US1022979A - Tension-governor for yarn-winding apparatus. - Google Patents

Description

G. STONE. TENSION eovmmon ron YARN WINDING APPARATUS.

APPLICATION FILED JUNE 21, 1906. r 1,022,979, Patented Apr. 9, 1912.

3 SHEETS-SHEET 1.

- COLUMBIA PLANOGIIAPH (10-. WASHINGTO B. C.

G. STONE.

. TENSION GOVERNOR FOR YARN WINDING APPARATUS.

APPLICATION FILED JUNE 21, 1906.

Patented Apr. 9, 1912;

3 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH co., WASNINfl'l'nN, n. c.

I IIIIIIII, 4

. G. STONE. TENSION GOVERNOR FOR YARN WINDING APPARATUS.

APPLICATION FILED JUNE 21, 1906.

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Patented Apr. 9, 1912.

cOLUMmA PLANOGRAPH CO.'ASIHNGTON. n, c.

UNITED STATES PATENT oEEIcE.

GEORGE STONE, OF NORTH AND'OVER, MASSACHUSETTS, ASSIG-NOR TO M. T. STEVENS, if

NATHANIEL STEVENS, S. D. STEVE-NS, AND M. T. STEVENS, JR., COMPOSING THE FIRM OF M. T. STEVENS & SONS, OF NORTH ANDOVER, MASSACHUSETTS. 1

Specification of Letters Patent.

Patented Apr. 9, 1912.

, Application filed .Tune 21, 1906. Serial No. 322,710.

ratus, of which the following is a specification.

This invention relates to the winding apparatus for receiving and winding up yarn delivered from a yarn-dressing and drying apparatus, and has for its object to provide an automatic speed regulator for the wind ing reel or drum, which will reduce the speed of the latter proportionally to the increase of diameter as the yarn is wound up thereon.

The essential features of the invention are a frictional connection in the driving means for the winding reelor drum which is adapted to have normally a certain amount of slip, and an actuator for diminishing the frictional pressure and causing an increase of the slip of such means as the diameter of the coil of yarn increases. This actuator is arranged to receive a length or bight of the yarn being wound up so that the tension of the yarn acts thereon in a direction tending to reduce the pressure of the frictional connection.

The invention particularly consists in an apparatus for winding the yarn which is delivered from a machine of the character described in the patent granted to me July 22, 1902, No. 705,15

Of the accompanying drawings,-Figure 1 represents a diagrammatic elevationof a yarn-treating and drying apparatus similar to that in the patent referred to, together with, the winding mechanism and the contrivances controlled by the tension I of the yarn for varying the speed of the winding mechanism. Fig. 2-represents an elevation of the speed-controller, as seen from the right of Fig. 1. Fig. 3 represents a sectional elevation of the controller. Figs. 4, 5 and 6 represent detail views of the Fig. 7 represents a section of the friction means forming a part of the driving mechanism,

'withthe actuator for such means shown in of Fig. 7.

The same reference characters indicate the same parts in all the figures.

Referring to Fig. 1, the yarn to be treated is led in. a plurality of strands 1 from spools 2, under a guide roll or rod 3, and between rolls 4 5. The latter roll dips into a tank 6 containing a sizing or dressing composition, some of which adheres to the periphery of the roll and is carried upward into contact with the yarn, being deposited on the latter andpressed into the same by the cooperation of thetwo rollers 1 and 5. After receiving the dressing, the strands of yarn pass back and forth between two series 7 and 8 of rolls in a drying chamber, these rolls being so arranged that several stretches of the yarn are exposed at once to the action of a heated current of air. The lowermost stretch of the yarn passes over a guide roll 9, thence upward to a guide roll' 10, from which it passes around a guide roll 11 form-' ing a part of the actuatoror governor for the winding mechanism, whence the yarn finally passes through .a reed 12 to a reel or winding drum 13 upon which it is wound to make a cylindricalcoil or series ofcoils 14. The reel 13 which may conveniently be called a winding receiver, is given its rotary motion directly from a pulley 15 on a shaft 16, by means of a belt 17 This shaft is driven by a belt 18 through the pulleys 19 and 20 for which may be substituted driving wheels of any other suitable character and shafts 21 and 22 by a belt 23 passing over a pulley 24 on the main shaft 25. The

pulley 20 is fast upon the shaft 22, which latter drives shaft 21 bymeans of gears 26 upon opposite sides of the pulley. Between the disks and the faces of the pulley are disks 30 of some frictional material such as i 7 leather.

Levers 31 32 are pivoted to a yoke 33 forming part of the frame of the mechanism, and hang adjacent the hubs of the respective disks to which they are pivotally connected by pins 34 35 on the hubs extending through slots 36 37 in the levers. To the lower ends of these levers are connected rods or links 38 39 extending outward toward the side frames 40 41 of the mechanism through holes in which their outer ends extend and are supported and guided. The rods 38 and 39 are duplicates, and each carries near its outer end a sleeve 42 having a stud 43 on which is mounted a roller 44. The sleeves are removable and are clamped against shoulders on the rods by lock-nuts 45. From the foregoing it will be seen that whenever the rods 38 and 39 are moved inwardly toward each other, the levers 31 32 are swung together, and the friction disks 28 29 crowded against the opposite sides of the pulley.

