US1111437A - Composite boat and shoe. - Google Patents

Description

G. P. BUTTERFIELD. COMPOSITE BOOT AND SHOE.

APPLICATION FILED JULY 1o. 1913.

1,1 1 1,437. Patented Sept-.22, 1914 UNTTED STATES PATENT OFFICE.

GEORGE F. BUTTERFIELD, F WEST NEWTON, MASSACHUSETTS, ASSIG-NOB T0 GRACEI.

BUTTERFIELD, OF WEST NEWTON, MASSACHUSETTS.

COMPOSITE BOOT AND SHOE.

To all whom t may concern.:

Be it knownV that I, GEORGE F. BUTTER- FIELD, of West Newton, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Composite Boots andy Shoes, ofI

which the following is a specification.

The object of this invention is the production of an efficient waterproof shoe with a limited amount of rubber in its sole portion,

' applied in vulcanizable condition .and shelllike form, and 'none whatever in the vamp or upper to interfere with foot ventilation. The composite structure of my improved shoe is admirably adapted to accomplish the ends desired. Its characteristic features will be first described-with reference to the accompanying drawing in which- Figure 1 is al longitudinal section and Fig. 2 is a bottom plan of my improved shoe.

Fig. 3 is a transverse section thereof and Fig. 4 a sectional representation of the parts to be assembled.

The composite boot or shoe has a suitable vamp or upper, 7, preferably of leather or canvas, a lining 8 of thin cotton and an inner sole 9 of heavy textile fabric, frictioncoated with rubber cement or vulcanizable rubber on its under side, for permanent ad- 80 hesion when vulcanized to the parts immediately beneath' it. Between the upper 7 and lining 8 at their lower edges, where they turn inwardly under the margins of the textile inner sole 9, I introduce a thin strip, say onelinch wide, of rubber binding 10, which extends somewhat above the inner sole and all around its sides and forward portion, such strip being coated`on both sides with rubber cement so as to give ai absolutely water tight 'oint. Below the textile inner sole 9 is a t layer or sheet 1l of vulcanizable rubber, coming into immediate vcontact with the cement coated under side "of said inner sole and with the inward turned edges of the vamp or upper 7. At

this stage the sheet or layer 11 extends, marginally, considerably beyond the insole and upper, around the entire bottom of the shoe.

A felt middle sole 12 here shown as hava substantial boss or heel shaped protu erance 13, of less size than an ordinary heel, is a plied immediatelyl beneath the layer 11, st being thoroughly coated all over by immersion in rubber cement until saturated. The protuberance or heel boss y Specication of Letters Patent. i Patented Sept,` l22, 1914,v

l Application led July 10, 1913. Serial N o. 778,273.

13 may be formed integral with the felt middle sole or secured to it by sewing or otherwise. Itfforms a light and cheap filling for the shell-like body of the heel portion of the outsole, thus saving cost and weight of rubber. The seam 15, Fig. l, which extends around the entire bottom portion of the shoermly unites the inner sole 9, the vamp 7 and lining 8, the binding strip 10 between them, the thin rubber sheet l1 and the felt middle sole 12, all being pressed and drawn into close contact while the surfaces are adhesively coated as stated,-the shoe in process being mounted upon a last as will be understood.

The felt middle sole 12 and the heel boss 13 have a contour similar to that of the outsole but are of less area than the latter. The projecting margins of the rubber sheet or layer 11 may be turned down and under the outer edges of the middle sole 12, with the coated surfaces of which said sheet will readily unite in vulcanizing. This would give a. rubber binding to sald edges of the felt middle-sole and aid in the adhesion of the outer sole when applied. The preferred construction, however, is shown in Figs. 1 and 3, where the margins of the rubber layer 11 are turned down outside, rather than inside, of the upright edge-wall of the heel and sole.

The outer sole or shoe bottom 14 is of shell-like form, its entiremargin being raised above its sunken interior so as to surround and protect the thickened felt middle sole and heel-boss and to merge, in vulcanizing, with the downward-turned margins of the rubber sheet or layer l1. This 'ves the effect or appearance of a heavy ru ber sole while, owing to the felted interior, the shoe is unusually light. Moreover it furnishes a substantial edge wall of rubber'for the composite sole.

The shoe bottom 14, complete, is formed of vulcanizable rubber, shaped in a suitable mold and vulcanized while the other parts of the composite shoe are held fast upon it during the operation by suitable clamping mechanism, the various rubber and rubbercoated parts being thereby permanently united by the heat and pressure essential to the process of vulcanization. Thus the sheet 11 and all other rubber parts are vulcanizable when rst assembled, but, in the completed shoe, are vulcanized together. The

tread surface of this shoe-bottom 14 is peculiar in two respects, as indicated in Fig. 2. The marginal portion of its tap-sole is notched lor scored with short, parallel, transverse channels ,0, in order to give greater iiexibility to the sole and relieve the strain on said portions in walking. Also the inclosed portion of the tread surface, indicated by the elongated diamond forms d, is made somewhat crowning or higher along its central line to give a cushioned or resilient tread and increased wearing service as well as to avoid slipping. These features, while desirable in a` boot or shoe, are not herein claimed.

I claim as my invention: Y

1. A composite boot or shoe, com rising an upper, an inner sole, a felt mid e sole saturated and thoroughly coated with rubber cement, and a rubber outsole constructed andarranged to cover the bottom surface and peripheral edge of said middle solez and stitching permanently uniting the middle sole marginally to the inner sole and upper, Vthe various parts of said shoe being unlted by vulcanization.

2. A composite boot or shoe, com rising an upper, an inner sole, a felt mid e sole and heel boss saturated and thorou hly` coated with rubber cement, and a ru ber ,outsole constructed and arranged to cover the bottom surface and peripheral edge of said middle sole, and stitching uniting the middle sole marginally to the inner sole textile and felted soles and stitching uniting such soles marginally to the upper and lining and a shell-like rubber outsole constructed and arranged to cover the bottom' surface and inclose the'peripheral edge of said felted middle sole, the various parts being permanently united by vulcanization. In testimony whereof I have aixed my signature, in presence of two witnesses. v

GEORGE F. BUTTERFIELD. Witnesses:

. A. H. SPENCER, A. I. Cnawronp.

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