Patent GB-1479227-A (GB)
Title: Slider fitting and end stop applying machine
IPC: A44B19/60
Filed: 1975-07-15
Abstract: 1479227 Slider fitting and end stop applying machine YOSHIDA KOGYO KK 15 July 1975 [18 July 1974] 29585/75 Heading E2S A machine 10 for fitting a slider 50 on a pair of sliding clasp fastener stringers S and for applying an end stop 53 to the interlocked fastener stringers, comprises a machine frame 11; a reciprocally movable end stop applying punch 42 contained in the machine frame; and a combination unit 12 including an anvil 13 mounted on an arm 14 which is mounted for pivotal movement about a first axis 18, and a slider-holding jig 15 supported by a support member 16, 17 which is mounted for pivotal movement about a second axis 23 spaced apart from said first axis 18, said arm 14 and said support member 16, 17 being operatively interlocked in cross relation to each other and the arrangement being such that said jib 15 is automatically moved down with respect to said anvil while the combination unit 12 is pivoted from a slider fitting station A to an end stop applying station B where said end stop applying punch 42 registers with said anvil 13. As shown, the jig 15 comprises a body 25 having a groove 29 for receiving a pivotally-mounted spring-loaded lever 26 with a locking prong 37, a cavity 30 to accommodate the prong 37, and an aperture 31 in which a spring-loaded stopper 32 is pivotally mounted, the stopper 32 having a stepped end portion 34 which is adapted to cooperate with a slit 38 in the lever 26. The cross-link connection comprises two arms 16, 17 which are connected at their upper ends by screws 22, one to each side of the body 25 and which are pivotally mounted at their lower ends, at 23, to the frame 11, a pin 24, fixed to the supports 16, 17, extending through a slot 19 in the arm 14. In operation the combined unit of the anvil 13 and jig 15 is pivoted to the slider-fitting station A the tops of the jig 15 and the anvil 13 following respectively the arcuate paths L 2 : L 1  at the combined ends of which the top of the jig 15 is level with, or higher than, the top of the anvil 13, and the bottom edges 49 of the arms 16, 17 are releasably engaged by the pawl 47 of a spring-loaded lever 45. As the slider pull tab 52 is inserted into slit 28 it pushes the stopper 32 downwards and releases its stepped end 34 from engagement with the top edge of the slit 38, so that a spring 39 rocks the lever 26 clockwise and its locking prong 50 enters an opening in the pull tab 52 and holds the slider S while the stringers are threaded therethrough. By operating, e.g. a peddle, the pawl 47 is disengaged from the arm ends 49 and the combined unit 13, 15 is moved back to the end stop-applying station B where the anvil 13, having traversed the path L 1 , is located above the jig 15, having followed the path L 2 , and where the arm 14 actuates a limit switch 43 which actuates the punch 42 e.g. by a motor and crank mechanism, not shown, the punch 42 pressing a staple-like end stop 53 into position on the interlocked stringers S. Just before the jig 15 reaches the station B the lever 26 is engaged by a rod 40 and is rotated about the pivot 27 to cause the locking prong 37 to withdraw from the tab opening and thereby allow the slider S to be discharged from the jig 15, the spring 35 urging the stopper 32 back into its operative position where it holds the prong 37 clear of the tab-receiving slit 28.