US1967252A - Yarn package and mode of making same - Google Patents

Description

Jgly 24, 1934. y A. J. L. MORITZ 1,967,252

I YARN PACKAGE AND MODE OF MAKING SAME Filed Aug. s, `1952 Secondary Spoo'b INVENTOR SmolLzY* @Quo-mafie? them H 1 .Heir/zam JL/for/z/z A rToRNEYf Patented July 24, 1934 UNiTEosTArEs PATENT OFFICE 1,967,252 YARN PACKAGE AND .MODE or `MAKING. SAME Adrian J. L. Moritz, Buncombe County, N. o., as-

signor to American Enka Corporation, Enka, Y L N. C., a corporation of` Delaware v Application August 8, 193.2,` Serial` No. 628,000

6 Claims. (Cl. 18-54)` The method generally heretofore` followed of processing spcokshlll rayon filaments was to first spin on a spinning spool, then twist on a twisting bobbin and reel in skeins, in which last form it 'ij was bleached, sorted, and sent out to the consumer.

To save costs and loss in treating and mechanical manipulations, some manufacturers have developed a method of winding the yarn directfrom 510,; the twisting bobbin on to cones, which form of `package is at present being extensively used by the hosiery industry. In so doing, the conversionrof the material into the form of a skein, with its inherent expense, was eliminated.

Howeven generallythe weaving industry and some other large users could not use this kind of package on accountfof diiculties produced by the unequal contraction of the yarn in later stages of the consumers process, .And yarn ,20g so treated, was found to be particularly liable tosuch unequal contraction. i e Y The cause of' such unequal contraction, lay in the .fact `that `during the whole process in the rayon manufacturers plant, from spinning spool .251; to cone, the yarn had always been in a tightly wound state and had no opportunity to equalize the tensions whichl are brought about mainly during the drying on the spinning spool.

For this reason most of the weaving yarn,

3owhich on account of the recent development of magazine creels, was asked for more and more on cones, had first to be made into skeins and thereafter wound on cones. The making into skeins, of course presupposes that the original 355- spinning was performed on spools (followed by twisting on bobbins) or by the spinning can method, so that making into skeins was a separate operation, costing money for labor, power, etc., and also there is frequently loss or damage Qyto the yarn during this process. f Many methods have been proposed to eliminate this unnecessary and costly process, such as collapsible spinning spools and similar apparatus, which all proved very expensive and subject to corrosion on account of the spinning "acids, etc., which stay in the silk usually, until after reaching the spinning spools.

The present invention gives a perfectly practical and workable solution of this problem. No 50;,j alteration from the standard process, is made before the yarn arrives in the twisting room, thereby eliminating all troubles from corrosion and the like. The yarn may be desulphurzed and/or bleached on the spinning spool in the liajjusual manner, if desired.

In theaccompanying drawing I have shown, somewhat diagrammatically, devices used in this invention.

Fig. l shows a slightly tapering core, after the winding` proper. i

Fig. 2 shows the next stage, with the stocking pulled over the yarn on thecore.V

Fig. 3 shows the package Y of yarn transferred to a perforated secondary spool.

Instead of twisting on tothe well known twisting bobbins, the yarn is twisted on to a cylindrical or slightly conical (tapered) core of wood, `hard rubber or other suitable material, A, which ,preferably has a polished surface, shown in Fig. 1. i e

A tubular piece (preferably knit goods) which I will refer to, for brevity as a stocking, made, for example, of cotton, rayon or other suitable textile material, B,may be rst put on the core, the ends being tucked away in the hollows, C, at the end thereof, and the yarn wound thereon. After thepackage Y is finished, the stocking ends may then be drawn over the package, thereby totallyenveloping it as shown in Fig. 2.

It will be noted that the stocking is preferably somewhat more than double the length of the winding of yarn on the core, so that when the ends thereof are drawn over the surface of the yarn, as shown in Fig. 2, the ends will lap, one upon the other. This gives protection to the yarn during the following step or steps.

The package is then pushed from the core on to a secondary spool, for example that shown in Fig. 3, which has a diameter smaller than that of the core and allows for the total shrinkageof the yarn contained in said package. The said secondary spool, although oi somewhat less diameter than the core A, yet is large enough to retain the cop in a substantially annular shape. It preferably has a diameter which is slightly less than the core A.

This secondary spool S, which is preferably cylindrical in shape, may have a flange D at or near'one end, against which the package comes to rest, and this spool may also be perforated as illustrated at E*E, to afterwards allow the passage of liquids through the layers of yarn on said spool, for treating same, Yor steam or gases (e. g. warm air) for drying, or gases for chemically treating same.

The package on this secondary spool can then be immersed in, or sprayed with, water, bleaching, dyeing or nishing liquids. The liquids may also be sucked or pressed through the package by use of the perforations E-E, in

csi

known vacuum or pressure washing or treating systems. Several liquids may be used in succession, if desired.

Thereafter the package is dried and, as it has so much room on the secondary spool to shrink, all the remaining yarn shrinkage is completely taken up.

It may happen that in drying the outer layers of the package do not totally shrink on account of the still wet layers under them. Therefore it may be necessary to steam the package for some hours, after drying, thereby also eliminating this remaining shrinkage.

The result is a yarn package from which al1 shrinkage is eliminated, which .canbe usedA safely in the manufacture of any textile product, and this package can either be wound onto cones or other packages or sold directly to the consumers. y I

The secondary spool S, may be made of cheap material, for example pulp board', waterproofed if desired, so that the package as shown in Fig. 3, after the treatments referred to, can be shipped to the consumer, the stocking being left thereupon, if desired, for protection of the yarn. This spool, like the core, may taper somewhat if desired.

I claim:

1. That method of producing yarn packages which consists in Winding raw yarn on the outside of a substantially cylindrical form to form a hollow cop, transferring the wound cop to a second form of less diameter than the first form while retaining the cop in a substantially annular shape, treating the cop with desired fluid treating agents while on said second form, and drying the yarn on said second form.

2. That method of producing yarn packages which consists in covering a substantially cylindrical core with a stocking, winding the raw yarn on the stocking while the latter is on said core to form a hollow cop, transferring the cop and stocking to a second core of less diameter than the rst core while retaining the cop in a substantially annular shape, subjecting the cop to treating uid while on the second core, and drying the yarn While on said second core.

3. That method of producing yarn packages which consists in fitting a stocking of at least twice the length of the package to be produced on a substantially cylindrical core, winding raw yarn on the middle portion of the stocking While the latter is on said core, to produce a hollow cop, doubling the ends of the stocking back over the ends of the cop to cover the eXte- -rior thereof, transferring the cop and stocking bodily to a second core of smaller diameter than the first core while retaining the cop in a substantially annular shape, subjecting the yarn ,to treating fluid while on the second core, and drying the yarn while on said second core.

4. A method of the character described which includes the steps of winding and twisting yarn onto the outside of a substantially cylindrical form, thereafter transferring the wound yarn bodily to a second form of different diameter, effecting a fluid treatment while on said second form.

5. A method of the character described which includes the steps of winding and twisting yarn onto the outside of a substantially cylindrical form, thereafter transferring the wound yarn bodily to a second form of different diameter, effecting a fluid treatment and subsequently drying while on said second form.

6. A method as in claim 1, in which the rst mentioned forml has a fabric covering loosely mounted thereupon before said winding operation', and then, after the winding operation, the end portions of said fabric covering are brought over and around the cop of material upon said first mentioned form, to constitute a protective covering therefor, and thereafter the said fabric is left on the said cop during the iiuid treatments.

ADRIAN J. L. MORITZ.

Images