Patent GB-315213-A (GB)
IPC: D02H3/00
Filed: 1929-04-25
Abstract: 315,213. Oettli, E. July 9, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Addition. to 277,671. Yarns, warping and beaming.-In a yarn warping machine &c. as described in the parent Specification the brake lever 14 acting on the measuring roller 24 is controlled by means of a lever 8 and link rod 6 connected to a weight 4, which can be lifted by the starting-member 3 into a middle position shown in Fig. 3 and corresponding to slow running, and be held in this position by a locking hook 19. When a thread breaks and the beam is stopped, the starting member moves from its position corresponding to fast running shown in Fig. 1, to its position corresponding to stoppage and releases the weight, which falls and operates the brake. The hook 19 is connected by a spring 42 to a double-armed setting-lever 22, 22<1> provided with stops 22<11> for guiding a push bar 20 also connected to the hook. When the weight is raised to the position shown in Fig. 1, corresponding to full speed, the arm 22 of the setting lever engages an adjustable stop 47 and the lever 22, 22<1> is rocked clockwise so that a catch plate or gripper 23 pivoted thereon and acted on by a spring 57 is snapped over a locking projection on a weight or spring loaded releasing lever 44, 44<1> pivoted at 45 to the weight. A lateral projection or stop 20<1> on the push rod 20 is thereby moved into the path of the lever 44. If the machine stops owing to thread breakage &c. the control member moves counterclockwise, and the weight falls, the projection 20<1> remaining in the path of the lever 44 so that when this is rooked towards the end of the movement of the member 3 by encountering a. stop 46, it operates the push rod 20 thus releasing the hook 19 and allowing the weight to fall. At the same time the lever 44 is freed from the gripper 23 on the lever 22 which is thereupon rocked counterclockwise by its spring 42. The weight may now be raised to the intermediate or " slow motion " position, wherein the stop 20<1> is not in the path of the member 44. The machine may then be run slowly for making adjustments. The hook 19 may be moved into a position out of the path of the weight. In this case the machine then runs without any well defined middle position. The link rod 6 has stops 5 for operating the lever 8 controlling the brake lever 14, which is pivoted at 12 and loaded by a slidable weight 13. The lever 8 is held in any position to which it has been moved by a spring 16 acting on a brake disc. At full speed running an adjusting screw 10 on the lever 8 acts on the brake lever 14 and withdraws this from the measuring roller. At slow running a spring 11 partly supports the brake lever, so that the measuring roller is rotated by the pull of the threads, but not by the pull of the movable tensioning rollers 32, 33, 37, 38 supported by the yarns. The tensioning roller 37 is normally supported by a locking member 48 on an axis 49 carrying a lever 50 connected by a spring 51 to the lever 8. When the machine stops and the lever 8 is rocked, the locking member 48 releases the roller 37. The manner in which the various rollers 32, 33, 37, 38 act to take up the slack is described. A thread lifting rod 55 and thread comb 56 are used. A bearing 54 is provided for supporting the roller 38 whilst cleaning the comb.