US2354449A - Method of making elastic novelty yarn - Google Patents

Description

July 25, 1944. 5 w, ALDERFER 2,354,449

METHOD 01 MAKING ELASTIC NOVELTY YARN Original Filed Dec. 4, 1940 INVENTOR STERLING W. ALDERFER ATTORN EY5 Patented July 25, 1944 Sterling W. Alder-fer, Alrron, Ohio, assignor to The Firestone -Tire & Rubber Company, Akron, Ohio, a corporation of Ohio Original application December 4, 1940, .Serial No.

Divided and this application March 5, 1943, Serial No. 478,104

This invention relates to the textile art, and especially to a method ofmaking an elastic novelty yarn which is formed of separate elastic and inelastic threads, yarns, cords, or strands.

A general object of the present invention is to" provide a method of making a novel type of elastic yarn. The foregoing and other objects will be manifest from the following description of the invention, with particular reference to the accompanying drawing of which:

Figure 1 is an elevation of a slightly tensioned elastic yam made by the invention, which yarn is stranded out at one end to showthe components thereof;

Figure 2 is an elevation of the yarn of Figure 1 when it is relaxed; and

Figure 3 is a diagrammatic elevation of app ratus for forming the yarn of Figure 1.

This application is a division of my application. Serial No. 368,477, filed December 4, 1940.

Referring in detail to the drawing, an elastic yarn I is shown, which yarn includes a rubber thread it which is twisted together with a core thread l2. A yarn I3 is loosely'wrapped around the two threads II and I2 as a unit in the same direction as the twist of the threads II and I2. Note that the convolutions of the yarn it around the elastic thread are drawn into substantially abutting relation when the yarn I0 is relaxed as the yarn I3 is wound upon the threads II and I2 when the rubber thread II is tensioned. A binder thread I4 is wrapped around the unit formed of the elastic thread ll, core thread l2 and-yam l3 to retain the yarn and thread together and form a finished yarn therefrom, the binder thread being wound in the opposit directionto the yarn I3, as shown.

The binder thread H, the core thread 12, and the yarn It all may be made from cotton, wool or other suitable materials. Note that loops and/or convolutions of the yarn I! extend radially outwardly of the elastic yarn l0 betweenthe convolutions of the binder thread 14 and that the yarn l0 may be tensioned any desired amount, or else completely relaxed to bring such loops or convolutions of the yarn it into the desired relationship and vary the appearance of the yarn. In all events, the yarn l0 presents an attractive appearance and is adapted to be fabricated in .either tensioned or relaxed form. Obviously the elasticity of the yarn adapts it for new and desirable uses over ordinary novelty yarns.

The yarn Ill may be made upon apparatus including rollers 20 and 20a between which the core thread l2 and elastic thread II are drawn,

2 Claims. (01. 57-463) the elastic thread being held under tension as the yarn I0 is produced. The core thread .12 is wound upon a bobbin 2| and drawn therefrom over a guide 22 while the elastic thread II is carried by a flanged roll 23 which is supported on a roll -24 driven by a chain 25. The outer surface of the thread ll carried by the roll 23 rests directly upon the roll 24 so that,- by driving the roll 24 at a uniform speed, the elastic thread is unwrapped from the roll 23 at a uniform rate. The elastic thread H should be placed upon the "roll 23 under uniform tension to aid in removing core thread faster than th threads are drawn through the rolls 20 and 20a and at an appreciable angle to their axes to facilitate wrapping it therearound. The yarn l3 is'drawn from the bobbin 30 over a guide 35 by driven rolls 3! and 34. The composite yarn passes through a-gu'ide 28, a ring traveler 29 and then is wrapped around a bobbin 3|. The elastic thread and the core thread are twisted together and the yarn I3 is twisted therearound by rotating the bobbin through a driven pulley 32. The ring traveler 2! is slidably mounted for rotation on a vertically movable bar 88 so'that the ring traveler can move up and down with relation to the bobbin 3| to aid in distributing the yarn thereover. The yarn III is completed by passing the unit formed from the core thread l2, elastic thread ill, the bobbin 3| is substituted for the bobbin 2| and the yarn thereon is led therefrom through therolls 20 and 20a and over the guide 28 and faller bar 2I, after which the binder thread I4 is led to the yarn in a similar manner to that in which the yam II is fed. The binder thread 4 is twisted onto the unitformed by the elastic thread, core thread and yarn by leading the composite yarn through the guide 28 and ring traveler 25 to a rotating bobbin substituted for the bobbin 3|. Of course, the bobbin in this case will be driven in the opposite direction from the bobbin 3| to wind the binder thread oppositely to the yarn l2.

It will be appreciated that the'yarn l0 may be produced with the elastic thread ll under any desired tension. Usually both the core thread l2 and the binder thread l4 are wrapped around the I! or H, or, especially, the yarn 13, which color-.

ingmay vary in difierent sections of the thread or yarn colored. a

In some cases, it may be desirable to feed the unit formed of the elastic thread H, core thread i2, and yarn I: to the rolls 2! and 20a by a positive feed when completing the yarn Ill. That is, the bobbin 3| could be provided with end flanges or other means so that a substantially uniform diameter thread deposit is formed thereon and the bobbin then could be placed. on the roll 24 which would positively feed the thread to. the twisting apparatus at a constant rate. In

all events, the thread wrapped upon the bobbin II is at uniform tension which aids in removing the thread therefi om uniformly.

- While one embodiment of the invention has been completely illustrated and described herein,

it will be apparent that modification thereof may be made without departing from the scope of the invention as deilned in the appended claims.

I claim:

1. That method of forming an elastic novelty yarn comprising tensioning a rubber thread, positioning a core thread parallel and adjacent the rubber thread, feeding the aligned threads to a bobbin, positively feeding a yarn to the aligned threads faster than they are fed to the bobbin, rotating the bobbin to twist the rubber thread 10 and the core thread together and to twist the yarn loosely thcrcaround and form a unit therefrom, pulling the unit from the bobbin to tension it, leading the tensioned unit to a second bobbin, feeding a binder thread to the tensioned 15 unit, and rotating the second bobbin in the opposite direction to the first bobbin to wrap the binder thread around the unit and form a novelty elastic yarn. V-

2. A method of making an elastic novelty yarn 20 comprising feeding a rubber thread under tension, associating the tensioned'rubber thread with a substantially non-elastic core thread, twisting a yarn loosely around the tensioned rubber thread and core thread to form a unit therefrom, and

g twisting a binder thread around the unit to form a novelty elastic yarn. V

- S'I'ERLING W. ALDERFER.

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