US2781181A

US2781181A - Yarn tension guide

Info

Publication number: US2781181A
Application number: US412284A
Authority: US
Inventors: Jr Edward M Ayars
Original assignee: American Viscose Corp
Current assignee: Akzo Nobel UK PLC
Priority date: 1954-02-24
Filing date: 1954-02-24
Publication date: 1957-02-12
Anticipated expiration: 1974-02-12

Description

Feb. 12, 1957 M, MARS, JR 2,781,181

YARN TENSION GUIDE Filed Feb. 24, 1954 United States Patent G F YARN TENSION oumn Edward M. Ayars, In, Swarthmore, Pa., assignor to American Viscose Corporation, Philadelphia, Pa, :1 corporation of Delaware Application February 24, 1954, Serial No. 412,284

Claims. (Cl. 242-150) The present invention relates to a yarn tension guide which is used with systems for continuously withdrawing yarn from a yarn supply package.

My yarn tension guide is particularly adapted for use with yarn creeling systems wherein single yarns or ends are continuously withdrawn from a plurality of yarn supply packages to provide yarn ends which may be directly wound in a side-by-side relationship onto a large spool or beam. It will be seen, however, from the following description, that the guide may be used with any system whereby yarn is continuously withdrawn from a yarn supply package.

The yarn tension guides used in creeling systems today are found to be unsatisfactory in many respects. With these systems, the yarn is continuously withdrawn from a supply package and led by a guide between a pair of contiguous discs mounted upon a supporting spindle which discs apply pressure upon the yarn to properly tension the running yarn. A difiiculty encountered with past guides arises when the beaming operation must be suspended to rethread the guide or to replenish the yarn supply packages. After the beaming operation is stopped, the tension discs will continue to rotate for a few turns due to their momentum and since the yarn being discharged from the discs is no longer being positively drawn therefrom, it will tend to move outwardly away from its position between the discs to form a loop beyond the disc peripheries. When the beaming operation is resumed, there is a tendency for the yarn loop, as it is being drawn toward the discs, to ride up over the upper disc and overlap that portion of the disc supporting spindle which extends above the discs. When this occurs, the beaming operation must be stopped to untangle the yarn from the spindle and to rethread the yarn between the contiguous tension discs. At other times the yarn may be broken during the resumption of the beaming operation because of the yarn loop catching on some portion of the creel as it is being drawn toward the tension discs. Another unsatisfactory feature of the present yarn tension guides used with creeling systems is that two types of guides must be used. One type of guide is designed to discharge the yarn therefrom in a right hand direction while the other type is designed to discharge the yarn in a left hand direction. In standard creels the yarn supply packages are positioned in rows one above the other along both sides of the creel stand. The yarn ends must be taken olf in the same direction from both sides of the reels which requires the installationof right hand draw oif tension guides on one side of the creel stand and the installation of left hand draw off tension guides on the opposite side of the creel. In addition to the above disadvantages, the yarn tension guides now used in creeling systems are extremely difiicult to thread since extensions of the guide base prevent easy access to the thread ing areas.

It is therefore a primary object of the present invention to provide a yarn tension guide which will retain the yarn loop formed as mentioned above within the imice mediate vicinity of the tensioning discs during suspension and resumption of a beaming operation.

Another object of the invention is to provide a yarn tension guide from which the yarn may be discharged either in a right hand or a left hand direction.

Still another object of the invention is to provide a yarn tension guide which may be easily threaded by the operator.

Other objects and advantages will be apparent from a study of the description and drawings in which Figure 1 is a top view of the guide;

Figure 2 is a section taken along line 11-11 of Figure 1; and

Figure 3 is a perspective of the yarn tension guide and a yarn supply package.

Briefly, the invention provides a yarn tension guide for use in creeling systems and includes a pair of contacting tension discs mounted on a supporting spindle between which the yarn travels, means for discharging the yarn from the tension guide in either a right or left hand direction, and means for retaining the yarn Within the immediate vicinity of the tension discs during suspension and resumption of the beaming or yarn collecting operation.

