US2099766A - Spun yarn and method of preparing same - Google Patents

Description

Nov. 23, 1937.

| w. WEINBERG SPUN YARN AND METHOD OF PREPARING SAME Filed June 27, 1954 INVENTQR Wzmbers y 4 7 A OR EY W n o e Patented Nov. 23, 19.37

, 2,099,766 SPUN YARN AND METHOD'OF PREPARING SAME Leon W. Weinberg, Philadelphia, Pa., assignor to Celanese Corporation of America, a corporation of Delaware Application June 27, 1934, Serial No. 732,621

3 Claims.

The invention relates to a method and device for forming yarns from a mixture of artificial fibers and animal fibers and more especially to an improved Apperly feed on a woolen card I finisher,

An object of the invention is the economic adaptation of woolen type machinery to handle a mixture of artificial fibers and animal fibers which heretofore was not commercially practi- 10 cable. Other objects of the invention will appear from the following detailed descriptionand drawmg.

In the drawing, in which the same reference numerals refer to the same or similar elements:

thereto.

Fig. 2 is a side elevation of a part of the feed device.

Fig. 3 is a plan view of the part of the feed device shown in Fig. 2.

By this invention uniform yarns, containing 90% or more of artificial fibers to animal fibers. may be formed by the woolen method of spinning yarn. The artificial yarn contains no surface scales, as do the animal fibers, which cause an immediate clinging together upon contact, therefore rovings containing a large percent of artificial fibers when'being laid on a feed table of a 30 finisher card tend to pull out of line and also to separate. There is a difference in the springiness of yarns of artificial fibers and the yarns v of animal fibers that also lends to the difliculties 35 of obtaining a unifornrmat of fibers on the feed table. By the prior devices and modifications for laying rovings on a feed table, known as Apperly feeds it was almost impossible to obtain an even, uniform distribution of fibers high in percentage of artificial fibers, on thefeed table as the rovings lack that adhesive and clinging property of rovings containing a high percentage of animal fibers. By this invention, however, as 9.

roving is laid down upon the feed table it is 45 tucked-in into parallel engagement with the previously laid run of roving such that it remains fiat, straight and in parallel touching relation to the preceding run of roving.

According to my invention I cause a roving, as it is laid down upon a feed table, to be tucked or pushed into parallel touching engagement with the roving already upon the table. This is accomplished in one way by applying, to the transverse moving device of an Apperly feed, a follower adapted to tuck or push the roving into Fig. 1 is a perspective view of the feed end of a finisher card having the improved feed attached parallel engagement with the preceding run of roving.

This invention is applicable to the formation of yarns by the woolen method of spinning, where the yarns are all wool. However, the invention 5 is of special utility, and in fact is a necessity, when working with yarns containing mixtures of animal fibers and fibers not containing scales on their surface, for example the vegetable fibers and artificial fibers. By this invention yarns may be'formed containing as high as 90% of artificial fibers that may have smooth almost cylindrical surfaces. Any of the vegetable fibers such as cotton, cotton waste, fiax, etc. may be mixed with wool fibers and processed according to this invention or in place of vegetable fibers, the artificial fibers may be employed. The artificial fibers that lend themselves to-this invention are reconstituted cellulose formed by either the viscose or cuprammonium method, the organic esters of cellulose and the cellulose ethers which have been formed of suitable denier say 0.75 to 15 and cut or broken to staple lengths say inch to 17 inches. Examples of the organic esters of cellulose are cellulose acetate, cellulose formate, 5 cellulose propionate and cellulose butyrate while examples of cellulose ethers are methyl cellulose, ethyl cellulose and benzyl cellulose.

The animal fibers employed which may constitute from 5% to 100% of the yarn may be of any suitable type such as Marino, Marino-Lincoln or Lincoln from any locality say Australia, California, Texas etc. and the heavier fibers such as camels hair, llama and goat hair etc. The animal fibers may be of any grade such as fines to carpet stock. It is preferable however to have a relation of denier in the artificial fiber to the diameter of the average animal fibers.

Both the animal and artificial fibers used in accordance with this invention may be dyed, oiled, sized and otherwise coated or treated prior to or during the carding operation.

In the drawing there is shown a device for carrying out this invention wherein II is the base frame of a finisher card, part of which is shown at l2. The base ll contains a moving table consisting of two roughened or spiked belts l3 and I4 andintermediate belts or aprons l5 driven at a uniform and equal speed by any suitable means customarily employed on a standard Apperly feed table. This table is designed to feed a mat of rovings l6 laid down thereon doubled back and forth upon itself at an angle to the direction of travel of. the table.

