US2024447A - Traverse motion for spinning or twisting frames - Google Patents

Description

Dec 17, 1935- vFgK. HENDRICKSON 2,02 ,447

TRAVERSE MOTION FOR SPINNING OR TWISTING FRAMES Filed Jan. 8, 1934 3 Sheets-Sheet 1 I NVEN TOR.

ATTORNEYS.

Dec. 17, 1935- F. K. HENDRICKSON TRAVERSE MOTION FOR SPINNING OR TWISTING FRAMES 3 Sheets-Sheet 2 INVENTOR.

Filed Jan. 8, 1.934

1935' F. K. HENDRICKSON 2,024,447

TRAVERSE MOTION FOR SPINNING OR TWISTING FRAMES File Jan- 1934 3 Sheets-Sheet 3 W a" w i INVENTOR.

v ATTORNEYS.

Patented Dec. 17, 1935 UNITED STATES PATENT OFFICE TRAVERSE MOTION FOR SPINNING on TWISTING FRAMES Application JanuaryS, 1934, Serial No. 705,779

5 Claims.

This invention relates to spinning or twisting frames in which parts of the drawing mechanism are regularly traversed or reciprocated during the operation of the machine.

. I have shown my invention embodied in a spinning frame in which the drawing rolls and associated parts are reciprocated relative to the twister heads through which the yarn is fed to the rolls. V r

In previous commercial traverse motions, it has .been customary to effect reciprocation. by an eccentric or crank motion. Such prior traverse motions have had a fixed locus of travel for the reciprocated parts and have also had a pronounced dwell on reversal at each end of the path of travel. Consequently, the wear on the rolls takes place within definite fixed limits and the dwell on reversal causes excessive wear at the two ends of the path of travel, eventually producing grooves in the rolls and. particularly damaging the cushioned surface of the pressor or tension rolls.

It is the general object of my invention to provide an improved traverse motion so constructed that the locus of reciprocation will be progressively shifted and that the dwellon reversal will be substantially eliminated.

To the accomplishment of this object, I provide a specially designed cam for reciprocating the moving member, and I provide additional means by which the operating locus of the cam will be progressively'changed.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings, in which Fig. 1 is a sectional end elevation of parts of a wool spinning frame embodying my improvements, the section being taken along the line II in Fig. 2;

Fig. 2 is a partial front elevation, looking in the direction of the arrow 2 in Fig. 1;

Fig. 3 is a plan view of my improved traverse motion;

Fig. 4 is a partial end elevation, looking in the direction of the arrow 4 in Fig. 3;

Fig. 5' is a sectional end elevation, taken along .the line 5-5 in Fig. 3;

Fig. 6 is a sectional side elevation, taken along the line 6-6 in Fig. 3, and a Referring to the drawings, I have shown parts of a Wool spinning frame including twister heads It (Figs. 1 and 2) continuously rotated by driving belts Ii, upper and lower drawing rolls I2 and I3, pressor rolls it, tension levers I5 and 5 tension Weights I6.

All of these parts are of commercial construction and in themselves form no part of my present invention, which relates particularly to the means for reciprocating the drawing rolls I2 and '10 I3 and preferably also the pressor rolls I4, tension levers i5 and weights I6.

The upper drawing roll I2 is supported for axial movement in fixed bearings in stands I8 (Fig. 2), and is extended to the right in Fig. 2 to 15 the head end of the machine, where suitable driving connections are provided. The lower drawing roll I3 is also slidably supported in fixed bearings in the stands I3, and is connected by a pinion 20, an intermediate gear 2| and a sec- 20 0nd pinion 22 to the power-driven drawing roll I2. Through these connections the'rolls are simultaneously rotated in the same direction and at the same speed.

Traverse heads 25 (Figs. 2 and 4) are mounted 25 on the rolls i2 and I3 and are held from axial movement relative thereto by flanges 26 and collars 21 on the rolls I2 and I3. Both rolls are, however, free to rotate in the associated head 25.

The tension levers it are mounted between collars 30 (Fig. 2) on longitudinally extending rods 35 slidable in fixed bearings and secured at one end by lock nuts 32 to the traverse heads 25.

With this construction it will be seen that re- 35 ciprocation of the heads 25 will effect axial movement of the drawing rolls I2 and I3 and also of the rods SI supporting the tension levers I5. It will also be evident that the levers I5 through links 33 (Fig. 1) axially position the pressor rolls It, so that these rolls also are reciprocated with the heads 25.

I have shown twister heads, drawing rolls and associated parts for one side only of the ma- 45 chine but it will be understood that these parts are ordinarily duplicated at the opposite side of the machine, as indicated at I2, I3 and 25 (Fig. 3).

I will now describe the improved mechanism which I have provided for reciprocating the rolls I2 and I 3, the rods SI and other associated parts.

For this purpose I have provided a cylindrical cam 46 (Fig. 3) having a cam groove 4| in its cylindrical surface. A roll 42 is mounted on a 535 bracket 43 secured to a bar 44 slidable in fixed bearings 45. The roll 42 is positioned between the side Walls of the groove 4| in the cam 46.

The bar 44 is connected by a link 46 (Fig. 3) to a lever 41 pivoted at 48 on the'machine frame, and the lever 41 is connected by segment gear teeth 49 to a similarleverBt mounted on a fixed pivot 5|. The lever 59 has a pivoted connection to a block 52 slidable in a recess 53 (Figs. 3 and 4) in the traverse head at one side of the machine. The lever 41 is similarly connected 'to the traverse head 25 at the opposite side of the machine.

