USRE7112E - Improvement in carpets - Google Patents

Description

2 Sheets-'Sheet 2.

W'. WALLACE.

CARPETS.

Ressued May 16, 1876.

MPETERS, PHOTO-LITHOGRAPHER, WASHINGTON.

of' the reed in weaving.

UNITED STATES PATENT GFFICE.,

WILLIAM WALLACE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HIMSELF AND CHARLES MGALLISTER, OF SAME PLAGE.

IMPROVEMENT IN cARPETs.

Specification forming part of Letters Patent No. 104,232, dated June 14, 1870; reissue No. 4,904, dated May 14, 1872; reissue No. 7,1 l2, dated May 16, 1876; application filed April 3, 1876.

'thick and thin filling or weft-threads, the

warp consisting of' a series of Woolen threads arranged in sets, four threads toa set, and these four threads passing through one space Fabrics of this class present two wearing-surfaces, produced by so dividing the warp-threads for the reception of the thick lling that one portion ot' said warp-threads forms one surface, and the other portion the opposite surface of the f'abric.

In my improvement the relative arrangement of warp-threads Vand thick llin g remains as usual, my improved carpet fabric being produced by dividing the Warp-threads, for the reception of the thin filling or binding threads,

in the manner fully explained hereafter, so that the said fabric shall be more compact in texture, and have a finer surface than ordinary fabrics of this class, Without the consumption of more material than the latter require.

In the accompanying drawing, Figure l, Drawing No. l, is a diagram representing the disposal of the threads of an ordinary damask carpet; Fig. 2, a diagram illustrating the arrangement of the threads in my improved fabric, and Figs. 3 and 4, Drawing N o. 2, are views representing harness employed in carrying out my invention.

In order that my invention may be more readily understood, I will first proceed to describe the mode of disposing of the weft and Warp threads in ordinary damask carpets, reference being had to'Fig. l, Drawing No.1, which represents a portion of' such a carpet with the threads separated or not beaten up. Thus, in Fig. 1, A represents one set oi' four Warp-threads, A1 an adjoining set, and A2 a third set. It should be understood, however,

that although the Aterm warp-thread 7 is used, each of the threads a a and b b of each s'et may consist of more than one strand, according to the quality of the carpet to be produced. These warp-threads are controlled by the usual jacquard apparatus, which is too well known to need description here.

The weft-threads consist of a series of thick llingthreads, B, B1, B2, and B3, and thin iillingthreads D, D1, D2, and D3, arranged alternately, as shown in Fig. l, the thick lling-threads serving to impart substance to the carpet, and the thin threads serving to impart strength as binding-threads.

It will be observed, on referring to the illustration, FigQl, of a common damask carpet, that the thick lling-threads B B1 B2 B3 pass over the threads aand under the'threads b of the warp of each set. The thin fillingthreads also pass over two and under two threads of each set; but While the threads D and D2 pass over the threads a and under the threads b 'of the sets A A2, and under the threads a and over the threads b of the set A1, in the case of .threads D1 and D3 this order is reversed. This disposal of the thin filling-threads D Dl D2 D3 serves to bind the fabric, but at the same time renders the carpet of so open a texture that lodgments for dust and dirt are afforded, while the threads of one color beneath can be distinguished from abovethrough the interstices between threads of another color; consequently the pattern of the carpet is rendered more or less spotted and unsightly. The aim of my invention, which I will now proceed to describe, has been to overcome this defect of ordinary damask carpets.

Un reference to Fig. 2, which illustrates my improved carpet with the threads separated,

it will be observed that the warp consists. of a series of sets of threads, four threads in each set, in the present instance each thread bein g being composed of' one or more strands, as circumstances may require, the weft consisting of alternate thick and thin filling-threads in fact, precisely the same threads may be ernployed as in making the common damask carpet described above. l

For the passage of the thick lling-threads the warp-threads are divided as in the ordinary carpet; but'for the passage of the thin filling the said Warp-threads are difierently divided, so that instead of passing over two warp-threads of one face, and under two threads of the opposite face in each set, it passes alternately over and under two threads, of which one is a thread of one face and the other a thread of' the other face of the fabric. This plan of operating the warp-threads involves the necessity of employing mechanism for the purpose, for while the ordinary jacquard apparatus will serve to raise the threads for the thick filling, other appliances are necessary for operating the threads for the. thin lling.

I will briefly describe the mechanism which I have employed for carrying my 'invention into effect, referencebeing had to Drawing No. 2, inwhich Figs. 3 and 4 show the harness, the lines a and a representing the separated warp-threads, and being the point where the weft is beaten up. I dispense with the usual comber-board ot' the jacquard apparatus, and in place of the same use the shafts S S, all of which are connected to the warp-thread by the harness in the'usual manner, and these shafts are controlled by mechanism operated from any working part of the loom, independently of the usual jacquard mechanism, the duty of which is to control the warp-threads for the thick lling, while the threads to be separated for the vthin filling are controlled by the shafts S, and the independent mechanism which operates th same.

The harness of the ordinary jacquard apparatus passes the shaft S freely, but has knots with which the shafts come in contact when elevated.

Different mechanical devices may be employed for carrying my invention into effect, but the above, being simple andv effective in practice, has beenselected to enable those familiar with the art of weavn g to understand how my improved carpet can be manufactured. It is this peculiar disposal of the warp-threads, in respect to the thin filling-threads, which renders my improved carpet more compact in texture, and liner as regards its surface, than ordinary damask carpet.

Iv claim as my invention and as a new manu'acture- A damask-carpet fabric, in which the warpthreads of a set, onA either side of the thin iilling, consist one portion of the threads of one face, and the other portion of the threads of the opposite face, of the fabric, as set forth. In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM WALL AGE.

Witnesses HARRY HowsoN, Jr., HARRY SMITH. Y

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