US100678A

US100678A - Improvement in soles of rubber boots and shoes

Info

Publication number: US100678A
Authority: US
Publication date: 1870-03-08
Anticipated expiration: 1887-03-08

Description

atei-tt @with FREDERIGK M, sentano, oF rNew YORK, Y.

Letters Patent No. 100,678, dated. March, 1870.

l e nvnmtw*mariana* IN soLEs or' RUBBER eoo'rs AND SHOES.

The` Schedule referred te in these Lettera Patent and making part of the same.

To all whom it may concern:

Be it known that I, FREDERICK M SHEPARD, of `the city, county, and State of New York, have inscription thereof, reference being had to the accom. pauying drawings making part of this specification, in

whiche Figure lis a longitudinal sectionof the sole of aboot on my improved plan;

Figure 2, a cross-section of the same; and e 11ignre3,a separate view ofthe pertbrated metallic platefwhich makes part of the sole,

The saine letters indicate like parts in all the figures. 1

The object of my said inventionA is to render the India-rubber soles'oflndia-rubber boots and shoes more rigid than'when `made of India rubber alone. This is important, as such boots are usually employed by y.persons wl1o,in their business, are often required to walk on rough surfaces, and to perform duties, such as forcing a spade into` the earth, requiring a more rigid sole than can be made of India rubber alone; and to this end, v

My said invention consists in combining with a Vulcanized India-rubbeijsole for a boot or shoe, `a perforated metal plate interposed between two layers of India rubber, .so that the surfaces of the two layers e shall become nnitedin the apertures or meshes, and

around the edge of the metallic plate, while in the green or plastic state, and become permanently united by the process of vulcanization.

` In-the accompanying drawings.- v a represents a metallic plate, by preference made of sheetiron, of a form and length suiicient to extend from the heel to within a short distance of the toe, and a little narrower than the intended sole.

Square or `other-formed holes, b, are made in the said plate at given distances apart.

\Vhile the India rubber intended for the sole is yet in what is known as the green or plastic state, and before the outer. layer, c, of the sole is put on, the metal plate e is applied to the surface ofthe main part d, and `then the outer layer c is applied, taking care, by suitable pressure, to cause the two surfaces of India rubber'to unite around the edges, and in the apertures 'ofthe plate. After this, the rubber is vulcanized.

The soie of a boot or shoe thus made will be more rigid, and hence better suited for many purposes than if made of India rubber alone;

What I claim asnew, and desire to secure by Letters Patent, isw g A vulcanized India-rubber sole for boots. or shoes, strengthened by a perforated metallic plate interposed between the inner and outer layers before vulcanizing, and secured substantially in the manner set forth.

FREDERICK M. SHEPARD. Witnesses:

WM. H.-B1sHoP, ALnxfB. BISHOP.