US2780048A

US2780048A - hurst

Info

Publication number: US2780048A
Authority: US
Publication date: 1957-02-05
Anticipated expiration: 1974-02-05

Description

Feb. 5, 1957 T. M. HURST TEXTILE APPARATUS Filed March 4,

FIGJ. if

I I ("I l a Z/""*: 1 I I: i I i 5 Y I E I8 INVENTOR.

T. M HURST BY I 2,780,048 l atentedli'ebis, 10957 TEXTILE APPARATUS Thomas M. Hurst, Fort Mill, S. C., assignor to Celanese Corporation of America, New York,'N. Y., a corporation of Delaware Application March 4, 1953, Serial No. 340,351 6 Claims ((157-119) One form of apparatus that is widely employed to effect such winding comprises a ring frame in which a yarn is led to a yarn. package through a traveler mounted for movement around the periphery of a ring that encircles a yarn package support mounted on a rotatable spindle. Means are provided for driving the spindle at a high rate of speed so as to rotate the yarn package support mounted thereon whereby the yarn is wound onto said support.

Means are also provided for reciprocating the ringrelative to the yarn package support to distribute the windings of yarn on said support in the desired manner. The Winding, of the yarn onto the yarn package support causes the traveler to move around the periphery of the ring at a speed somewhat less than the speed of rotation of the spindle, the difference in speeds governing. the

degree of twist introduced into the yarn during the Winding operation. The traveler carries the yarn around the periphery of the ring and the centrifugal force developed by this movement of the yarn causes the said yarn to form a balloon encircling the yarn package.

The yarn being wound by. the apparatus described above may have defects comprising slubs or the like.

which increase the diameter of the yarn at the point of the slub. Such slubs reduce the quality of the yarn and are highly undesirable. To prevent such slubs from being wound into a yarn package, it has previously been proposed to equipwinding machines with separate thread cleaners or slub catchers comprising aslot of a width substantially equal to the diameter of the yarn through which slot the yarn is drawn during the winding operation. It a slub or other defect in theyarn is halted even momentarily at the slot, the yarn will break between the thread cleaner and the yarn package so that the defective yarn will be observed by the operator. The slub catchers, which are normally made of metallicor ceramic material and which have had both fixed and adjustable slots, are allsubject to 'wear and also to faulty adjustment in the case of the adjustable type. They add tension and area source of possible damage to the yarn, and their use compels the operator to thread the yarn through one or more additional paths. As a result, the slub catchers previously used have been a source of trouble.

It is an important object of this invention to provide a textile apparatus which will'be free from the foregoing and other disadvantages and which-will be especially simple in construction and eflicient in operation.

A further object of the present invention is to provide a traveler and a ring frame in which said tr'avele'r is employed which will incorporate a slub catcher.

Other objects oi this invention, together with certain details of construction and combinations of parts, will 2 be apparent from the following detailed description and claims.

According to the present invention, there is provided in a ring frame a traveler which is shaped to form a slot through whichthe yarn is passed on its way to the yarn package. The slot has a width substantially equal to the diameter of the yarn so that if a yarn having a slub or other defect is passed through said slot it will stop at least momentarily thereby causing the yarn to break. Since the travelers are normally replaced before they have had a chance to wear as a result of their travel around the ring, the problem of wear ofthe slot is substantially eliminated. In addition, the incorporation of the slot into the traveler eliminates the additional threading operation previously necessary when slub catchers were employed.

In carrying out this invention, the traveler may comprise a generally C-shaped member having a body portion, an arm projecting generallyat right angles fromthe lower end of the body portion and an arm projecting generally at right angles fromthe upper end of the body portion. Duringuse, the traveler is hooked over the ring with the body portion substantially parallelto the inner flat surface of the ring, thelower armengaging the lower surface of the ring and theupper arm engaging the upper surface of the ring. The upper arnr is shaped to form a slot through which the yarn passes on its way to the yarn package, and said slot is made of a width substantially equal to the"diameter of the yarn so as to catch any slubs or other defects in the yarn. The slot extends upwardly from the upper arm of the traveler so that it will be self-threading during The angle at which the"yarn balloon reaches the' use. yarn package normally ranges from about 30'degrees out-ward at the bottom of the traverse stroke to about 15' degrees in theopposite direction at the top of the" This angle varies to some extent with the amount of yarn on the yarn package. Since the" yarn tension is normally greatestat the bottom ofthe" traverse stroke, it is preferred to have the slot inclined outwardly from the yarnpackage at an angle of upto about 30 degrees to reduce the increase in tension-'pro-- traverse stroke.

