Improvements in and connected with Stop Motions for Doubling Twisting or like Machines, Part of said Improvements being applicable to Spinning and Non-stop Motion Twisting Machines.

摘要

25,715. Sykes, E., and Sykes, E. Nov. 25. Stop motions; tin rollers.-In doubling, twisting, and like machines, provision is made, without the use of tension pulleys, for stopping any individual spindle on the failure of an end. The top roller 7 is carried by a rocking frame 9, mounted on a fulcrum 10. The lower portion of the frame carries an adjustable weight 11 and an extending member 9111 having a suitably-shaped end, preferably covered with leather, to act as a brake on the wharl 12. A lug 14 formed on the boss 13 normally engages with a projection on the end of a sliding bolt 16 around which is confined a spring 19. Each thread 35 passes through an eyelet 30 on a balanced detector 29 to which is loosely attached a finger 31 ; on the other side of the rollers the doubled thread 36 passes through an eyelet 33 carried by a balanced detector 32 pivoted at 321 and carrying at its other end a similar depending finger 34. Should the thread break in either place, the detector will overbalance and cause one of the fingers 32, 34 to fall between a plate 211 carried by the sliding bolt 16, and a projecting wiper 27 formed on a shaft 21 rotated from a pinion 23 on the bottom roller shaft by a train of wheels 22 held in contact therewith by a trigger or latch 25. The wiper 27' will then, in rotating, force back the plate 211, thus releasing the other end of the sliding bolt 16 from the lug 14, when the weight 11 will cause the frame 9 to swivel on the fulcrum 10, forcing back the sliding bolt and moving the plate 211 out of the way of the wiper 271. At the same time the top roller 7 will be lifted clear of the bottom roller 8, and the brake 9111 will be brought into contact with the wharl 12, thus stopping the spindle. A curved slot is formed in the bottom part 91 of the rocking frame, and the driving-cord 5, passing through, is slackened by the motion of the frame shifting it laterally on to a smaller diameter of the tin roller 2. The tin roller may be constructed in sections, each section having two diameters, and fitting into one another at the ends which are soldered together and strengthened by discs or plates between each joint; or it may be made in one or more lengths with corrugations at intervals to form the requisite different diameters. This part of the invention alone may be applied to spinning or twisting machines for stopping the spindles, the driving-cord being moved laterally from one diameter to the other in any convenient manner.