US2260314A - Device for producing staple fiber yarns from continuous filaments - Google Patents

Description

J. E. HALIN Oct. 28, 1941.

DEVICE FOR PRODUCING STAPLE FIBER Y ARNS FROM CONTINUOUS FILAMENTS Filed April 12, 1940 IF E HAIJN INVENTOR ATTORNEYS ing and spinning.

Patented a. 2a, 1941 DEVICE FOR PRODUCING STAPLE FIBE YARNS FROM CONTINUOUS FILAMENTS ules E. Halin, Drummondville,

assignor to Celanese Corporation of corporation of Delaware Quebec, Canada, America, a

Application April 12, 1940, Serial No. 329,226

, 5 Claims.

This invention relates to the manufacture of textile yarns, and relates more particularly to a device for producing yarns having the appearance ofspun yarn, 1. e1 yarn made from staple fiber, but having a basis of continuous filaments.

In the manufacture of spun yarn from artifical fibers, the usual practice is to cut continuous artificial filaments or waste filaments into, comparatively short lengths, for example of 1 to 2 inches or more, and then subject the staple fibers produced to a series of operations appropriate to the length of the fiber, such operations being similar to those accorded to natural fibers such as cotton or wool, including opening, carding, draw- These operations represent in the production of such a relatively slow transconsiderable expense yarns, since they involve formation of the initial fibrous material to a finished yarn.

It is an object of this invention to provide an improved device for producing yarn having an appearance similar to that'of yarn made from spun fiber without the necessity for cutting continuous filaments into short lengths and spinning the fibers thus produced, which device is simple in. construction, inexpensive in cost and effective in operation.

.Another object of this inventionis the provision of means for controlling the shape of the balloon formed by the yarn drawn from the supply package whereby the degree of abrasion of the yarn may be regulated and uniform results secured under all conditions unwinding of the yarn from the yarn supply package.

A further object of this invention is to provide in an up-twist twisting machine relatively adjustable abrasive means and yarn guides.

Other objects of this invention, together with certain details of construction and combinations of parts, will appear fromthe following detailed description and the claims.

In accordance with the instant invention an up-twist twisting machine, comprising the usual twisting spindle, yarn supply package or bobbin, pig-tail guide, cork roller and takeup package or bobbin, isprovided with an abrasive element and additional guide means for cutting the filaments of the yarn by abrasive action so that at any one point only one or relatively few of the filaments obtaining during the in. the yarn are broken, or at least some of the The instant invention'will now be described in greater detail with reference to the accompanying drawing wherein Figure 1 is a front elevational view of an uptwisting device modified in accordance with the meral 4 indicates a. cross bar on the frame of an up-twisting machine in which the yarn 5, comprising a bundle of continuous filaments havin the required twist therein, is taken from a twisting bobbin 6 mounted for rotation on a spindle assembly comprising a spindle I mounted on a whorl 8 adapted to be rotated by a belt (not shown) as is well understood in the art.

In normal up-twisting practice, the yarn 5 is taken from rotating bobbin 6, passed through a pig-tail guide 9 suitably attached to the cross bar 4, then through yarn guide I I, which may be made of porcelain or of any other suitable material, attached to reciprocating traverse bar l2 by means of wires l3 and screws II, and finally wound on to a take-up bobbin l5 resting on and rotated by a cork covered roller I6 fixed to and driven by a. shaft 11.

In accordance with this invention, the uptwisting machine is modified by adding thereto simple and inexpensive means for efliciency and expeditiously converting a yarn of continuous filaments into a yarn having the appearance of spun yarn. This means comprises a circular disc l8 of emery or carborundum having aperture H of small radius in the center thereof, a pig-tal guide 2| and a ring guide 22, all disposed between thetake-up means and yarn package.

