US410839A

US410839A - Elastic webbing

Info

Publication number: US410839A
Authority: US
Publication date: 1889-09-10
Anticipated expiration: 1906-09-10

Description

(Specimens.)

\ E. LAMB.

ELASTIC WEBBING.

N0.-410,839. Patented Sept. 10,1889.

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UNITED STATES PATENT ()FFICE.

ELIJAI-I LAMB, OF CAMDEN, NEIV JERSEY.

ELASTIC WEBBING.

SPECIFICATION forming part of Letters Patent No. 410,839, dated September 10, 1889.

Application filed September 6, 1887. Serial No. 248,854. (Specimena) To all whom it may concern.-

Be it known that I, ELIJAH LAMB, a citizen of the United States, and a resident of Camden, Camden county, New Jersey, have .webbing and to cheapen and simplify the manufacture thereof, and at the same time impart an ornamental finish to the edges of said strip, as fully described hereinafter.

In the accompanying drawings, Figure l is a perspective view of a strip of elastic webbing made in accordance with my invention. Fig. 2 is a diagram illustrating the method of Weaving adopted in carrying out my invention. Fig. 3 is an enlarged view illustrating more clearly the disposal of the threads; and Fig. 4 is a transverse section on the line 1 2, Fig. 3.

Narrow strips of elastic webbing are now produced upon what are termed swivel or gang looms, employing a special shuttlerace and shuttle for each strip of 'fabric to be woven. This necessitates the use of a very wide loom, if a large number of strips are to be woven thereon, and close and constant attention is demanded on account of the number of independent shuttles which are used, each shuttle being necessarily small and of limited yarn-carrying capacity. The formation of the usual selvages on the elastic webbing is objectionable, because the weft-threads as they are thrown across the shed bear upon and cut into the outer strands of rubber and thus detract from the elasticity of the same and cause puckering of the edges of the strip, and when this elastic webbingis used a constant rubbing of theweft-threads against the outer strands of rubber cuts them in small sections, often rendering the first and second strands useless.

In carrying out 'my invention I use an ordinary loom, and I arrange the Warp-threads with the elastic strands g in sets a, with intervening spaces 1), the outer sets of warps a, being few in number, as they serve simply as selvaging-Warps' and are independent of the woven strips. The-weft-thrcads (Z are introduced by picking the shuttle from side to side of the loom, as usual, so as to produce a series of woven strips located side by side, with intervening spaces across which the weft-threads extend from strip to strip, and from the outer strips to the selvaging-warps. Thus the outer strands of rubber g are not injured by the returning of the weft-threads, and are consequently in perfect condition when they leave the loom, and all puckering and wrinkling of the edges of the strip being effectually prevented, as this puckering is caused by the breaking of the strands of rubber. After the weaving the fabric is severed on the line m :20, so as to separate the strips and form on the opposite edges of the strip a fringe, due to the projecting weftthreads, thus imparting an ornamental finish to each edge of the strip, the fringe being, if desired, cut to form ornamental patterns.

In order to prevent the raveling out of the warp-threads at the edges of the strips, a number of warps at and near each edge of the strip are tied or bound together and to the wefts by means of a doup-thread f, as shown in Fig. 3.

It will be understood that the elastic Webbing, when in use, has a constant strain upon itas in suspenders, or in elastic garters, for instance so that it will be seen that it is desirable to have an articlein which the strands of rubber are all intact.

I claim as my invent-ion- 1. A strip ofelastic webbing havingabody composed of warp-threads and disconnected Weft-threads, longitudinal elastic strands embedded in the fabric, and doup-threads tying the edge warps to the weft-threads, substantially as described.

2. A strip of elastic Webbing havingabody composed of interwoven warps and wefts, elastic strands embedded therein, doupthreads tying the edge warps of the strips, and fringed edges formed by projecting ends of the wefts, all substantially as described.

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

ELIJAII LAMB.

WVitnesses:

WILLIAM D. CONNER, HENRY HOWSON.