US1291180A - Leather substitute. - Google Patents

Description

a U. V

lto brewing. application filed November To all whom it may concern..-

Be it known that l, MAURICE Someone, a

; citizen of the United States, residing atthe city, county, and State of New York, have a invented a new and useful Improvement in .j is a specification.

My invention relates to a new article of manufacture to be used as a substitute for 1 leather and it is my object to produce a bonded, laminated structure which will have the appearance of fine leather, which will have great tensile strength and frictional resistance, wearing ualities, capable of being i made in any thic mess and which can be pared, skived, creased, polished, embossed and grained in the same way as any leather and with like results.

. fleretofore artificial or substitute leathers in which pyroxylin compounds are used depended upon their backings as well as a firm anchorage between the compound and the backing for their strength and wear, the fabric backing contributing strength and wear and the coating the appearance and simulation of leathe in making my leather substitute ll employ a carrying vehicle upon which, by means of successive coatings on one or both sides of a suitable pyronylin compound in solution, the desired thickness is obtained. This carrying vehicle may be, and preferably is, a textile fabric although any other vehicle in sheet form strong enough to withstand the strains of the spreading machine, such as finely woven wire netting, thin and pliable ,1 metal, paper, asbestos or the like, may be employed.

illhere a non-absorbent carrying vehicle is employed, the relatively high oil content pyronlin compound hereinafter referred to need not necessarily be used, as there is no tendency on the part of the coating to become anchored to the vehicle.

That the carrying vehicle may be readily stripped from the leather substitute when it is desirable to do so it find that a pyroxylin compound having a high vegetable oil content and a low nitrated cotton content accomplishes this. By using such a compound for my first coats a firm anchorage between the carrying vehicle and the compound is revented.

- lifter t e non-anchorage coat or coats have been applied a succession of body coats specification of letters Patent.

Leather Substitutes, of which the following OFFICE.

narration sonnunn, or new roan, it. it, nssiuiton. re tannin someone, or NEW roan, n. r.

'UESTJETUTE.

Patented Jan. ft, 19th.. at, rear. tierial No. reason.

of a suitable plied until the l find that ing of pyronylin compound are apdesired thickness is obtained. a coating compound consistparts 60' 20 parts parts parts 5 parts parts 3parts is anencellent one for this, purpose.

A finishing coat or coats containin a higher nitrated gun. cotton content t an vegetable oil content is finally applied. lhis finishing compound may be obtained by increasing the nitrated cotton content of the under-coat compound.

Un coating and re-coating to obtain the proper thickness the solvents in the pyronylin solution partially redlssolve the surface of the previous coating so that the multiple laminations are firmly bonded together or united.

After a sufiicient thickness has been attained the substitute may be grained between dies in simulation of any desired leather either with or without the carrying vehicle. For many uses the carrying vehicle may be stripped from the leather substitutebut when stitching is employed ll find that it is best to use and retain a fabric as the carryin a vehicle to insure permanency of the stitch as the product while supple and tenacious is not fibrous and the stitching has a tendency to tear out.

Multiple coatings should be employed as l have found that'when sufiicient pyronylin solution has been spread to produce the de sired thickness at one time the solvents do not evaporate readily and an unsatisfactory product results.

My new article of manufacture may be distinguished from prior materials by the fact that the strength is in the laminated coating and not in the carrying vehicle, by the fact that the coating may be removed intact from the carrying vehicle and by the fact that there is no anchorage between the carrying vehicle and the coatings.

ll claim -l. As a new article of manufacture, a leather substitute: composed solely of a sup- 11a compound built ple. sheet built up of successive layers of pyroxylin compound united into an integral structure of suflicient thickness to resist the strains of ordinary use.

2. As a new article of manufacture, a leather substitute composed of a carrying vehicle and a facing of supple pyroxylin up 'of successive layers united into an integral structure of sufficient thickness to be removed intact from the carrying yehicle.

3.,As a new article of manufacture, a leather substitute composed of a carrying vehicle and a facing of supple pyroxylin compound built up of successive layers unitedinto an integral structure there being no anchorage between the carrying vehicle and the facing.

4. As a new article of manufacture, a

leather substitute composed of a supple sheet built up of successive layers of pyroxylin compound united into an integral structure,

one face of which is a compound of pyroxylin with a relatively high oil content and the other face of which is a pyroxylin compound with a relatively high nitrated cotton content.

5. As a new article of manufacture, a leather substitute composed of a carrying vehicle, a coating of pyroxylin compound having a relatively high oil content and a superimposed coating of pyroxylin compound having a relatively high nitrated cotton content,'there being no anchorage between the pyroxylin compounds and the carrying vehlcle.

6. The method of making leather substitute comprising applying successive coatings of a pyroxylin compound to a carrying pable of removal intact from the carrying tent, until suflicient thickness is obtained to tute comprising applying successive coatvehicle until sufiicient thickness .is obtained 40 to resistfithe strains of ordinary use, the united, built-up pyroxylin layers being cavehicle. I

7. The method of making leather substitute comprising applying successive coatings of a pyroxylin compound to a carrying vehicle until suflicient thickness is obtained to resist the strains of ordina use and finally removing the united, bui t-up pyroxylin coatings intact from the carrying vehicle.

8. The method of making leather substitute comprising applying successive coatings of a yroxylin compound having a relatively igh oil content to a carrying vehicle and re-coating with a pyroxylin compound having a relatively high nitrated cotton conresist the strains of ordinary use, the united built-up coatings being capable of remova intact from the carrying vehicle.

9. The method of making leather substiings of apyroxylin compound having a relatively high oil content to a carrying vehicle, applying successive coatings of a pyroxylin compound having a relatively high nitrated' cotton content and finally removing the united, built-up pyroxylin sheet from the carrying vehicle.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

MAURICE SCHEUER.

Witnesses:

ROBERT B. Knmcons, MAY M. -L1rr.