US1736576A - Elastic shoe sole - Google Patents

Description

Nov. l19, 1929.y G. w. CABLE 1,736,576

ELASTIC SHOE SOLE Filed Dec. 13, 1928 @www ge omge, QW, Cxfe),

Patented Nov. 19, 1929 UNITED STATES GEORGE W. CABLE, OF MARYSVIIiLE, CALIFORNIA ELASTIC SHOE ,SOLE

Application filed December 13, 1928. Serial No. 325,807.

The invention aims to provide a new and improved elastic shoe sole which will be long lived, unusually comfortable and of great advantage when walking on either smooth or rough surfaces.

Vith the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, description being accomplished by reference to the accompanying drawing.

Fig. 1 is a bottom plan view.

Fig. 2 is a top plan view.

Fig. 3 is a longitudinal sectional view on line 3 3 of Figs. 1 and 2.

Fig. 4 is a transverse sectional view on line 1 -4 of Figs. 1 and 2.

The improved sole embodies a reinforcing Sheet 5 of rubberized fabric, and the latter term is to be considered as sufficiently broad to comprehend rubberized cords disposed side by side, said sheet being ordinarily of one material or another commonly used in tire manufacture. Lying upon this sheet and (zo-extensive therewith is a sheet 6 of woven wire which holds the sole against stretching, and interposed between the central portions of the two sheets 5-(5, is a rubber disk 7.

A lower covering 8 of relatively tough and hard though elastic rubber, extends over the lower side of the sheet 5 and projects in all directions beyond its peripheral edge, and this projecting portion of the covering 8 is upwardly thickened, providing a wide fiat continuous rib 9 within whose confines both sheets 5-6 are disposed. Preferably disk 7 has the same characteristics as covering 8.

Flush with the upper side of the rib 9 and integrally joined to it, is an upper covering 10 of comparatively soft cushion rubber which extends over the wire sheet 6, and over the disk 7 This covering and the sheet 6 are bowed into convex form as seen at 11. Directly under this formation 11, the lower covering 8 is provided with a circular thickened portion or boss 12 which occupies substantially the central zone of the sole and is of a diameter approximately two-thirds the width of the sole at this portion, the lower side 13 of said boss being concave. A second boss 14- is formed on the tip of the covering 8 and is transversely elongated and forwardly thinned. Between this boss and the boss 12 are a plurality of transverse ribs 15 and curved longitudinal ribs 16 are disposed at opposite sides of said boss 12.

All parts 5, 6, 7, 8, 9, 10, 12, 14:, 15 and 16 are vulcanized together, providing a unitary article.4 rThe edge portion of the sole may be cut ofii and shaped as desired when applying to a shoe, and such cutting and shaping operations will not reach the fabric and wire sheets 5 6. lhen the sole is tightly in place, the convex formation 11 loses its identity, but this formation insures contact of the sole with the inner sole at all times even if the cement should loosen and hence said sole will not upwardly clap against said inner sole at each step. The disk 7 and boss 12 provide unusual thickness where needed and the shapes of said boss and the parts 14-15-16 insure against slippage on smooth or rough surfaces. The cushion rubber covering 10 makes the sole more comfortable than it would otherwise be.

1. An elastic shoe sole having a boss occupying substantially the central portion of its lower side, said boss being of a diameter approximately two-thirds the width of the sole and having a concave lower side, the upper side of said sole being provided with a convex formation over and co-extensive with said boss.

2. An elastic shoe sole comprising a sheet of fabric of slightly less size than the sole, a sheet of woven wire upon said fabric, a disk of elastic material between said sheet of wire l and said fabric, a covering of relatively hard and tough elastic material upon the lower side of the fabric sheet, said covering being thickened under and beyond the edge of said disk and having a concave formation at the lower side of this thickened portion, said covering being upwardly thickened around the edges a5 of the fabric and wire sheets, and a top covering of relatively soft elastic material upon said wire sheet within the confines of said upwardly thickened portion, the whole assemblage being a unitary structure.

3. An elastic shoe sole having a boss occupying substantially the central portion of its lower' side and of a diameter approximately two-thirds the width of the sole, a second boss on the lower side of the sole at the front end of the latter, a plurality of transverse ribs on said lower side between thel two bosses, and two arcuate longitudinally disposed ribs at opposite Sides of the iirst named boss.

In testimony whereof I have, hereunto aiiixed my signature.

GEORGE W. CABLE;

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