Referring now to the drawings, the yarn tension guide comprises a base 1 which is drilled at one end to provide a sieeve portion 2 which may be fitted over a guide support on the creel (not shown) and fixed in position by set screw 3. A yarn threading tube 4, through which the yarn 5 is drawn from a supply package 6, is supported in the central portion of base 1. Cross bar 7 is afiixed across the base, and is bifurcated at each end to provide opposing right and left hand yarn guide elements 8 and 9 With this arrangement the angular path of travel of the yarn through the tension discs is controlled to determine the path of discharge from the tension discs in either a right hand or a left hand direction. The ring portion 1% of the base 1 adjacent bar 7 houses the tensioning assembly indicated at 11 through which the yarn is passed from either guide 8 or 9. As seen therein, a spindle 15' is supported in the center of the ring portion is by means of a ribbed supporting structure 16 welded or otherwise secured to the ring portion 10. A resilient washer 17 of fibrous or other suitable material is positioned over the spindle 15 to rest upon the supporting structure 16. A lower saucer shaped tension disc 13 is positioned in inverted manner over the spindle 15 and is supported by the washer 17. Also positioned on the spindle 15 above the lower disc 18 is a second or upper tension disc 19 which lies in contact with the lower disc 18. In view of the resiliency of the washer 17, the

discs

18 and 19 may move vertically of the spindle in response to the tension on the yarn passing through the tension assembly 11.

Weights

20, 20 are positioned over the spindle 15 and rest upon the upper disc 19 to urge the discs together. The yarn 5 is threaded between the discs either in a clockwise or counterclockwise manner depending upon which guide element, 8 or 9, carries the yarn.

An important feature of the invention lies in the yarn rethreading traps or retainer comprising

angle pins

21 and 21 affixed to the ring portion 10 and which extend vertically therefrom with the upper portions of the pins extending inwardly toward the

discs

18 and 19. As pointed out hereinabove, when the beaming operation is suspended for any reason the

discs

18 and 19 continue to rotate for a time because of their momentum thereby drawing the yarn from the supply package. Since the yarn 5 is no longer being drawn away from the discs by the take-up spool, a loop is formed in the yarn within the area of the discs. The pin 21 or pin 21, depending upon whether the right or left hand guide is used, serves arsaisi 3 to retain the excess yarn or loop within the immediate vicinity of the

discs

18 and 19 to permit easy rethreading of,the discs when the beaming operation is resumed. These pins or traps prevent the yarn 5 from becoming entangled about the upper exposed portion of spindle 15 or from being broken by catching on a part of the creei support as the yarn 5 is drawn toward the discs 13 or 19 during resumption of the winding operation. As, seen from the drawings, the

pins

21 and 21 are positioned directly opposite to one another to provide retaining means for the yarn 5 regardless of whether the direction of yarn discharge is to the right or left of the guide; The

pins

21 and 21 may be disposed at other locations around the ring portion 10, and a plurality of pins may be installed on opposite portions of the ring section 10 so that the yarn loop may be retained at a number of stations to further insure the retention or trapping of the yarn 5 within the immediate zone of

discs

18 and 19. It is preferable to. have the yarn retaining pin, pin 2i for instance, in the form of an angle hook as illustrated in the drawings. The upper portion of the pin 21 is bent with respect to the shank port-ion to form an angle therewith less than a right angle. As the yarn loop is formed during suspension of the beaming operation, the yarn 5 becomes lodged within the notch formed by the bend of the pin 21 and prevents the yarn 5 from passing outwardly or upwardly beyond the pin 21. Preferably the free end of the pin 21 terminates at a point immediately adjacent the periphery of the upper disc 19 leaving just enough clearance therebetween to initially thread the discs 13 and 19.. The pins, 21 and 21 may, of course, take other shapes such asthat of a right angle as long as there is provided a snare or catching portion to trap the yarn 5 as it. loops outwardly from the discs 13 and 19.