ducedby the slot at the bottom of the traverse stroke to a minimum. However, it is also-possible to employ atraveler in which the slot is inclined inwardly toward the yarn package atan angle of up-to about 15 degrees. It is also possible-to provide-enough clearance between the traveler and the ring to allow some rocking of the traveler to permit the traveler to adjust itself to the This inclination of the slot helps to insure that the slot willbe self-threading."

best angle during the stroke.

Italso reduces *thewear on the yarn andthe possibility of substantial increases in tension through the use of the slot. a

A preferred embodiment of this invention is the' accornpanying drawing wherein I 7 Fig.1 is a side elevationalview of'the apparatus, an Fig. 2 is a detailperspective View, on an enlarged scale, of the ring and traveler.

Referring now to the drawing, the reference numeral 11 designates a rotatable spindle provided with a whorl- 12 around which is trained a belt or tape 13 the motion of which serves to rotate the spindle 11 at a high rate of speed, asis well known in the art. Mounted on the spindle 11 for rotation therewith'is a yarn package support 14. A yarn 15 from any suitable source (notshown} passes through a yarn guide 16 positioned dilBCtlYqibOVt} the yarn package support- 14 and then in a balloon 17 througha traveler, indicated generally by reference numeral 18, mountedon =a ring 19 which is supported by a ring rail 20. From the traveler 18, the yarn 15 passes to the yarn package support 14 on which shown in ,7 g I f 2,780,048 7 it is wound to form a yarn winding 21. The ring rail 20 is reciprocated by any suitable means (not shown) to distribute the yarn 15 in the yarn winding 21 in the desired manner.

' The traveler 18 comprises a generally C-shaped member having a body portion 22 which extends substantially parallel to the inner surface of the ring 19. Projecting from the lower end of the body portion 22 is an arm 23 that engages the under surface of the ring 19 and projecting from the upper end of the body portion 22 is a second arm 24 that engages the upper surface of the ring 19. The arm 24 is shaped to define a parallel walled slot 25 extending upwardly from the said arm, which slot 25 has a width substantially equal to the diameter of the yarn 15. The slot 25 is inclined along an angle substantially equal to the angle at which the yarn 15 in the balloon 17 approaches the traveler 18 at the bottom of the traverse stroke.

At the start of the winding operation, a yarn 15 is drawn through the yarn guide 16 and then through the traveler 18 following which it is thrown onto the yarn package support 14 which is caused to rotate at a high rate of speed by rotation of the spindle 11. As the yarn 15 is drawn through the traveler 18 it will automatically enter the slot 25 to assume the position shown in Fig. 2 of the drawing, being assisted in such entry by the inclination of the slot 25. The rotation of the yarn package support 14 will wind the yarn 15 onto said support and will also cause the traveler 18 to travel around the ring 19 at a rate somewhat less than the rotary rate of the spindle 11. The movement of the traveler 18 will cause the yarn 15 to form the balloon 17. The difierence in the rates of rotation of the yarn package support 14 and the traveler will impart a twist to the yarn 15 as is well known in the art. Any slubs or other defects that exist in the yarn 15 will be caught by the slot 25 thereby removing said slubs or causing the yarn to break between the traveler 18 and the yarn winding 21, whereby such defects will be observed by the operator and preventing yarn containing such defects from being shipped unknowingly to the customer. In addition, as the yarn 15 moves through the balloon. 17 to and through the traveler 18 to the yarn package support 14 a tension will be developed therein which will insure that the said yarn will be under the proper tension as it is wound into the yarn winding 21. Because of the inclination of the slot 25, the degree of tension developed in the yarn 15 will not be substantially increased above that which would exist if the slot 25 were omitted. The wear. of the slot 25 by the passage of the yarn 15 therethrough is also kept at a minimum by the inclination of said slot.