From the described constructton it will be evident that endwise movement of the bar 44 through the operation of the cam will be transmitted through the levers 41 and 5D to cause simultaneous reciprocating motions of the traverse heads, drawing rolls and associated parts at both sides of the machine, and it will be further evident that these drawing rolls and associated parts will move s'tmultaneously at the same speed and in the same directions.

The cylindrical cam 48 is loosely mounted on a shaft 66 (Fig. 6) slidably supported in fixed bearings 6|. A second cylindrical cam 62 is also loosely mounted on the shaft and is provided with a cam groove 63 in its cylindrical face. The cams 40 and 62 are mounted in abutting relation on the shaft 68 and are held from axial movement on the shaft by collars 64. A cam roll 65 is rotatably mounted in a fixed bearing 66 and is positioned in the cam groove 83.

The cam 46 is provided with a gear 70 (Fig. 3) meshing with a pinion TI on a continuously rotated driven shaft 12. Consequently the cam 40 is continuously rotated, thus reciprocating the bar 44 and causing reciprocating or traverse motions of the drawing rolls l2 and I3 and associated parts. The cam groove 4| is so designed that dwell of the bar 44 and connected parts at the points of reversal of travel is substantially eliminated, this feature constituting an important improvement over the usual eccentric or crank motion operating mechanism for reasons previously stated.

So long as the cam 62 remains in fixed position, the mechanism will operate to reciprocate or traverse the drawing rolls, but the traverse will remain between the same limits or, in other words, the locus of reciprocation will be fixed. If, however, the cam 62 is moved angularly relative to the fixed roll 65, the cam 62 and the abutting cam 43 are bodily moved axially and thus the locus of reciprocation is changed.

For thus adjusting the cam 62 angularly, I provide the cam 62 with a gear 8|] (Fig. 3) meshing with a pinion 8| loose on the shaft 12 previously described but secured to a star wheel 82 also loose on the shaft I2. 7

The cam 40 is provided with a pin 83 (Fig. 5) and with a dwell portion 84. These associated parts constitute an intermittent drive for the cam 62, being of the general type known as a Geneva stop motion.

The star wheel 82 is provided with six teeth and with six intervening slots and is held from rotation by the dwell portion 84 during a major portion of each revolution of the cam 40 but is released at one point in each revolution of the cam 40 and is advanced one space by the pin 83. Consequently at every revolution of the cam 40 the cam '62 is given a partial rotation and the axially.

The pinion 8| and gear are such that each has a prime number of teeth so that by means of this gearing and the star Wheel 82 the cam 62 is given several hundred successive and distinct axial positions.

Successive positions of the locus of the reciprocating movement of thedrawing rolls and associated parts, corresponding to the different positions of the cams 62 and 40, are clearly shown in the diagrammatic view, Fig. 7.

I have thus providedsimple and reliable mechanism by which the drawing rolls and associated parts on one or both sides of a spinning or twisting frame may be regularly reciprocated or traversed, and by which the locus of the reciprocating movement may be successively shifted to distribute the wear and to prevent the formation of grooves in the yarn-engaging surfaces.

Furthermore, I have provided a cam drive in a traverse motion, so designed that dwell at the pointsof reversal is substantially eliminated.

My improved mechanism thus avoids serious objections arising in the operation of the traverse mechanisms heretofore commonly used, and the wear-of the'rolls is substantially lengthened.

Having thus described my invention and the advantages thereof, I do not wish to be limited tothe details herein disclosed, otherwise than as set forth in the claims, but what I-claim is:

1. In a spinning or twistingframe, atraverse member movable longitudinally of the machine, a cylindrical cam'having an operating groove in its cylindrical face, a connection from said cam to said member, a second cam associated with said first cam, means to intermittently advance said second cam, anda fixed element cooperating with said second cam, whereby angular movement of said second cam effects axial movement of said first cam.

2. In a spinning or twisting frame, a traverse member movable longitudinally of the machine,

a rotating cam operatively connected to said member, a normally stationary cam, said cams being mounted in fixed axial relation on a supporting shaft, means to rotate said first cam, and means to give said second cam intermittent combined axial and angular advance movements to shift the locus of operation of said first cam progressively axially.

3. In a spinning or twisting frame, a traverse member movable longitudinally of the machine, a rotating cam operatively connected to said member, a normally stationary cam, said cams being mounted in fixed axial relation on a sup porting shaft, means to rotate said first cam, and means to give said'second cam intermittent combined axial and angular advance movements to shift the locus of operation of said first cam progressively axially and. in consecutive reversed directions.

4. In a spinning or twisting frame, a traverse member movable longitudinally of the machine, a cylindrical cam operatively connected to said member, a second cylindrical cam, said cams being independently rotatable about a common axis but being mounted in fixed axial relation to each other and each having a continuous cam groove in its cylindrical surface, a fixed cam follower positioned in the groove of said second cam, means to continuously-rotate said first cam, and means :to intermittently advance said second cam -ang1.1larly relative to said fixed cam follower,

thereby shifting both cams simultaneously axill ally and correspondingly shifting the locus of reciprocation of said traverse member.

5. In a spinning or twisting frame, a traverse member movable longitudinally of the machine, a cylindrical cam having an operating groove in its cylindrical face and rotatable on a fixed axis substantially parallel to the path of reciprocation of said traverse member, a connection from said cam to said member, and means to.

shift said cam bodily axially to thereby change the locus of reciprocation of said traverse member.

FRED K. HENDRICKSON.

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