US1848611A - Joskph eekks - Google Patents

Description

patented Mar. 8, 1932 .rosmn FIBRE; F PHILADELPHIA, PENEQSYLVANIA KETHDD OF WEAVING FILE FABRIC Application filed February 24, 1931 Serial F0. 517,778.

cut, others, uncut, so as to form what is commonly known as frieze material.

The object of the invention is to provide a new weave of pile fabric.

A further object of the invention is to provide a method of weaving fabric in which two pieces of fabric are woven with their faces together, and are severed or separated without requiring the cutting of the pile threads and which, when so severed, will each have difierent lengths of pile loops.

According to the invention, the weave comprises two sheds of warp threads, and each shed is provided with two threads of pile warps, one of said pile warps on certain picks of the loom being adapted to cast its loop intermediate'of the sheds, and the other pile warp being adapted on certain other picks to cast its loop through the space intervening between the sheds, and to the outside of the opposite shed.

The drawings illustrate an embodiment of the invention and the views therein are as follows:

Figure 1 is a longitudinal section on an enlarged scale through the double fabric, prior to separation,

Figure 2 is a like view of the lower fabric after operation,

Figure 3 is a similar view showing the lower pile threads severed. v

The fabrics of Figure 1, which I designate ,6 and 7, arerespectively provided with warp threads A and B and C and D, respectively. They weave is accomplished in cycles of six picks of weft thread 8.

The upper fabric 6 has incorporated therewith pile threads 9 and 11, while the lower fabric 7 has pile threads 12 and 13.

On the 1st pick offithe loom, as shown in Figure 1, the pile threads in both the fabrics are regularly woven in the sheds, while on pick 2 pile warp 11 of fabric 6 and pile warp 12 of fabric 7 are extended between the fabrics to form the loops 14 and 16, respectively, but

extending over the weft threads which are thrown by the harness into position.

On the 3rd pick, the pile threads return to the same position as in pick is, while in the 4th pick they change positions, as does also the warp threads.

On the 5th pick, pile thread 9 of fabric 6 is cast on the outside of the lower fabric 7 to form the loop 17, while pile threads 13 of 1fabric 7 is cast above pile fabric 6 to form the n pick 6 the pile threads go back to the same position as they were in pick 4, while in new pick 1 they return to the same positions as they were in original pick 1.

In order to separate fabrics 6 and 7, it is necessary to draw out the weft threads 8' and 8", whereupon we have the resulting material shown by Figure 2.

When the outer pile loops are cut, as at 19, we have what is called out and uncut, or frieze fabric.

In the weave of this fabric, it will, of course, be ordinarily necessary to use gauge wi res for inserting the weft threads 8. These gauge wires are merely for the purpose of supporting the shuttle, the height of the loops being adjusted by means of the gear motion on the loop, or by the height of the gauge.

While-in the weave shown in Figure 1 the intermediate weft threads 8' are shown as being simultaneously placed in both fabrics, this is not necessary because, if desired, 1 may, on the 2nd pick, lay one intermediate weft thread 8 and one outside weft thread 8" and then on the 5th pick alternate so as to lay the other intermediate weft thread 8' and the other outside weft thread 8".

In this way on the 3rd and 5th picks there would always be laid one intermediate weft thread and one outside weft thread. By this latter method it may be possible to dispense with the gauge wires,.although-it is preferable to use them.

By this method of weaving two-length pile or cut and uncut fabric, an increase in roduction over the present methods of pro ucing the same goods is assured.

0f course, the weave illustrated herein -may be modified in various ways without departing from the invention herein set forth and hereafter claimed.

The invention is claimed as follows:

1. The method of forming two=length=pile fabrics, consisting of weaving interconnectedly together two Webs of fabric, forming the shorter loops of pile thread between the two webs, and the longer loops of each web beyond the opposite side of the other web.

2. The methodtof simultaneously forming two ile fabrics, each having difierent length pile threads thereon, comprising a warp shed for each of said fabrics, pile threads and weft threads for each of said fabrics, certain of said weft threads of each web being drawn to a position intermediate the sheds to form short loops of pile thread, and certain others of said weft threads of each web being drawn to positions beyond the sheds of the other web in order to form other and longer loops of pile thread,

3. A method of forming pile fabrics, consisting in weaving interconnectedly two sections of fabric, weaving a plurality of temporary pile supporting threads with the two sections, and positioning some of the tem porary pile supporting threads adjacent the outside faces of the individual webs of fabric, and others between the individual Webs of fabric, weaving a series of warp threads to interlace weft threads in each web, then looping over thepile supporting threads intermediate the individual webs, then returning to the weft threads of the web which they interlace for a predetermined distance, then looping said pile threads over said pile supporting threads to the outside of the opposite web, and then again returnin to the weft threads of the web which they mterlace for a short distance, and then again looping said pile threads over said pile supporting threads intermediate said webs, thereby forming two series'of loops in each of said fabric sec tions, .each series having loops of different lengths, and then withdrawing the pile su orting threads to permit separating of the abrics.

In testimony whereof I have signed my name to this specification.

JOSEPH ERKES.

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