US2227573A - Pile fabric - Google Patents

Description

Jan; 7 1941. W. E. CLARKE PILE FABRIC Filed April 23,

uNvENTOR M'Wmm @Cia/7?@ ATTORNEY N Q Qin@ s N Patented Jan. 7, 1941 UNITED STATES PATENT OFFICE Whittall Associates,

Inc., Worcester,

Mass., a corporation oi' Massachusetts Application April 23, 1940, Serial No. 331,115

2 Claims.

'Ihis invention relates to woven pile fabrics, and especially such as are used in the manufacture of rugs and carpets in which a design is outlined by omitting tufts of the pile fabric to create 5 such designs, and which maybe produced on standard looms by proper control of the operations.

Various methods have been employed for producing carpets the designs in which have an emj@ bossed or bas-relief effect, and the working of designs in carpets by floating the pile warp yarns between certain of the weft shots and raising the pile warp to form tufts between other of the weft shots is well known in the art.

it In the construction of4 carpets and rugs containing designs so outlined it is obvious that those raised tufts forming the boundaries of the design are less resistant to the weight imposed upon them than are those tufts which are supported ttl by each other in the body of the fabric, and while it is the intention that the tufts along the boundaries should, to some extent, splay and cover the unraised warp it is desirablethat they not be so crushed that the unraised pile area forming mi' the outline of the design will, in effect, become wider and objectionable in appearance.

My invention aims to provide a means whereby the boundaries of the design outlined in the Inanner indicated are enhanced in appearance, and

3U' so arranged that they will oder greater resistance to the weight put upon them, and which will enable such boundaries to retain their original appearance much longer than heretofore.

In the drawing- Figure 1 is a perspective view of a carpet or rug embodying my invention, the rows of tufts being shown extended to show more-clearly the arrangement of staggered end tufts.

Figure 2 is a plan View of a carpet showing gim ure and ground areas constructed according to my invention.

For purposes of illustration I have shown in Fig. l a carpet constructed of two pile warps 3 and il, stuiier warps 5, upper weft shots 6 and lower weft shots l, binder Warps 8 and 9 which cross the weft shots above and below, holding the weit shots in place against the stuffer warps. In weaving the fabric the pile warp yarns are 50 raised over pile wires in the usual way to form loops extending upward between adjacent upper weft shots 6, and upon withdrawal of the wires the loops arel cut at the top to produce the tufts i I.

M For the production of a fabric according to my invention I use a Wilton loom of the usual type, a jacquard mechanism controlling the manipulation of the pile warp yarns 3 and 4. In the construction of the fabric I employ three harness frames, two of which are filled with pile yarns, and a yarn from each of the two harness frames is drawn through a split in the reed. In operation the jacquard raises the yarns of the two iilled frames over an inserted pile wire, except at certain predetermined points along the boundary 1 of the design, at which points the jacquard raises the third or unfilled frame causing the pile yarn to remain buried in the back of the fabric. This buried or unraised pile creates a space IU between the raised tufts il of adjacent areas and outlines such design as is desired.

This outline is further accentuated and its resistance increased by staggering the end tufts it on each row warp-wise, thus giving protection to those end tufts which form the inset portions of m the outline. In its preferred construction these staggered end tufts alternate as they face each other on contiguous design areas.

In constructing a fabric according to my in-v vention the pile warp yarns 3 and li are raised m throughout the surface of the ground and ligure areas, except along the lines ill which outline the It will be seen that my invention of staggered border lines of raised tufts both enhances the appearance of the fabric and overcomes a defect in previous constructions resulting from the tendgg ency of straight border lines of tufts to be iiatn tened in use.

What I claim is:

l. A iabric comprising the combination of stuifer warps, weft shots lying above and below 4o the stufier warps, binder warps crossing the weft shots above and below and binding the weft shots in place, and a pair of sets of pile warps lying Within the body of the fabric with the warps of both sets raised between predetermined adjacent weft shots, and in groups, to provide a pile surface, and unraised between certain other adjacent weft shots to outline a design in said pile surface, the end pilelwarps along the boundaries of said raised pile groups being raised only every other row weftwise.

2. A fabric comprising the combination of stufer warps, weft shots lying above and below the stuier warps, binder warps crossing the weft shots above and below and binding the weft shots in place, and a pair of sets of pile warps lying within the body of the fabric with the Warps of both sets raised between predetermined adjacent weft shots, and in groups. to provide a pile surface, and unraised between certain other adjacent weft shots to outline a design in said pile surface, the end pile Warps along the boundaries of said raised pile groups being raised only every other row weftwise, the staggered raised pile tufts alternating as they face each other along adjacent boundaries.

WILLIAM E. CLARKE.

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