GB191406888A - Improvements in Yarn Winding Machines. - Google Patents

Abstract

6888. Wardwell, S. W. March 18. Winding-machines; stop-motions; driving-arrangements ; thread-guides ; tension arrangements.-In a winding - machine, a number of winding - units is arranged around a support, which is normally stationary, but, when the supply of yarn to one of the winding-units is interrupted, is rotated until the particular winding-unit is brought to a predetermined position opposite to an operative. The thread-guide of the winding-unit is disconnected from the actuating-cam, and the winding-spindle is disconnected from its driving-mechanism and is braked. When the winding-unit is re-started, the support is automatically caused to rotate until arrested by another inactive unic reaching the predetermined position, or, if all the units are in operation, until an arresting-device is thrown into operation to stop the rotation of the support. The yarns are drawn from supplies 6, Fig. 1, are passed through tension devices 7 and thread-guides 8, 9, and are wound in cops &c. 5 on driven spindles 4 by reciprocating thread - guides 3, all actuated by a central cam 2. The winding-units are carried by a table 17 mounted upon antifriction wheels 16 supported in a frame 10, in which is also arranged a main drive shaft 11, adapted to drive a central shaft 22. The shaft 22 carries a wheel 26 adapted to drive the wheels 21 on the winding- spindles, and a wheel 28, which drives through gears 29, 30, 31 an internal gear 32 secured to the cam 2. The position of the change gear 29 may be adjusted. The spindles 4, Fig. 4, are mounted in frames 20 pivoted to brackets 18 arranged round the table 17, and the engagement of the wheels 21, 26 is secured by a spring 27. The threadguide 3 is carried by a member 39 separably coupled to the slide 19 mounted upon the bracket 18 and reciprocated by the cam 2. The yarn as it passes from the tension device 7 travels over a counterweighted arm 44, Fig. 8, which can rock about a bar 45. When the yarn breaks, this arm falls and rocks the bar 45, oscillating a lever and forcing a knocking-off piece 42 into contact with the cam 2. The engagement of the knocking-off piece 42 and cam 2 causes the frame 20 to swing away from the cam. This stops the spindle by separating the wheels 21, 26, and causing a brake 76 to engage the wheel 21, and also stops the movement of the thread - guide 3 by separating the member 39 from the slide 19 as described in Specification 6886/14. The frame 20 carries a sliding rod 65 normally pressed downwards by a spring 71. The movement of the frame removes a latch 64 and allows the rod to move down, carrying the brake 76 with it. A handle 77 is used to turn the rod and to cause a cam 79 to lift it so as to re-engage the latch 64 and allow the spring 27 to draw the frame back into its working position. Each frame 20 carries an arm 97, Fig. 8, which, when the frame is rocked away from the cam, engages a shoulder on a ring 88 and moves the ring on its seat on the table 17, causing a shoulder 89 to engage and rock a detent 80, releasing it from a stop 81 and leaving the table free to rotate. The rotation of the table is due to the pressure of the traverse slider 19 upon the cam - groove, the resistance of the table to turning being less than the frictional resistance of the guide-traversing mechanism to actuation. The table, thus released, turns until the depressed end of the rod 65 engages an adjustable stop 99, Fig. 1, on the frame 10. To re-start the unit, the handle 77 is turned and the rod 65 is lifted from the stop 99 ; the table then turns until the next inactive unit reaches the stop 92, or, if all the units are in operation, until the detent 80 engages one of the stops 81, 82. The tension device may comprise two disks, mounted upon a pin, and revolved by a ratchet device operated from the traversing-motion.