US48481A

US48481A - Improved water-proof soles

Info

Publication number: US48481A
Authority: US
Publication date: 1865-06-27
Anticipated expiration: 1882-06-27

Description

UNITED STATES i PATENT OFFICE.

JoHN W. CCEUHN, 0E NEW HAvEN, CONNECTICUT, AssIeNon ro HrMsELE y AND O. F. CASE, OF SAME PLACE.

IMPROVED WATER-PROOF SOLES.

Specification forming part of Letters Patent No. 48,481, dated Junev 27, lS65.

To all whom it may concern.-

Beit known that I, JOHN W. COBURN, ofNew Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in'the Manufacture of Water- Proof Soles for Boots and Shoes; and I do herebydeclare the following to be a full, clear, and exact description of the same,when taken in connection with the accompanying draw ings and the letters ot" reference marked there on, and which said drawings constitute part of this specitication, and represent, in-

Figure 1, a view of whole sole and heel; Fig. 2, a half-sole; Fig. 3, a section of the same; and Fig. 4, section of half-sole, the rubber thicker than its edging. Y

My invention relates to an improvement in the manufacture of water-proof soles for boots and shoes, whereby the water-proof sole may be securedI to the boot or shoe inthe usual manner of securing` leather soles; and it consists in forming the sole of indiarubber or similar water-proofcompound with an edge ot' leather cemented around it. y l

To enable others skilled in the art to make and apply my improvement, I will proceed to fully describe my manner of so doing.

. In describing my invention I use the word boot7 as including every description of boots or shoes. y

I rst construct a mold ot the form and size required for the sole, whether it he for whole sole, Fig.`1, half-sole, Fig. 2, or heel, Fig. l. I then take a narrow strip of sole-leather, place it in the -mold around the edge, coating the inner edge of the said leather strip with the proper cement for uniting rubber to the leather. The cement I use is the common rubber cement, composed of about sixteen parts litharge, thirty-two parts india-rubber, one part sulphur, ground together and dissolved in camphene or benzine, one gallon to twelve pounds of the compound. I then till the spaces within the said leather strip with india-rubber, clear, fabricated, or any of its compounds or equivalents therefor; then cure the said rubber, &c., in the usual manner, which completes the sole.

I cure my sole in similar manner as for curing common india-rubber-that is, while in lthe mold place them in an oven heated to about great objection, which myinvention entirely A overcomes. y

If in applying my improved sole it shall be deemed expedient to introduce gum between the rubber part of the sole and the sole of the l boot, it may be done in the usual manner; but it is not essential.

The rubber may be, and Iprefer to makeit, a little thicker than its leather rim, as seen in Fig. 4.

The outer surface of the rubber part of the sole may be covered in whole or simplyvover the seam by thin rubber cloth or other material cemented on, and thejoint maybe a butt or a lap and butt one, and may be corrugated, roughened, or otherwise prepared to prevent slipping.

Having thus fully described my invention, I would state that Iam aware that a sole has heretofore been made of three parts-viz., an india-rubber sole, a leather insole or lining, and a border or binding' of leather, and cemented or sewed together; butsuch soles have not been found of sufficient resistance to Wear to become useful. I lay no claim to any such sole; but g What I do claim, and desire to secure by Letters Patent, is i A sole composed of an interior of rubber and a margin of sole-leather cemented together by a vertical butt-joint, and of uniform thickness, or nearly so, Without an insole, and made substantially as herein described.

JOHN W. COBURN.

Witnesses:

J CHN E. EARLE, MARY A. EINE;