The actuating means for operating the rods 38 39 or clutch actuators, as they may be called, consists of a swinging frame having side members 46 47 fixed upon a rod or rock-shaft 48 by means of set-screws 49. Each of the side members of the swinging frame has an upwardly-extending arm 50 to which is secured a cam member 51 having an inclined face 52 adapted to engage with one of the rolls 44. The guide roll 11 for the yarn previously described, is mounted in the lower ends of the members 46 47. An arm 53 is fixed to the rock-shaft 48 by means of set-screws 54 and carries on its outer end a variable weight of any suitable sort, preferably consisting of a number of weight disks 55. It is to be understood of course that any other form of weight may be employed or a spring may be substituted for the weight if desired. This weight is so arranged as to tend to move the arms 50 having the cams toward the left in Fig. 1, and toward the right in Fig. 3, the cams being so arranged that this movement forces the rods 38 39 toward each other and clamps the friction disks 28 29, which constitute clutch members, against the pulley 19. The yarn 1 is led over the guide roll 11 in such a direction that a pull produced upon it by the winding drum tends to move the swinging frame in the opposite direction and lift the weight. This of course has the effect of relieving the pressure exerted by the friction disks. I ien the yarn is slack, the weight exerts its full pressure upon the friction clutch members so that the latter act with their maximum amount of friction, which, however, is not sufiicient to cause the pulley 19 to turn at the same speed as the shaft, it being preferable to have always some slight amount of slip between them. As the yarn is wound up on the reel and the diameter thereof becomes greater, the peripheral speed of course increases for the same angular velocity of the reel, and the yarn is wound up faster than it is delivered from the spools and guide rolls 7 8. This produces an increasing tension on the yarn, which, when it becomes of sufficient amount, raises the weighted arm 53 slightly and backs off the cams 51, relieving the pressure of the friction clutch. Thus an automatic governing is effected, the tension of the yarn causing the driving pulley 19 to slip just enough to drive the reel at a slowly and constantly diminishing speed so as to keep the tension of the yarn uniform and prevent its becoming stretched or broken. A certain amount of adjustment of the friction is permitted through the nuts 56 57 threaded upon the rods 38 39 and binding between them the cross pieces 58 which are mounted upon the ends of levers 31 32. In order to prevent any uncertainty of action through springing or bending of the arms 50, each of the cam members 51 has a projecting arm 59 which carries a roller 60 resting against the adjacent side member 40 or 41 of the stationary frame. These rollers 60 guide the cams 51 in invariable paths, and prevent any deflection being caused by varying re sistance of the clutch members.

It is obvious that many minor variations of construction may be made without departing from the spirit of the invention. For example, instead of having the clutch members and actuating parts duplicated, as is here done, there may be only one of the movable friction disks, and for the other a fixed disk may be substituted. F urthermore, the functions of the shaft 21 and pulley 19 may be reversed if desired, the pulley being the constantly driven member, while the shaft may be connected up to drive the winding reel.

I claim:

1. In a yarn-winding apparatus, the combination with a receiver and means for driving the same to wind the yarn thereon, including a friction clutch, of a governor controlled by the tension of the yarn for varying the friction power of said clutch.

in correspondence with variations in such tension; said governor comprising a swinging frame having a guiding element about which the yarn is passed, yielding means tending to swing the frame oppositely to the direct-ion of pull of the yarn, a cam connected with said frame, and an actuating device engaged with said cam for operation thereby and constructed and arranged to cause increase or diminution of the frictional grip of the clutch according as it is moved in one way or the other.

2. In combination with a yarn-winding receiver, driving means therefor including a shaft, a wheel loose thereon, and a friction clutch between the wheel and shaft; an

actuator for the clutch having a cam surface, yielding means normally causing said actuator to exert pressure on the clutch;

and a guide roll carried by said actuator over which a portion of the yarn passes, adapted by an increase of tension in the yarn, to diminish the pressure exerted by said actuator.

3. In combination with a yarn-winding receiver,'driving means therefor including a shaft, a wheel loose thereon, and a fric-' tion clutch member on the shaft adapted to engage the wheel; an actuator for moving the clutch member and wheel into contact, having a projection; a movable holder having a cam surface adapted to engage said projection; yielding means tending to move the holder so that its cam will cause the maximum engaging pressure of the clutch; and a yarn guide on the holder, over which the yarn being wound is passed, so arranged that increasing tension in the yarn will move the holder in opposition to said yieldmg means.

4:. In combination with a yarn-winding receiver, driving means therefor including a shaft, a wheel loose thereon, and a friction clutch member on the shaft adapted to engage the wheel; an actuator for moving the clutch member and pulley into contact, having a projection; a pivoted holder having a plurality of arms on which are mounted respectively a cam, a weight, and a yarn guide; the cam being adapted to engage said clutch actuator projection, the weighted arm to swing the holder and cause the cam to connect the clutch, and the guide to receive a stretch of yarn being wound, in such manner that an increase of tension therein may partially overcome the pressure of the weight.

5. In combination with a yarn-winding receiver, driving means therefor including a shaft, a wheel loose thereon, and friction clutch members splined to the shaft, one on each side of the wheel; actuating devices for each of said clutch members; a projection on each said actuating device; a swinging frame including side members, a guide roll held bet-ween the side members, a cam on each of the side members arranged to engage the projections of said clutch-actuating devices, and a weighted arm; the weighted arm tending to swing the frame so as to move the clutch members into engagement with the wheel, and the guide roll being arranged to receive the yarn being led to the receiver in such manner that the tension thereof tends to overcome the efi'ect of the weight.

6. In combination with a yarn-winding receiver, a driving shaft, a driving wheel loose thereon, a friction disk splined to the shaft movable into engagement with the wheel, a lever engaged with the disk, a rod connected with the lever and having a projection, a cam engaging said projection, yielding means connected with said cam tending to move the same so as to force the disk against the wheel, and a yarn guide GEORGE STONE.

Witnesses:

HARRY R. Dow, J osnrn W. ROBINSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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