US2160010A - Spinning, twisting, and analogous machines - Google Patents

Description

SPINNING, TWIS TING, AND ANALOGOUS MACHINES G.'S. WHITTEMORE Filed July 16, 19:53

2 Sheets-sheaf 1 INVENDI'O ATT'o May- 30, 1939. a. s. WHITTE MOREQ SPINNING, TW IS'TJQNG, AND ANALOGOUS MACHINES Filed J ly 6, 1938 2 Sheets-Sheet 2 I Patented May" 30, 1939 SPINNING, TWISTING, AND ANALOGOUS moms I George Stanley Whittemore, Somersworth, N. H. I Application July 16, 1938, Serial No. 219,608

. '7 Claims. (oi. 51-15 The-application is a continuation in partof my co-pending application Serial No. 188 ,'l21

filed Februaryi, 1938.

Among the objects of the invention are:

To provide a construction which permits of increase in the rotary speed ofthe spindle for obtaining increase in production andat the same time obtaining a smooth, even yarn.

i To control the rotary .speed of the traveler, and lessen the pull of the yarn thereon when the spindle isrotating at'the higher speeds of rotation.

To provide a construction in which a certain balanced relation is obtained in the rotational speed of amount spindle and traveler dependent upon the of yarn on the spindle, and this especially for the purposeof avoiding undue strain upon the yarn.

To so encompass and control-the balloon of the yarn during the operation of the machine as to lessen the pull of the yarnupon the traveler and make it a'more even pull; and-to avoid in so far as possible the influence of centrifugal force and the roughening influence of the air upon the yarn as when the yarn is allowed unrestricted movement in the air.

To provide a construction permitting of the use of a reasonable weight traveler.

The mechanismby which these and other ob-'- jects and advantages are obtained can best be seen and understood by reference to the" drawings in which:

. Fig. 1 is a view of the machine mainly in cross verticalsectiombut partly in side elevation. Fig. 2 shows mainly in side elevation driving mechanism usedin the operation of the machine. Fig. 31s a cross section on the line 3-3 of Fig.

2; and

a Fig. 4 is a side elevation of certainparts of the machine later to be referred to. Referring to the drawings: l represents a spindle of tentative form, 2 the whorl by which the spindle is driven, and which is provided with the customary keys fits the slotted base end of a The mounting of the spindle upon the spindle.

3 into which bobbin 4 arranged together with the mechanism by which it is reciprocated and its movement otherwise controlled, for effecting proper lay of the yarn thereon,

forms no part of cordingly, is not shown.

the present invention and, ac-

5 is the traveler ring,

is a rotary hood 1. This some strong lightweight metal and though of thin shell suitable manner to the bottom end'of the hood.

The rotatable hood and ring carried by it are mounted in the following manner: Arranged above the spindle are spaced sets of overhead rails 8, 8. Passed through these rails is a shaft 9 to the bottom end of which the hood is secured in any suitable manner. The shaft is journaled to turn in ball bearings I0 set in the respective rails. Between these hearings the shaft is provided with a whorl i I by which it is turned. Endwise displacement of the shaftis prevented by nuts I! on the shaft engaging the sides of the respective bearings l0, and by engagement of the ends of the whorl H with these hearings. The shaft is a hollow shaft having a longitudinal opening [4 through its center. At ,the'top end of the shaft leading into this opening the shaft has threaded upon its tip end a hardened eye l5 which receives the yarn direct from the feed rolls (not shown) above for directing it through the opening in the shaft, thence through the. chamber of the hood, through the traveler, and out to the bobbin to be wound thereon as the spindle is roshafts 20, 2| are provided. Theseshafts, paralleling one another, are arranged in the under portion of the machine and carry pulleys 2, 2, the pulley on the shaft 20 having a belted connection 23 with the whorl 2 of the spindle, and the pulley on the shaft 2| having belted conmotion 24 with the whorl II on the shaft 9 bearing the hood. The shaft 20 is a driven shaft, driven by any suitable means (not shown). Motion is transmitted to-the shaft 2| for rotating it from off the shaft 20 through a speed changing device comprising cones 25, 26 on the ends of the. respective shafts, with belt 21 rendering around the respective cones. The arrangement of the cones is such that the shaft 2| will have its highest speed when the belt is at the right ends ofthecones as appears in the drawings,.and the arrangement is such that the belt will be shifted progressively during the operation of the me.-

china, as the yarn builds on the bobbin. lessening the relative speed of the shaft 2| to that of the shaft 20 during the yarn wind on the bobbin the following mechanism is provided.