Figure 2 illustrates the manner in which the guide may be used for either a right hand or left hand yarn discharge. For a left hand yarn discharge the yarn 5 travels through the threading tube 4, through guide 9, r

and in a counterclockwise manner between

tension discs

18 and 19. For a right hand yarn discharge the yarn 5 travels through tube 4, through guide 8, and in a clockwise nanner between the

tension discs

18 and 19.

{As seen from the above description, the yarn tension guide has many advantages over the tension guides now being used. With the present tension guide, the creeling operation may be stopped and resumedat will without rethreading the guides since the tension guide eliminates yarn breakage or entanglement. The guide may be instalied on either the right or left side of the creel stand which eliminates the use of separate right and left hand guides. in addition to the above advantages, the tension guides may be easily threaded whether they be positioned in the top or lower rows of the creel.

While preferred embodiments of the invention have been shown and described, it is to be understood that changes and variations may be made without departing from the spirit and scope of the invention as defined in the appended claims.

=1 claim:

1. A yarn tension device comprising a base, means at one end of the base for mounting the base upon a supporting structure, a yarn threading tube extending vertically through the base, yarn tension discs supported one above the other in contacting relationship at the.

other end of the base which discs are rotated by the action of the. yarn passing therebetween, bent pin yarn rethreading traps for the discs which traps are secured to the base and located around the discs for retaining in a rethreading position immediately adjacent the discs a yarn loop. formed by the momentum of the tension discs after termination of the yarn winding operation, and a dual yarn guiding member afiixed to the base between the yarn threading tube and the tension discs for controlling the angular path of travel of the yarn through the tension discs to determine the path of discharge of the yarn from the tension discs in either a right or left hand direction.

2. A yarntension guide comprising a base, means at one end oi the base for mounting the base upon a supporting structure, a yarn threading tube extending vertically through the base, yarn guiding means atfixed to the base, yarn tension discs supported one above the other in contacting relationship at the other end of the base which discs are rotated by the action of the yarn passing therebetween, and at least one yarn rethreading retainer for the discs which retainers are secured to the base and located adjacent the tension discs for retaining in a rethreading position immediately adjacent the discs a yarn loop formed by the momentum of the tension discs after termination of the yarn winding operation to facilitate rethreading of the yarn between the discs upon resumption of the winding operation.

3. A yarn tension guide comprising a base, means at one end of the base for mounting. the base upon a supporting structure, a. yarn threading tube extending vertically through the base, yarn guiding means afiixed to the base, yarn tension discs supported one above the other in contacting relationship at the other end of the base which discs are rotated by the action of the yarn passing therebetween, and a pair of opposed bent pin yarn rethreading traps for the discs which are secured to the base and located adjacent the tension discs to conline in rethreading position within the immediate vicinity of the yarn tension discs a yarn loop formed by the momentum of the tension discs after termination of the winding operation. 7

4. A yarn tension guide comprising a base, means at one end of the base for mounting the base upon a supporting structure, a yarn threading tube extending vertically through the base, upper and lower yarn tension discs contiguously mounted on the spindle which discs are rotated by the action of the yarn passing therethrough, a dual yarn guiding member afiixed to the base between the yarn threading tube and the tension discs for controlling the angular path of travel of the yarn through the tension discs to determine the path of yarn discharge from the discs in either a right or left hand direction, and bent pin yarn rethread-ing traps for the discs which are supported by the base and located adjacent the tension discs for retaining in rethreading position within the immediate vicinity of the discs a yarn loop formed by the momentum of the tension discs after termination of the winding operation to facilitate rethreading of the yarn between the discs upon resumption of the winding operation. i

5. A yarn winding tension guide according to claim 4 wherein the yarn discharge directional control guiding member comprises opposite end portions of a bar afiixed to and extending transversely of the base.

References Cited in the file of this patent UNIT ED STATES PATENTS 1,450,559 Medeiros Apr. 3, 1923 1,790,553 Peterson Jan. 27, 1931 1,856,188 Holmes May 3, 1932 2,055,820 Gram Sept. 29, 1936' 2,185,890 Friday Jan. 2, 1940 2,373,066 Theiler Apr. 3; 1945 2,615,654 Suggs Oct. 28. 1952