US1347775A

US1347775A - A cobpobation

Info

Publication number: US1347775A
Authority: US
Publication date: 1920-07-27
Anticipated expiration: 1937-07-27

Description

H. M. BURR AND G J. INGRAHAM.

INSULATING, WATERPROOF SOLE FOR USE ON BOOTS AND SHOES. APPLICATION FILED IULY 2 \919.

1,347,775. Patented July 27; 1920.

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Rubber and Asbgdus Fiber UNITED STATES PATENT OFFICE.

HARRY a. noun; or mnnnnrown, ennenon'en zr. INGRAHAM, or. wns'r HARTFORD,

CONNECTICUT, ASSIGNORS TO THE OHIO MFG. (30., OF MIDDLETOWN, CONNECTICUT,

A CORPORATION.

INSUJ LA'IIHG, WATERPROOF SOLE FOR USE ON BOOTS AND SHOES.

To all whom it may concern:

Be it known that we, lIARRY M. Bonn and GEORGE J. INGRAHAM, citizens of the United States, residing, respectively, at Middletown, in the county of Middlesex, and at West Hartford, in the county of Hartford, and State of Connecticut, have invented a new and useful Improvement in Insulating, Waterproof Soles for, Use on Boots and Shoes; and we do hereby declare the following, when taken in connection with the accompanying drawmgs and the characters of reference marked thereon, to

be afull, clear, and exact description of the.

same, and which said drawings constitute partof this application, and represent, in-

Figure 1 a plan view of an insulating, waterproof rubber sole embodying our in vention.

Fig. 2 an enlar ed view thereof in transverse section on t e line 2-2 of Fig. 1.

Our invention relates to an improved insulating, waterproof sole for use on boots and shoes, either by the manufacturer or by repairers, the object being to provide a light and durable sole characterized by its ability to protect the foot from heat and cold.

lVith these ends in view, our invention consists in a twoart insulating waterproof sole consistin o a lower portion or wearing layer, an a separately fabricated up per portion or insulating layer incorporated with the upper face of the lower portion and having a component of insulating material such as hair.

Our invention further consists-in an in-' sulating, waterproof sole composed of a waterproof wearing portion and an insulatin portion, the two portions being indepen ently fabricated and united by incorporation, and the insulatin portion containing animal hair anda bin e Our invention further consists in certain details and features as will be hereinafter described and pointed out in the claims.

In carrying out our invention, we preferably produce by the process commonl known as sheeting, the sheets fromwhic the lower or wearing portions of the soles are cut, these sheets consisting of rubber or other vulca'nizable gum combined with asbestos fiber which by preference is arranged transversely to the axis of the fin- Specification of Letters Patent. 3 Patented J 1 27', 1920 Application filed July 2, 1919. Serial No. 308,160.

- during the vulcanizationof the binder, and

because it even a ears to assist the vulcanizing process. owever, in place of animal hair, we may employsilk or cotton, or hemp, or other vegetable fiber. As a binder for the hair or fiber, we employ rubber or some compound containing rubber. Thus the rubber may be diluted with other gums, such as balata gum or gutta ercha.

The thickness of. the respectlve sheets fabricated for the upper and lower portions of the soles, will depend, of course, upon the use to which they are to be put, such as the character of the boots and shoes on which they are to be used, climate, etc., etc.

The two sheets having been produced as described, are superimposed one upon the other and united with the resultant production of a composite sheet having distinctive upper and lower portions adhered together but remaining segre ated, the segregated sheets being united by the softening and flowing of the rubber or other binder used in their independent fabrication. Out of these composite sheets, soles are cut of the recpllired size, the cutting being done so that t e fibers in the relatively thick wearing portion are arranged transversely, and therefore lengthwise with respect to the axes of the soles, since in this manner the soles are made more flexible lengthwise than crosswise, it being desirable that the soles shall be flexible lengthwise, but as rigid as possible crosswise.

After the soles have been cut from the composite sheets, they are cured b being placed in suitable molds in which t ey are subjected to heat and pressure, the curing process being the same as commonly emponents of the lower portions of the soles, and the hair and rubber components of the upper portions of the soles are, of course, mixed with suitable vulcanizing a ents pre paratory to sheeting. If desired the composite sheets may be vulcanized before the soles are cut out instead of cutting out the soles from the raw sheets and then vulcanizin the soles as above described.

bur improved sole, in addition to furnishing the waterproofin qualities of rubber soles as heretofore used, provides for insulating the foot from heat and cold which are transmitted through the ordinary rubber soles and constitute an objection to their use. At the same time, our improved sole is not made appreciably heavier or bulkier than the ordinary sole, while greatly increased in efficiency and comfort.

-We claim 1. Ks a new article of manufacture, an insulating waterproof sole for boots and shoes comprising a lower or wearing portion and an upper or insulating portion, these portions being separately fabricated and united and the lower portion containing rubber an asbestos liber which latter is arranged transversely, or substantially transversely, to the axis of the sole, and the upper portion containing a component of insulating material.

2. A a new article of manufacture, an insulating waterproof sole for boots and shoes,

consisting of an upper insulating portion and a relatively thicker lower or wearing portion, the said portions being separately fabricated and subsequently united and incorporated, and the upper portion containing a non-absorbent animal fiber and a binder therefor.

3. As a new article of manufacture, an insulating waterproof sole for boots and shoes, consisting-of a separately fabricated lower portion and relatively thin separately fabricated upper portion, the said portions being united and incorporated, and the upper portion containing animal'hair intermingled with a vulcanizable gum as a binder.

l. As a new article of manufacture, an insulating waterproof sole for boots or shoes, consisting of an upper or insulating portion and a separately fabricated lower or wearing portion, united and incorporated by heat and pressure, the upper portion containing animal hair and rubber, and the lower portion containing rubber and mineral fiber.

In testimony whereof we have signed this specification in the presence of two subscrilr ing witnesses.

HARRY M. onn. enonen J. INGRAHAM.

\Vitnesses:

FRANK E. FERREE, Enw. H. V. BALL.