US2353104A - Strand twisting apparatus - Google Patents

Description

y 1944- A. E.'WINSLOW ,3 3,10

' I STRAND TWISTING' APPARATUS Filed Oct. 29, 1943 '2 Sheets-Sheet 1 IN ENTOR iI/erfi. .z'ns/ow Patented July 4, 1944 STRAND TWISTING APPARATUS Albert E. Winslow, Mystic, Conn., assignor to Atwood Machine Company, a corporation Connecticut Application October 29, 1943, Serial No. 508,131

2 Claims.

' This invention relates to a device for the twisting of strand material and more particularly to a device adapted to impart more than one turn of twist to one or more strands for each revolution of the fiyer.

In such a device the package or packages from which the strand material is supplied do not partake of the revolution of the flyer. The strands are drawn from the supply package or packages in a manner to form a loop,which is carried by a fiyer around the package or packages. Assuming the supply package to be mounted on a stationary axis, two turns of twist are imparted for each revolution of the loop about the package. The manner in which the supply package support is held stationary while mounted upon a rotating spindle with the yarn Fig. 3 is a sectional view on substantially line 33 of Fi 2.

The invention illustrated in this application forms an alternative arrangement of a part of alarger machine which is shown in my co-pending application Serial No. 517,859. The supply packages are des.'gnated I0 from which the strands of material ll lead into the hollow spindle then downwardly together and radially outwardly as looping about the supply package has been accomplished in various ways and it is the means by which this result is accomplished which is the feature of this invention.

One of the objects of this invention is to provide a simple and eflicient manner of holding the supply package support substantially stationary while being mounted upon the revolving spindle which rotates the strands about the package support.

Another object of this invention is to provide a friction drive through the fiyer from a stationary frame to the supply package support which will orovide suificient friction to prevent slip between the driving parts.

Another object of this invention is to utilize centrifugal force which is developed by a rotatior. of the flyer for maintaining a driving connection between the fiyer and the stationary part and the creel or supply package support.

Another object of this invention is to provide an arrangement so that the greater the spindle speed the greater the frictional driving connection will be between the flyer and its operating parts.

With these and other objects in view, the invention consists of certain novel features of con at l2 and thence upwardly as at I3 to loop the strands upon themselves, which loop is revolved about the axis of the spindle so that two turns of twist or lay are placed into the strands for each single turnthat the loop makes about the spindle. The upwardly extending run of the work I3 is then guided from the machine through the ring l4 and between feed rolls I5 and I6 and thence led as at I! over pulley l8 and over suitable guides l9 and to be packaged as at M, the package being operated by a surface drive 22 as diagrammatically shown in Fig. 1.

The spindle 25 (as shown in Fig. 2) is rotatably mounted by means of ball bearings 26 inlthe bolster 21 and casing 28 which is carried by a stationary part 29 consisting of the framework of the machine in which it is mounted. The

spindle is driven by a whirl 30 which is fixed to the spindle by means of the set screw 31. An arm 32 supports an annular race 33 at one side which is also supported by the bolt 34 at the other side which race is concentric with the spindle.

A creel designated generally 35 has a hub portion 36 and a plate 31 extending outwardly there: from upon which a plurality of rods 38 are carried for the support of packages ID of strand material. Rods 40 also similarly supported extend adjacent. the packages to serve as a guide about which this material is led prior to entering the hollow spindle. This creel or supply package support 35 is rotatably mounted upon the spindle by means of ball bearings the lower one of which 4| is shown in Fig. 2, which engages a shoulder 43 on the spindle. The lower portion of the creel 35 is flanged as at 44 which provides an inner annular raceway 45. concentric with the spindle.

A flyer designed generally 46 is formed with a hub portion 41 fixedly mounted upon the spindle to rotate therewith while a plate 48 engages the upper end of this hub 41 and extends outwardly therefrom to support-the reel or pulley 23 over which the strand material extends. A recess 49 is provided for the reception of the other guide In each block there is provided a bore 55 for the reception of a shaft 55 which is rotatably mounted in this bore as a bearing. At the lower end of the shaft 56 a friction wheel 51 is provided which engages the annular race 33 while at the upper end of the shaft there is a friction wheel 58 which engages the annular race 45. Thus, as the flyer 66 rotates the friction wheel 51 will be driven by its engagement with the annular race 33 to turn the shaft 56. Turning the shaft 56 will turn the friction disk 58 which will in turn drive the creel by its engagement with the annular race 45 in the opposite direction. The annular races 33 and '45 are the same in diameter and also the friction disks 56 and 58 are the same in diameter. Thus, the annular surface 65 will remain always in the same relation to the annular surface33 unless some slip occurs. The annular surface'33 is on a stationary part and accordingly although rotation of the-shaft 56 occurs the annular surface :35 will maintain the creel stationary or in its same relative position to the stationary part 32, 33 and regardless of the speed of rotation of the flyer the supporting creel will remain stationary.

The friction caused by centrifugal force throwing the several blocks 52 and their drives outwardly plus the spring 53 which assists this movement will provide a firm and sumcient driving connection so as to prevent any slipping of the parts.

Iclaim:

2,358,104 I I 1. In a strand twisting device, a spindle, a supply package support with respect to which the spindle is rotatable, an annular race carried by and fixed with relation on said support, a second annular race stationary with respect to said spindle, a flyer'carried by said spindle for re'volving in a plane between the planes of said races, a radially slidable block carried by the flyer and positioned to be revolved about said spindle and thrown outwardly by centrifugal force as rotation'occurs, a shaft rotatable in said block, a

pair of rotatable drive members rotatable with said shaft one being engageable with one race and the other being engageable with the other race to have driving relation therewith whereby centrifugal force will increase the frictional engagement between said drive members and races, and means independent of centrifugal force yieldingly urging said rotatable members into engagement with said races.

2. In a strand twisting device, a spindle, a supply package support with respect to which the spindle is rotatable, a plurality of annular races carried by and fixed with relaiton on said support, a plurality of second annular races stationary with respect to said spindle, a flyer carried by said spindle for revolving in a plane between the planes of said races, a plurality of ra- 4 diaily slidable blocks carried by the flyer in equally an'gularly spaced relation and positioned to be revolved about said spindle and thrown outwardly by centrifugal force as rotation occurs; a shaft rotatable in said block, a pair of rotatable drive members rotatable with each of said shafts one being engageable with one race and the other being engageable with the other race to have driving relation therewith whereby centrifugal force will increase the frictional engagement between said drive members and races, and a compression spring engaging each of said blocks tending to move the same radially outwardly independently of centrifugal force.

ALBERT E. WINSLOW.

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