It is to be understood that the foregoing detailed description is given merely by way of illustration and that many variations may be made therein without-departing from the spirit of my invention.

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

1. A ring frame comprising a rotatable spindle for a yarn package support, means for driving said spindle, a ring encircling said spindle, and a traveler through which a yarn passes to said yarn package support mounted on said ring, said traveler being shaped to form a slot ex tending upwardly from said ring and inclined from said spindle at an angle substantially equal to the angle of the yarn balloon through which the yarn passes on its way to the yarn package support, the width of said slot being substantially equal to the diameter of the yarn for preventing the passage ofslubs in the yarn, and the position of said slot being fixed in relation to the body of said traveler.

2. A ring frame comprising a rotatable spindle for a yarn package support, means for driving said spindle, a ring encircling said spindle, and a traveler through which a yarn passes to said yarn package support mounted on said ring, said traveler being shaped to form a parallelwalled slot having a width substantially equal to the diameter of the yarn extending upwardly from the ring and inclined from said spindle at an angle substantially equal to the angle of the yarn balloon through which the yarn passes on its way to the yarn package support, the position of said slot being fixed in relation .to the body of said traveler.

3. A ring frame comprising a rotatable spindle for a yarn package support, means for driving said spindle, a ring encircling said spindle, and a traveler through which a yarn passes to said yarn package support mounted on said ring, said traveler comprising a generally C-shaped member having a body portion engaging the inner surface of the ring, an arm extending from the lower end of the body portion for engaging the under surface of the ring, and an arm extending from the upper end of the body portion for engaging the upper surface of the ring, said arms being integral with said body portion, said upper arm being shaped to form a parallel-Walled slot, having a width substantially equal to the diameter of the yarn extending upwardly from the ring and inclined from said spindle at an angle of between about 15 degrees toward said spindle and 30 degrees away from said spindle, through which the yarn passes on its way to the yarn package support.

4. A traveler adapted to engage a ring in a ring frame and shaped to form a slot extending upwardly from the ring and inclined at an angle of between about 15 degrees inwardly and 30 degrees outwardly and through which a yarn passes on its way to a yarn package sup port, the width of said slot being substantially equal to the diameter of the yarn for preventing the passage of slubs in the yarn, and the position of said slot being fixed in relation to the body of said traveler.

5. A traveler adapted to engage a ring in a ring frame comprising a C-shaped member having a body portion, an arm extending from one end of said body portion and an arm extending from the other end of said body portion, one of said arms being shaped to form a slot extending upwardly from the ring and inclined at an angle of between about 15 degrees inwardly and 30 degrees outwardly and through which a yarn passes on its way to a yarn package support, the width of said slot being substantially equal to the diameter of the yarn for preventing the passage of slubs in the yarn, and the position of said slot being fixed in relation to the body of said traveler.

6. A traveler adapted to engage a ring in a ring frame comprising a C-shaped member having a body portion, an integral arm extending generally at right angles from one end of said body portion and an integral arm extending generally at right angles from the other end of said body portion, one of said arms being shaped to form a parallel-walled slot having a width substantially equal to the diameter of a yarn extending upwardly from the ring and inclined at an angle of between about 15 degrees inwardly and 30 degrees outwardly and through which a yarn passes on its way to a yarn package support.

References Cited in the file of this patent UNITED STATES PATENTS 651,650 Campbell June 12, 1900 1,226,661 Hine May 22, 1917 1,713,938 Whiteley May 21, 1929 1,880,084 Gilligan Sept. 27, 1932 2,132,260 Fillinger Oct. 4, 1938 2,718,748 Colbe'ck et a1. Sept. 27, 1955 FOREIGN PATENTS 4,241 Great Britain of 1884 305,608 Germany Apr. 14, 1917 654,350 France Nov. 28, 1928