The roving I! may be laid down on the table by a device as shown in the drawing which has a base l8 supported from the main frame II by means of bolts l9 and 20 that are adapted to adjust the height of the base l8 from the table. Supported on the base I8 is a rod 2| and a trackway 22 upon which a carriage 23 is adapted to run guided by the rod 2|. The carriage is reciprocated on the trackway 22 by means of the positively driven belt or chain 24 supported and driven from pulleys at either side of the table.

On the lower end of the carriage 23 is an eye 25 through which the roving I! is threaded. This eye may be preceded or followed by a pair of nip rolls for positively feeding the roving to the table, the driving means for same may be a pulley or sprocket which is journaled in the carriage and operates on the belt or chain 24.

On the carriage 23 is mounted a plate 26 by means of bolts 21 or other suitable means. The plate 26 carries bearing members 28 for receiving a shaft 29. Between the two bearing members 28 there may be placed a collar 29' equipped with a set screw 39 by which means the shaft may be raised or lowered in relation to the carriage 23. On the upper end of the shaft 29 is a grooved pulley 3| adapted for adjustment on the shaft by means of the set screw 32. On the lower end of the shaft 29 is a flat, grooved or toothed wheel 33 adapted for adjustment on the shaft 29 by means of the set screw 34.

The wheel 33 'is adapted to tuck in the roving, as it is reciprocated across the table with the carriage 23. In place of a wheel 33 there may be employed a plow or other suitable device. It is preferable however to reduce any tendency of tearing the roving to employ a positively driven wheel which has a peripheral speed equal to the speed of reciprocation such that the roving is laid in without a dragging action.

The wheel 33 may be positively driven in a direction and at an equal speed to its travel across the table by means of the grooved pulley 3|. At-

tached to each side of the base member I8 is a flexible cable 35. A spring 36 may be inserted in the cable 35 at one or both ends to relieve the jerk caused by the reversing of the direction of the carriage 23. The flexible cable 35 is looped once around the grooved pulley 3| thus positively driving same as the carriage is moved back and forth.

In operation, the roving I1 formed on a breaker card not shown and conveyed or drawn over an overhead arm 39 is brought under a guide 40 as customary in-an Apperly feed. The roving is then threaded through the eye 25 of the carriage 23 which may or may not be equipped with positive feed rolls. the table as the table moves forward and thus the roving caught on the roughened belts l3 and i4 is laid down in a doubled position on the table. Rovings containing a large percentage. of artificial The carriage is 'reciprocated across fibers will not lie straight but bulge out so that the next run of roving crosses over the bulge in such a way that in the mat [6 there will be found open spaces and places where the roving is doubled. To overcome this tendency to curl out or bulge, alternate runs of the roving are tucked under the base plate l8 by means of the follower 33. As shown in Fig. 1, this will ocur when the carriage travels from right to left. The follower wheel 33 causes the roving to more firmly contact withthe rovings already laid down and causes the roving to lie straight such that a very even and uniform mat I is produced.

It is to' be understood that the foregoing detailed description and drawing are merely given by way of illustration and many alterations may spirit of my invention. 7

Having described my invention what I desire to secure by Letters Patent is:

1. In a device of the class described, the combe made. therein without departing from the I bination with an Apperly feed table having a reciprocating carriage for laying a length of roving in a plurality of runs in serpentine form on said table, of means adapted to move with said carriage for acting on alternate runs only of the roving to tuck said runs into close contact and parallel relationship with each other, a cable adapted to rotate said means, and a spring at each end of said cable for resiliently supporting the same whereby the jar exerted by the reversing of the reciprocating carriage is avoided.

2. In a device of the class described, the combination with an Apperly feed table having a reciprocating carriage for laying a length of roving in a plurality of runs in serpentine form on said table, of a rotatable member carried by said carriage and adapted to move therewith and to act on alternate runs only of the roving to tuck said runs into close contact and parallel relationship with each other, a cable adapted to rotate said rotatable-member, and a spring at each end of said cable for resiliently supporting the same whereby the jar exerted by the reversing of the reciprocating carriage is avoided.

3. In a device of the class described, the combination with an Apperly feed table having a reciprocating carriage for laying a length of roving in a plurality of runs in serpentine form on said table, of a rotatable member carried by said carriage and adapted to move therewith and to act on alternate runs only of the roving to tuck said runs into close contact and parallel relationship with each other, means for adjusting the height of said member from the table, a cable adapted to rotate said rotatable member, and a spring at each end of said cable for resiliently supporting the same whereby the jar exerted by the reversing of the reciprocating carriage is avoided.

LEON W. wamnaaa.

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