GB688966A - Improvements in or relating to packing, wrapping and like machines - Google Patents

Abstract

688,966. Endless conveyers. MASON, J. A., ROFFEY, W. A., and MOLINS MACHINE CO., Ltd. Sept. 26, 1950. [Sept. 27, 1949] No. 24770/49. Class 78 (i). A packing, wrapping or like machine wherein articles are conveyed through the wrapperapplying and folding devices by pushers pivotally mounted on endless chains, the pushers being held in their operative position during their movement along the upper run of the conveyers by rails or guides which cease adjacent the end of this run so that as the pushers disappear beneath the bed of the machine through a narrow slot, they tip back so as to avoid striking the far side of the slot, is characterised by the provision of a device which engages the pushers at the tipping-back position to apply force to assist tipping-back, said device being adjustable to regulate said force to compensate for changes in the conveyer load and speed. The figures show the application to a machine for applying wrappers to cigarette cartons, the conveyer comprising a pair of endless chains 1 running beneath the machine bed 2 and bridged at intervals by rods 5 on which are pivotally mounted carriers 4 for a bracket 7 fashioned to form a pusher 8. These pushers are maintained in article engaging position along the upper run of the conveyer by rails 9 engaging the ends 10 of the carriers 4 at the tip-back position where the rails cease and the pusher falls back by gravity, the pusher is assisted in this movement by a part on each of its sides engaging the end of a lever 11 pivoted to the machine bed at 12 and pulled downward against a strip 16 by a spring 13, thus avoiding striking the far side of the slot 21 in the bed.