28 represents a belt shifter in operative engagement with the belt 21. The belt shifter is borne by an angular frame 29 movable in a guide 30. It is held in a normally retracted position by means of a spring 3|, and this position is defined by engagement of the belt shifter with a plate 32 on the end of the guide 30. At such time the belt will occupy a position at the right ends of the cones, as appears in Fig. 3 of the drawings, when the shaft 2| will have its highest speed of rotation. The belt is slowly advanced along the faces of the cone pulleys during the period of the yarn wind on the bobbin, its advancement continuing throughout the period of the wind and this by movement imparted to the frame 29. For moving the frame 29 forward across the facesof the cone pulleys there is provided a. toothed bar 34 pivoted at 35 to the frame 29. The bar 34 is slidably movable within a guide rest 36 within which the bar is set. The guide rest 36 is borne by a pin 38 extending vertically from its under side with sliding extension through a block 40 affixed to a stationary frame bar 4|. Socketed within the block 40, coiled around the pin, is a spring 42, one end of which bears against the bottom of the socket, and the other end against the under side of the guide rest 36. The spring tends to exert an upward thrust upon the guide rest, the extent of upward thrust being limited by a head 44 on the end of the pin 38 drawing against the under side of the block 40. Thus the guide rest 36, and bar 34 carried by it, is maintained by the spring in a determinate raised position from whichit may be depressed upon distortive compression of the spring. In operative engagement with the toothed bar 34 is a gear 46 provided on its side with a circular line of pins 41 which engage the teeth of the bar 34, when in its normal or raised position, and will move this bar for moving the belt shifting frame 29 as the gear 46 is turned in the direction indicated by the arrow upon it. The gear 46 is turned by a'worm 48 on a shaft 50. This shaft forms a partof the builder motion (not shown) of the machine. fixed speed of rotation during the period of the build of the yarn on the bobbin. The relation of the gear 46 to the shaft 50 is such that the gear will have only one complete cycle of rotation during the build of the yarn on the bobbin, and during this period it will have moved the bar 34 forward, carrying with it the belt shifting frame 29, and moving the belt slowly across the faces of the cone pulleys. During this operation the spring 3| will become distorted. As the gear 46 approaches the end of its rotation a cam pro- Jecting from the side of the gear will engage a pin 52 projecting from the slide rest 36 where upon the slide rest will be moved down compressing the spring 42, the bar 34 following the guide rest by gravity. The downward movement of the guide rest and bar carried byit will be suflicient to move the teeth of the bar 34 out of the way of the pins 41 on the gear 46 whereupon the spring 3| will immediately draw the frame 29, to which the bar 34 is pivoted, back to its initial position, thereby shifting the belt back to its original-position at the right end of the cone pulleys, as appears in the drawings. After this operation has been completed the cam 5| through rotation of the gear 46 will have cleared the end of The shaft 50 has a continuous and For the pin 52 whereupon the machine will become stopped preparatory to the next succeeding wind upon the bobbin, when the operation will be repeated.

The general operation is as follows:

As the spindle is rotated the traveler ring is also rotated in the same direction, but at a lesser speed. When the traveler ring is fixed any high rotational speed of the spindle, or speed above a certain point, will cause such strain upon the yarn due to various forces, including the frictional resistance between the traveler and the ring as to break the yarn. By rotating the traveler ring, however, the pull on the yarn a will be materially lessened, and if, for example, the spindle be rotated at the rate of 15,000 R. P. M. and the ring at 7,500 R. P. M., then the frictional impedance of the ring on the traveler to pull on the yarn will be substantially that of a stationary ring with the spindle rotating at 7,500 R. P. M.

Though the pull on the yarn will be materially lessened by rotating the traveler ring another factor must be considered and overcome if one is to obtain a smooth and even yarn with high rotational speeds of the'spindle. This factor is the roughening effect of the air, or air friction if it may be so called, upon the ballooning yarn when the spindle is running at high speed for unless this be compensated for a rough uneven yarn will be obtained and the end sought to be attained will not be accomplished. Thedifliculty just referred to is overcome by causing high rotation of the air within which the ends of the yarn are ballooning and such rotation of air is obtained by confining it between the rotating spindle and the rotating hood, both rotating in the same direction. The rotation of the air is obtained essentially by the rotation in the same direction of the elements between which it is confined, thus relieving the roughening influence of the air upon the ballooning yarn and relieving the drag. Since both spindle and hood rotate in the same direction and since the spindle rotates much faster than the hood then the air within the hood will likely rotate faster than the hood. It may be that a partial vacuum may be created, especially at high hood and spindle speeds, which would make for smoother and more even yarn by decreasing air resistance. In any event a smooth even yarn is obtained at high spindle speed of rotation or a speed of rotation much higher than that commonly employed in ring spinning. While it has been'described that the ballooning yarn should not contact with theinterior surface of the hood it would be explained that the benefits referred to may be obtained to a greater or less degree even if the ballooning yarn should have some slight contact with the hood. It is a thing to be avoided, however, for frictional contact will increase the drag of the yarn, and tend to cause breakage.

