US10021A - Screw-eastemtito- for boots and shoes - Google Patents

Description

No. 10,021. PATENTBD SEPT. 13, 1050. 1. 0111100131 0 R. SNBLL. SGREW FASTBNING POR 0001s 0R s110110.

NTTEB STATES PATENT OFFICE.

`TOHN CHILOOTT AND ROBERT SNELL. VOF BROOKLYN, NEW YORK.

SCREW-FASTENING FOR BOOTS AND SHOES.

Specification of Letters Patent No. 10,021, dated September 13, 1858.

To al cli/0m it may concern Be it known that we, JOHN CniLcorT and ROBERT SNELL, of the city of Brooklyn, county of Kings, and State of New York, have invented a new and useful Improvement in Screw-Fastenings for Boots and Shoes; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making part of this specica-tion, in which* Figure l, is a view of the underside of the sole of a boot, secured by our improved fastenings. Fig. 2, is a longitudinal section of the same. Fig. 3, is a section of part of the sole and upper, intended to show the manner in which the fastening is inserted to prevent any lumps or inequalities on the inside of the sole. Fig. 4, shows the two parts of one of the fastenings, detached.

Similar letters of reference indicate corresponding parts, in each of the several figures.

In the manufacture of boots and shoes, some secure fastening is much needed, for the purpose of more securely uniting the different soles or parts of the sole, and attaching the uppers thereto, in heavy work; and for the purpose of giving greater strength in certain 'parts of the solel in lighter work. The screw has been applied in various ways for these puposes, but never with entire success, always having failed to give the necessary security, or having made the boot or shoe so clumsy, by reason of the irregularities made on the inside of the sole, that it could not be worn with comfort, it has therefore been discarded.

The object of our invention is to make a screw fastening that will hold the parts together with perfect security, and at the same time allow the inner and outer surfaces of the sole to be made as smooth and even as when other means of security or attachments are used.

This screw fastening consists of a double metal screw or two male screws of different sizes, of which the larger is hollow and co-ntains a female screw to receive the smaller. These screws are inserted through the sole from opposite sides; the smaller being inserted from the inside and the larger being screwed in from the outside; the latter screwing into the sole, and screwing on to the male screw, and drawing the parts together like a screw and nut. The larger screw, which forms the nut for the smaller one, being screwed into the leather, will hold the smaller screw, and thus hold the parts together until it is almost entirely worn away; but as it extends almost through the sole, it is not likely to be worn to such a degree. The smaller screw is let in from the inside of the sole, in such a way, by splitting the inner sole, that its head is entirely buried nd raises no lump or inequality inside the oot.

a, in the accompanying drawing, is the inner screw; and b, is the outer screw, which forms also a nut to, a; each screw has a circular head, and the outer screw has holes in the head, or is otherwise provided with some means of inserting a screw-driver to turn it. The inner screw, a, is introduced by making a slit, d, in the inner sole, A, (which must be of stout leather,) from the edge toward the center, and by making a hole in the part below the slit, through which hole the screw is inserted with the head within the slit. The Lipper, B, must be made to overlap the inner sole sufficiently to receive the screw, 01 for which a suitable hole is made. The inner sole and upper are then placed on the last. The single piece or several pieces which form the outer sole, C, are bored to receive the outer screw, which must screw in tightly, and are then laid upon the inner sole and overlapping parts, c, of the upper, through which the inner screw protrudes. The outer screw, b, is then screwed in from the outside of the sole, and by screwing onto t-he inner screw, draws all the parts together, and draws the head of the screw, (l, so that it sinks into the sole, A. The outside face of the outer sole may be slightly countersunk to receive the head of the screw, Z), so that it may stand flush with the face of the sole. These fastenings may, for very strong work, be placed nearly close together; but we only propose, even in heavy work, to use a few of them, as the waterproof adhesive cement which we employ gives the required strength and security to the heaviest work. The slit, d, which is made in the inner sole, is intended to be closed up with waterproof adhesive cement; and the lapping parts of the upper are intended to be closely united to the inner and outer soles by the same material.

In boring the holes in the outer sole, care Inust be taken to bring them opposite those of the inner sole, Which may be done by marking both from one pattern.

In light boots and shoes, this fastening may be used with great advantage in the shank, Where there is great strain, and also in the heel.

The fastening may be used in certain parts of sewed boots; but our intention is to make it, With the aid of Waterproof cement, supersede sewing, and make Cheaper and .stronger boots, and pleasanter to Wear.

What We claim as our invention, and desire to secure by Letters Patent, is,

JOHN CHILCOTT. ROBERT SNELL.

' Vitnesses:

L. F. COHENE, WM. DIXEY.

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