The abrasive disc is mounted in asuitablewireas by nuts 28, to the cross bar I. The holders are held against movement by set screws 29 which cooperate with a vertical groove 3| in the rod 21 to prevent rotation of said holders about the rod 21. Theholders 2|, 25 and 26 have longitudinal openings therein for receiving the twisted ends of wire holder 23, the end of pig-tail guide 2| and of ring guide 22 and by this construction the abrasive disc, pig-tail guide and ring guide may during the course of the unwinding of the yarn from a full bobbin to an empty one, conditions that would otherwise vary the shape and size of the balloon and would result in a variable abradring action.

The operation of my device is as follows Yarn supplied by bobbin 6, having a denier of 200, has

a twist of 15 to 20 turns per inch or other suitable twist inserted therein by the rotation of said bobbin 6. The yarn from the bobbin is passed through ring guide 22, pig-tail guide 2| and aperture I9, which is to M of an inch in di-' ameter, and then through pig-tail guide 9, porcelain guide II and on to take-up bobbin I5, the abrasive disc l8, the pig-tail guide 2| and the ring guide 22 being suitably adjusted relative to each otherand tothe yarn being operated upon,

so as to effect the desired degree of abrasion on the yarn. The rotation of the bobbin 6" causes the yarn to balloonpwhich ballon is controlled by means of pig-tail guide 2| and ring guide 22 so as to produce the desired contact of the yarn with the 'abrasive disc Is. This contact of the yarn with the abrasive disc I 8, .by virtue of the ballooningthereof and the control of said ballooning, and the drawing of the yarn by the takeup bobbin |5 effects the abrasion of the yarn to the degree desired.

It is to be understood that the foregoing detailed description and drawing are given merely by way of illustration and that many variations may be made therein without departing from the spirit of my invention. v Having described my invention, what I desire to secure by Letters Patent is:

'1. A paratus for the conversion of a yarn comprising a bundle of continuous filaments into a continuous product containing staple fiber comprising, in combination with a device having means for ballooning said yarn and inserting a twist therein and means-for taking-up the same at a point above the-twisting means, an abrasive member adapted to be contacted by said yarn continuously during the ballooning of said yarn,

and a plurality of guides disposed below said abrasive member for regulating'the ballooning of prising, in combination with a device having means for ballooning said yarn and inserting a twist therein and means for taking-up the same at a point above the twisting means, an abrasive 'member adapted to be contacted by said yarn continuously during the ballooning of said yarn, and a plurality of guides disposed below said abrasive member and adjustable relative thereto for regulating the ballooning of said yarn so as to control the degree of abrasion of said yarn by said abrasive member. I

3. Apparatus for the conversion of a yarn comprising a bundle of continuous filaments into a continuous product containing staple fiber comprising, in combination with an up-twisting device having means for ballooning said yarn and inserting a twist therein and means for taking-up the same at a point above said twisting means, a rod attached to said up-twisting device, an abrasive member adapted to be contacted by said yarn and a plurality of guides for regulating the ballooning of said yarn so as to control: the degree of abrasion of said yarn by said abrasive member, the construction and arrangement being such that said abrasive member and said guides are v mounted for vertical adjustment on said rod.

said yarn so as to control the degree of abrasion of said yarn by said abrasive member;

2. Apparatus for the conversion of a yarn comprising a bundle of continuous filaments into a" continuous product containing staple fiber com- (Apparatus for the conversion of a yarn comprising a bundle of continuous filaments into a continuous product containing staple fiber com- V prising, in combination with an up-twisting device having means for ballooning said yarn'and inserting a twist therein andmeans for takingup the same at a point above said twisting means, a rod attached to said up-twisting device, holders mounted for verticalmovement on said rod, an abrasive member and a plurality of guides carried-by said holders, the construction and arrangement being such that the abrasive member prising, incombination with an up-twisting dvice having means: for ballooning said yarn' and inserting a twist therein and means for takingup the same at a point above said twisting means, a rod attached to said up-twisting device, holders mounted for vertical movement on said rod, an abrasive member and a plurality of guides adjustably carried by. said holders, the construction and arrangement being such that the abrasive member is adapted to be contacted by said" yarn and the guide means are adapted to re'gulate the ballooning of said yarn so as to control the degree of abrasion of said yarn by said abrasive member.

JULES E. HALIN.

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