US2186396A - Yarn - Google Patents

Description

Jan. 9, 1940. u. suLTAN. 2,185,396

YARN

Original Filed Apil 3, 1936 INVENTOR. 7055/299 50.4 7'/V- /ns ATTORNEY.

Patented Jan. 9, 1,940

uNi'rEpv sTATEs PATENT oFFicE Application April 3, 1936, Serial No. .72,538

Renewed March 13, 1939 4 claims.

My'l present ,invention relates to yarns and fabrics and, more particularly with yarns produced largelyrof artificial silk and artificial silk" and natural fibres, such `as cotton, which when wven 5 or otherwise incorporated into fabrics produces a fabric having novel characteristics such as appearance, feel and strength.

I'he yarns I propose to use may be made of any of the well known types `of artificial silks but I prefer to use a mixture of rayon of both the 'continuous and cut .staple types because by my novel arrangement of the yarns, as I hereinafter point out, I am enabled to produce yarns of the desired strength and uniformity without experiencing the usual disadvantages associated with the use of continuous filament artificial silk alone, or where the cut staple filament alone is used. Then again, by the addition of the natural fibres in certain of the yarns I propose to use, I also obtain novel characteristics in the resultant fabrics not,present Where artificial silk alone is used.

As will be apparent to those skilled in the art, my yarns may be made in various forms and woven, or knitted, 'into fabrics having a wide range of uses, but for purposes of illustration I sha-ll hereinafter describe a yarn and fabric especially suited to the manufacture of broadcloths.

Yarns of artificial silk as produced today, generally speaking, may .be divided into two classes I0 i. e., those in which the required number of continuous filaments, to give the desired denier, are used and, secondly, sc-called spun yarns wherein the continuous filaments are cut into predetermined lengths or staples, and then spun in the 36 same manner as heretofore practiced in the manufacture of yarns from natural libres of cotton, ,wool and the like. In each case various types of artificial silk have been used, as for example, the organic derivatives of cellulose, such as the aceir tate, formate, propionate and butyrate, or the esters of cellulose such as ethyl cellulose, methyl cellulose, or benzyl cellulose. Various artificial silk yarns have also been made from the organic derivatives of nitrocellulose depending upon the resultant fibre desired.`

l :It is with au or :he various types of artificial Silks above described my invention is concernedr although I prefer to use a mixture of certain types rather than -feature one type to the exclusion of all others. With this in mind I will now describe, in detail, a novel yarn and thread which I have, with great success, used as a warp thread. in the manufacture of broadcloths, and also a novel yarn and thread which I have used as a ller thread in the same fabrics with equal success.

(ci. six-14o) In the drawing:

Figure 1 is a plan view of a two ply yarn illustrating a form of my preferred construction of two ply yarn; and

Figure 2 is'ia similar view showing a form of my 6 three plyyarn.

In the drawing, I designate the two ply yarn as Il), the strand or ply of artificial silk of indefinite length staple as H, and the strand of combined artificial silk and natural cotton as I2. 1 In the three ply yarn I3 designates the yarn, I4 the two strands of artificial silk libres of indeliiiitex length and, lthe single strand of combined artificial silk and natural cotton.

'I'he warp thread I propose using is of two ply l5 construction. In one ply of the thread I use a percentage of artificial silk of the cut staple type and having a staple of approximately 11/ 2 inch, which is mixed and spun with a percentage of cotton libres, of approximately 1% inch staple. 20 While the percentage of artificial silk to the cotton may be varied from approximately sixty to. eighty-five percent I prefer to use approximately seventy-five percent of artificial silk with approximately twenty-five percent of cotton bres. 25 'The correct amount of said mixed fibres, to give the required denier, are spun and then twisted to approximately seventeen turns to the inch, although 'the twist may be varied from live to twenty-four turns to the inch as the occasion demands. In the second ply of the thread I use artificial silk filaments of indefinite lengths in sumcient amounts to give the required denier, and to these filaments I impart a twist of approximately five turns to the inch. These two plys $5 of yarn I next twist or cable together thereby producing a two ply thread having a cable twist of approximately fourteen turns to the in'cl'i. y While I have specified a twist iiif the second ply of live turnsto the inch and a7cable twist of fourteen 40 turns, I' may vary the number of turns as'mucli as from three to ten turns in the ply or as much as from seven to twenty-four turns in the cable depending upon the finish of the fabri'c to be produced.

' twisted approximately seventecn turns to the 55 inch. I next take two strands, or ends, of artificial silk made up as previously described in connection with the second end or strand of my warp thread and twist them together with the first strand of silk and cotton, and impart thereto a cable 'twist of approximately fourteen turns to the inch. .Here again, I may vary the number of turns in both the strand twist and the cable twist as the occasion arises for a variation in the finished fabric.

From the foregoing it will be seen that I have prepared a two ply warp thread and a three ply filler thread of novel construction which may be woven, knitted or otherwise incorporated into fabrics of various types and designs. In the manufacture of broadcloths I prefer to weave the fabric from the thus prepared yarns and threads in the usual manner.

Variations in the percentage of cotton used in certain of the strands as well as Variations in the twist in the yarns both in the doubling as well as the cabling operations, will effect not only the strength, the stretch, the lustre and feel of the fabrics produced, but the general characteristics as well, and I have found that by the use of the yarns above described I am able to produce a fabric of great strength, durability, appearance and feel. For example, it is well known that cotton goods, While stronger than artificial silk, will crease excessively as will also the continuous filament types of artificial silk, but by the use of the combination of silk and cotton in the approximate proportions given I am able to produce a fabric of the non-crushable and non- Wrinkleable type and having greater strength than the artificial silk when used alone.

While I have described a definite type of yarn, threads and fabric, I do not wish to b e restricted to such specification because I consider my invention to be broader than the single example given I claim: l. A yarn comprising two strands doubled toy gether, one of said strands being composed of approximately 75% of spun artificial silk fibres of a staple length lof approximately 1%/2 inches and approximately of natural cotton bres of a staple length of approximately 1%. inches both of said fibres being mixed and spun together and then twisted to approximately 17 tur'ns to the inch, the said other strand being composed of filaments of artificial silk of indefinite lengths twisted together with a twist of approximately 5 turns to the inch, the two strands being cabled together with a twist of approximately 14 turns to the inch.

2. A yarn comprising three strands cabled together, one of said strands being composed of ap proximately 75% of spun artificial silk fibres having a staple length of approximately 11/2 inches and approximately 25% of natural cotton bres of a staple length of approximately 11A inches, both the artificial silk and cotton .fibres being spun together and then twisted to approximately 17 turns to the inch, the second and third strands being individually composed of filaments of artificial silk of indefinite lengths twisted together with a twist of approximately 5 turns to the inch, the said three strands being finally cabled together with a twist of approximately 14 turns to the inch.

3. A yarn of articial silk comprising three strands doubled together, one of said strands being composed of spun artificial silk and cotton fibres of approximately the same staple length and in which the percentage of silk fibres exceeds the percentage of cotton fibres, the other two strands being composed of filaments of artificial silk of indefinite lengths twisted together, the said three strands being finally cabled together with a twist of from 5 to 24 turns to the inch.`

4. A yarn of artificial silk comprising two strands doubled together, one of 'said strands being composed of spun artificial silk and cotton fibres of approximately the same staple length and in which the percentage of silk fibres exceeds the percentage of cotton fibres, the other strand being composed of filaments of artificial silk of indefinite lengths twisted togethed, the

said two strands being finally cabled together with a twist of from'5 t 24 turns to the inch.

JOSEPH SULTAN.

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