricking machine to a depth at which 'the inner ends of the perforations are at or near the transverse plane of the heel at which the neck-portion begins to expand toward the lieel-seat-end. This having been accomplished, the heel is associated with the jacked shoe in the attaching machine L, and forced in the customary manner against the die-block beneath the nail-passages in the die-cylinder 28. A load of nails N is dropped into the loader-cylinder 30, their projections 40 either directly entering the slots 38 or being turned into co-operation therewith by their contact with the surfaces 46. This loadis transferred to the die-block, by which the nails are presented to the heel, and the loader being swung back to its initial position, the drivers 22 desceiid'and force the nails into the heel. At first, as they pass through the pricked perforations,their paths are straight, as determined by such perforations, but when the points 42 penetrate the material of the heel at the ends of the perforations,the resistance opposing their advance exerts a component of force acting at right angles yto the axes of the nails. This causes their gradual divergence from straight lines in directions opposite to the inclines 44, or toward the outside ofy the heel, these portions of the paths being curvilinear, as appears in Figs. l and 6 of the drawing. Such paths, being maintained iii the proper relation to the outside of the heel by the perforations and by the relation between the guideslots 38 and the nail-surfaces 44, cause the nails at all points between the tread-end and the lieel-seat-end to be sufficiently removed from the sides so there is no danger of theirr breaking through or being struck by the trimming knife, and still the nails are brought to such clinching'poiiits 5011i the shoe-bottom that they are relatively close to the rand-crease, holding this against gaping.

The curvature ofthe nail-paths beyond the extremities of the perforations 48 Will depend u upon the character of the resistance offered to them and upon the inclination of the surfaces 44. This last factor is a controllable one, the degree of'divergence `from a straight path varying inversely as the inclinationof the point. That is, the sharper the point or the more acute its angle With respect to the longitudinal axis of the nail, the less Will bethe departure of the'nail fromV the vertical. Consequently, by properly forming the points' of the nails, they may be caused to closely folloW the sides of heels of different contour and to emerge into the desired proximity to the rand-crease. The kaction of the drivers 22 continues until the projection 40 strikes and bears With some pressure against the treadend of the heel-body, it performing, in addition to its angular positioning function, that of the fiange upon the well-known collarnail', holding the heel-lifts Vagainst separation. Upon the extremities 52 of nails Which' project beyond the tread-end, a top-lift T is then spanked by the heel-attaching machine L in the usual manner, thus completing the j heeling operation.

A shoe in which the nail of the present in- Y vention is employed and the method of heeling such a shoe herein disclosed are made the subject of an application filed J une 16, 1920, and bearing the Serial No. 389,397, of Which this case is a division, the application having matured into Letters Patent of the United States, No. 1,631,155 onrJune 7, 1927. The

machine disclosed herein, by which the nail may be driven in performing the just-mentioned method, is claimed in co-pending application Serial No. 143,972, filed October 25, 1926. 7

Having described my invention, what IV claim as newl and desire to secure by Letters Patent of the United States is: u ,a 1. A shoe-nail comprising a body-portion having a point with an inclined surface .arrangedto Vcause the deflection of the body in a predetermined relation to a shoe when :the nail is driven, anda radial guide-fin of less Width laterally of thebody thanjsaid a radial guide-fin extending longitudinally ofthe body and arranged to determine the direction'ofy deflection, said fin being spaced from the endof the body opposite the point to give a portion to receive and retain a toplift Whenthen is in contact with the treadsurface of the bodyfof a heel.

4. A shoe-nail comprising a body having an inclined' end, the body from said in-v l JOSEPH H. Porn.

body and extending longitudinally ofthe bodyat the side oppositevthe `inclined @surface. i

2. A shoe-nail comprising a bodyhaving i.

a point with .an inclined surface arranged to cause deflection of the body When the nail 'is driven, and a guide-projection from the body arranged yto determine the direction of deflection, said projection being spaced from the end of the body opposite the point'togive a portion to receive and retain a top-lift Y when the projection is in contact With kthe tread-surface of the body of a heel.

3. A shoe-nail comprisinga body with an f inclined point arranged to cause the deiiec- V tion of the body When the nail is driven, and

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