Patent GB-206166-A (GB)
Title: Improvements in and relating to automatic stop apparatus for spinning frames and the like
IPC: D01H13/18
Filed: 1923-10-29
Abstract: 206,166. Barksdale, G. R., (Assignee of Wilson, P. B.). Oct. 28, 1922, [Convention date]. Stop - motions; delivery, stopping ; stop-apparatus, non - automatic; thread - guides; rollers. - T h e bottom back rollers of spinning - machines a r e automatically stopped upon breakage of the sliver or yarn by means normally under the free control of the yarn but also controlled by the starting and stopping gear when the machine is first started and when it is stopped, and means is provided to raise the guides during doffing. Each back roller 17 is connected to its shaft by means of a spring 22, Fig. 3, which engages a slot in the shaft and bears against the interior of a hole in the roller, and is provided with notches 20 which are engaged by arms 124 so as to stop the roller when an end breaks. The arms 124 are carried by a lever 120 connected by means of a rod 113 with a lever 39, which is turned about a knife edge 43 by an adjustable weight 48 when a member 31 is released upon breakage of the yarn. The yarn guide 26 is secured by a setscrew in an arm 27, which is pivotally mounted on the member 31 and normally maintained in a horizontal position by its weight and a pin 32. A shaft 50 is operated so that arms 53, 54, thereon respectively turn the lever 39 about the pivot 112 of the rod 113 to raise the guides during doffing, and lock the lever 39 when the machine is stopped. To effect the latter operation the shaft 50 is operated automatically from the stop-gear of the machine and is automatically operated upon restarting to release the lever 39. The shaft 50 is operated by a handle 57, Fig. 9 to raise the guide arm 27, which is provided with a stirrup 33, Fig. 5, so that as the arm is raised the ends 34 of the stirrup encounter an angleiron 36 and thereby tilt the arm 27 as shown in dotted lines, Fig. 4. In a modification the stirrup is dispensed with and the end of the guide arm engages a fixed abutment as it is raised and is thereby tilted. The shaft 50 is provided with sheaves 60, 59, Fig. 10. the latter being provided with a weighted cord 61 for operating the shaft, and the former connected by a cord 63 and spring 75 with a movable rod 77 connected by a spring 111 with the beltshipper rod 80. When the handle 82 is operated to move the belt on to the loose pulley 13 the rod 80 moves the rod 77 to the right, thereby allowing the weighted cord 61 to turn the shaft 50 and bring the arm 54 into contact with the lever 39 and thus lock it in its inoperative position. When doffing, the shaft 50 is operated against the action of the spring 75 and is locked in position by a catch. Upon restarting, the rod 80 is moved to the left, but the rod 77 is held stationary by reason of the engagement of a catch-lever 92, which is pivoted in a bracket 90 carried by the rod 77, with the threads of a screw shaft 88. The driving-shaft is connected by a belt with the shaft 88, so that this shaft commences to rotate when the belt is on the fast pulley and gradually moves the rod 77 to the left, thereby turning the shaft 50 through the cord 63 and sheave 60 so as to raise the arm 54 and release the lever 39. A bowl 98 on the catch-lever 92 traverses a track in a plate 100 so arranged and provided with a switch that the catch-lever is engaged and disengaged with the screw to allow and effect the movements of the rod 77. To permit the operator to use both his hands during piecing the member 31 may be held down by a button, or the lever 39 may be maintained in a horizontal position by an adjustable weight.