US1761005A - A cokpoba - Google Patents

Description

' Patented June 3, 1930 when ALFRED BURNS, or" nas'rnnivirron, rirnssaonusnrrs, nssrenon 'ro wns'r stresses manuraorunrne coMrAiiY, TION on MASSACHUSETTS METHOD OF No Drawing.

7 This inventioh relates to the manufacture of printed woven fabrics and especially to the manufacture of those in which the pattern is printed on the warp threads'before they are drawn into the loom and woven into cloth. 7

According to one method which has been commonly employed in the manufacture of printed fabrics of this type the webof warp threads from'which the fabric isfmade is first drawn into a loom and woven together with widely separated filling threads, (about two picks to the inch is a common practice for this purpose), and then the web of warp threads thus woven together is passed through a printing machine by which the desired pattern is printed thereon.v After the printing operation itis necessary to steam the warp threads in order toproduce a fast color and when the printed warps have been steamed and dried and otherwise treated they are then wound on a warp beam preparatory to being drawn in to the loom for the weaving of the printed fabric.

web of warp threads can be wound on the warp beam, however, it is necessary to depick said w b, this term referring to the operation of removing the temporary filling threads which have been woven into the web of warp threads prior to the printing-operation. I a I The purpose of thus weaving these temporary filling threads into the warp threads is to-hold each individual warp thread in its proper position relative to the other warp threads during the operation of steaming and drying and any other operations between that of printing and winding the warp threadson the warp beainof the loom.

In order to thus weave Before the of warp threads is necessary to draw the web lhis drawing into the harnesses of a loom. in operatlon 1s a slow web of warp threads. Moreover, considerable time is necessarily required in weaving the temporary filling into the web 'ofrwarp threads.

and thus saves "This header, which may the temporary fill ing thread into the web of warp threads it and tedious one, as is also the other operation of de-picking the or nasrnanrron, ivmssnoiinsnrrs, A 'conronn- MAEEIEG rnin'rnn FABRICS Application filed. December 5,1928; Serial No. 324,069.

invention is to provide. a novel method of printing the web-of warp threads and han= dling said threadspreparatory to winding them on the warp beam of the loom which avoids the necessity of vweaving the .temporary filling into the web of the time consumed the web of threads into the loom in which the temporary filling is woven, weaving said filling into the web and then (lo-picking the web. d

In accordance with myinvention I provide a web of warp threads fromwhich the print ed fabric is to be made and-I first form 'a so-called header on one end'of this web.

inches wide, may COIIVGlllQlltlY-bl formed by a weaving operation, that is, a filling thread may be interlaced with the warp threads either by hand or by a loom to form a woven band or head of the desired width which extends acrossthis web and ties all the warp threads together. This header may be formed on the end of the web of warp threads while said web is'wound on awarp beam.

After the webof warp threads hasthus been providedwiththe header, said web is unwound from the warp beam and passed through aprinting machine by which the do sired pattern is printed thereon. During the printing operation the individual threads are entirely disconnected fromeaoh; other except at the very end-wherethe header is woven. The warp threads are simply drawn from the warp beam in parallel relation through the printing machine, which prints the desired pattern on the web.

The printed warp threads aretaken from the printing machine in web form, and they 1 are then formed into a warp chain in any usual way, and while in the form ofthe warp chain they are subjected to the steaming, drying and any otherdesired operations preparatory to the beaming After the warp threads in, warp chain formation have been thus processed, thewarp chain is converted back into web formation in which each individual warp thread has the samefposition relative to' theother. Warp threads both longitudinally and as 5 warpithreads in drawing be six or eight I operation.

it had when passing through the printing machine. This web is then wound on a warp beam of a loom in a manner usually employed for warp beaming or slashing.

I find that the necessary handling of the warp chain involved in the steaming, drying and other operations does not appreciably disturb the proper relation of the individual printed warp threads to each other so that when the printed warp threads are taken from the 0 rain form and wound on the warp beam the individual warp threads will remain in correct relation to each other both laterally and longitudinally so that the pattern which has been printed on the web will not be distorted. In other words, the pattern as it appears on the web of warp threads that is wound on the warp beam from'the warp chain will appear undistorted and for all practical purposes will be as perfect as it appears on the web of warp threads as it leaves the printing machine After the printed warp threads have been wound on the warp beam above described then they may be drawn into the loom on which the printed fabric is to be woven and the weaving of the printed fabric may then proceed as usual.

The formation of the heading at the end of the web of warp threads is important as this holds the ends of the individual warp threads in proper relation and enables the web of warp threads to be introduced into and carried through the printing machine without any shifting of the warp threads relative to each other and it also maintains the individual warp threads in proper relative position when the warp chain is being handled preparatory to rewinding the warp threads on the warp beam of the loom. Because the warp threads are thus tied together at one end by the header they are held in proper relation to each other during the start of the winding of the warp threads from the warp chain onto the warp beam of the loom and as the winding continues the warp threads will pass from the chain formation back to the web formation without losing their correct relative positions or causing any appreciable distortion of the pattern which has been printed on the warp threads.

With my invention, therefore, it not necessary to perform the preliminary weaving operation involved in inserting the temporary filling with its consequent de-piclring operation, both of which operations con sume a good deal of time and consequently slow up production.

I claim:

1. The method of preparing a printed warp for use in'making a printed fabric which consists in weaving a header on the end of a web of warp threads, the warp threads of said web being otherwise disconnected from each other, printing the desired pattern on the warp threads while in web form, forn'iing the printed web into a warp chain, subjec ing the warp chain to steaming and drying operations, converting the warp chain progressively back into web of warp threads which have the same relative arrangement both longitudinally and laterally as they had during the printed operation, and winding said web onto a warp beam.

2. The method of preparing a printed warp for use in making a printed fabric which consists in weaving a header on tne end of a web of warp threads, the warp threads of said web being otherwise disconnected from each other, passing the web through a printing machine by which the desired pattern is printed on the warp threads while they are in web formation, forming the printed web into a warp chain, subjecting the warp threads while in warp chain formation to various operations to fix the color of the printed pattern and to dry the warp threads, converting the warp chain back into a web of warp threads in which any portion of any thread has tie same position both longitudinally and laterally of the web rela tive to the other threads as it had when the pattern was being printed on the web, whereby the pattern will appear on the web in undistorted form, and then winding said web onto the warp beam of a loom and without distorting the pattern printed thereon.

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

ALFRED BURNS.