In the rotation of the spindle the pull on the yarn is greater with the lesser amounts of yarn on the bobbin, the pull being most intense during the early stages of the wind. In the present mechanism the more intense pull upon the yarn during the early stages of the wind is caused at least in part by the lesser speed of air rotation within the hood. As the filling of the bobbin progresses the speed of the air increases and the air will have the highest speed of rotation with the full bobbin. Accordingly, in the operation of the mechanism heretofore described the relative proportioning of speed of rotation between the traveler ring and the spindle is such that the traveler ring will have a higher rotational speed, more approaching that of the spindle, when the yarn wind is first started, and gradually lessening as the wind progresses. This effect is obtained by gradual movement of the belt 21 along the cone pulleys of the respective driving shafts forming a speed changing device. At the end of the wind the belt will be returned to its initial position.

In dofling the spindle is lowered out of the way of the hood to permit of the removal of the wound bobbin. Any of the known typesof mechanism which accomplish this end may be employed.

I claim:

1. In ring spinning and analogous machines an assembly including a bobbin carrying rotary spindle, a traveler ring and traveler carried by it, a rotary hood enveloping the bobbin carried by said spindle and to the bottom end of which hood said ring is fixedly secured, means for mounting said hood, means whereby the yarn is directed into the interior of said hood and to said traveler, means for rotating said spindle, and means for rotating said hood in the direction of rotation of said spindle.

2. In ring spinning and analogous machines an assembly including a bobbin carrying rotary spindle, a traveler ring and traveler carried by it, a rotary hood enveloping the bobbin carried by said spindle and to the bottom end of which hood said ring is fixedly secured, said hood being open at the bottom and closed at the top excepting for an opening through which the yarn is directed into the interior of said hood and to said traveler, means for mounting said hood, means for rotating said spindle, and means for rotating said hood in the direction of rotation of said spindle.

3. In ring spinning and analogous machines an assembly including a bobbin carrying rotary spindle, a traveler ring and a traveler carried by it, a rotary hood carrying said traveler ring, said hood enveloping the bobbing carried by said spindle with form and arrangement whereby the ballooning yarn during the operation of the machine will not strike the interior of said hood, means for mounting said hood including an eye opening through which the yarn passes into said hood, means for rotating said spindle, and means for rotating said hood in the direction of rotation of said spindle. I

4. In ring spinning and analogous machines an assembly including a bobbin carrying spindle, a

traveler ring and traveler carrier by it, a rotary looning yarn in the operation of the machine will be contained in saidrotated air, means for mounting said hood including an opening through which the yarn is directed to pass into the interior thereof, means for rotating said spindle, and means for rotating said hood in the direction of rotation of said spindle.

5. In ring spinning and analogous machines an assembly including a bobbin carrying rotary spindle, a traveler ring and traveler carried by it, a rotary hood carrying said traveler ring, said hood enveloping the bobbin carried by said spindle with form and arrangement whereby'the ballooning yarn during the operation of the machine will not strike the interior of said hood and whereby also atmospheric air within said hood between it and the bobbin will be rotated by rotation of the bobbin and hood and the ballooning yarn in the operation of the machine will lie within said rotated air, means for mounting said hood including an opening through whichthe yarn is directed to pass into the interior thereof, means for rotating said spindle, and meansi'or rotating said hood in the direction of rotation of said spindle.

6. In ring spinning and analogous machines an assembly including a bobbin carrying rotary spindle, a traveler ring and traveler carried by it, a rotary hood enveloping the bobbin carried by said spindle and to the bottom end of which hood said ring is fixedly secured, means for mounting said hood including an opening through which the yarn passes into the interior thereof, means for rotating said spindle, means for rotating said hood and traveler ring carried by it in the direction of rotation of said spindle but with a lesser speed of rotation, and means whereby decrease in the rotary speed of said hood will be obtained during the winding of the yarn on said bobbin.

7. In ring spinning and analogous machines an assembly including a bobbin carrying spindle, a traveler ring and traveler carried by it, a rotary hood enveloping the bobbin carried by said spindle and to the bottom end of which hood said ring is fixedly secured, said hood enveloping the bobbin carried by said spindle with form and arrangement whereby atmospheric air within said hood between it and the bobbin will be rotated by rotation of the bobbin and hood and the ballooning yarn in the operation of the machine will be contained in said rotated air, means for mounting said hood including an opening through which the yarn is directed to pass into the interior thereof, means for rotating said spindle, means for rotating said hood and traveler ring carried by it in the direction of rotation of said spindle but with a lesser speed of rotation. and means whereby decrease in the rotary speed of said hood will be obtained during the winding of the yarn on said bobbin.

GEORGE STANLEY WHITI'EMORE.

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