US2995316A

US2995316A - Yarn tensioning device for creels and the like

Info

Publication number: US2995316A
Application number: US34509A
Authority: US
Inventors: David G Burnell
Original assignee: Lees & Sons Co James
Current assignee: James Lees and Sons Co
Priority date: 1960-06-07
Filing date: 1960-06-07
Publication date: 1961-08-08
Anticipated expiration: 1978-08-08

Description

Aug. 8, w. EMHNELL 11 3 YARN TENSIONXNG DEVICE FOR CREELS AND THE LIKE Filed Jum '7, 1950 INVENTORZ DAVID C. BURNELL 22,995,316 YARN 'lllNSlUNlNG DEVEGE FGR CREELS AND THE LIKE David (G. Burt-tell, Lexington, Vin, assignor to James ices and Sons Company, Bridgeport, that, a corporation oi Delaware Filed .l'une '7 196%, Ser. No. asses 3 Claims. (Cl. 242-447) This invention relates to yarn tensioning devices and more particularly to a tension weight for yarn creels which provides a relatively constant tension were wide range of operating conditions.

A primary object of the present invention is to provide an improved tcnsioning weight for yarn ends running from a yarn supply preferably a creel which maintains the predetermined weight on the yarn even though excessive slack occurs.

A further object of the invention is to provide a snubber for a creel tension weight which clamps the yarn end to maintain a constant tension when the weight drops to a predetermined angle.

A further object of the invention is to provide an im proved yarn tension device which permits knots and slubs to pass through the device without breaking.

l ther objects will be apparent from the specification and drawings in which:

FZGURE l is a side view of my improved yarn tensioning device installed on a creel,

FlGUitE 2 is an enlarged detail showing the device in operation,

WGURE 3 is top view of the structure of FIGURE 2,

FL'GURES t and 5 are details showing the manner in which knot or slub is permitted to pass through the tensioning device.

The conventional creel tension weight comprises a rectangular metal plate it? having a slot Til adjacent one end thereof and with a series of indentations E2 in the slot on which the weight til may be pivoted at 13. The lever arm from pivot lit to the eye 14 of the weight is proportional to the weight of tension developed in the weight. Positioning of the weight in the desired indentation l2 therefore adjusts the weight to which each of the yarns 15 may be subjected. The yarns are fed through a guide to and are supplied from yarn packages F1. 17 on the creel. The individual yarn ends may be run around a series of guides l8 which. if desired. may be constant tensioning devices employed in addition to weight itl. After passing through the eye 14 in the weight ill the yarns l5 pass over a guide 19 and thence to the loom or other textile apparatus.

Patented Aug. 8, 1961 In order to prevent undue pivoting of the tension weight ltl on pin 13 which would effectively reduce the angle of the weight with respect to the yarn, 1 provide a snubher arm 20 which is pivoted to the weight body at 21 and which also carries a pigtail yarn guide 22 at the opposite end. if the tension in yarn between guides i9 and 23 decreases so that the weight it) continues to drop, lever 20 is pivoted in counterclockwise by action of the yarn in pigtail guide 22 so that the yarn is snubbed at 25 with the result that no further downward pivoting of the guide takes place even though an excessive slack condition shown in dotted lines in FIG. 1 should occur in the yarn between the eye 14 and the package 17. In this way the effective leverage of the weight is maintained within fairly close limits so that the mass applied to the yarn between eye 14 and guide 19 is substantially constant under all operating conditions.

in the event a knot or stub 26 occurs in the yarn as shown in FIGURE 2, it can still pass through the tensioning device because when it reaches the eye M the obstruction automatically raises the weight ltl as shown by the arrow in l lGUltE 5 thus permitting the arm 20 to drop and expose a larger area of the eye 14 and thereby allow free passage of the slab or knot 26. As soon as the knot has cleared the eye M the weight pivots in a clockwise direction as shown in FEGURE 4 until the yarn is snubbed by the arm 26 and when increased tension in the loom occurs the lever pivots upward in a counterclockwise position suihciently to permit the yarn to run.

The present yarn tensioning device is highly etiicient and solves an important diiliculty in the use of pivoting creel tension weights since it maintains a constant tension on the yarns at all times between the tension devices and the loom or tuiting machine. Contrary to most other tension devices, a variation is permitted so that knots pass freely and thus undesired yarn breakage is avoided.

Having thus described my invention, 1 claim:

1. ft pivoting yarn tension device for creels and the like comprising a flat weight having an eye near one end thereof, a pivot for supporting the weight at the other end thereof. an arm pivoted to the weight and positioned to cover the eye in one pivoted position and a yarn guide secured to the arm at the end opposite the pivot.

2. Apparatus in accordance with claim I in which the yarn guide on the arm is a pigtail guide.

3. Apparatus in accordance with claim 2 in which the eye in the weight is located substantially midway between the pigtail yarn guide and the arm pivot.

eferences Cited in the tile of this patent UNXTED STATES PATENTS 745,123 Tuseth Nov. 24, 1903