| 摘要 |
930,839. Endless conveyers. WINKEL MACHINE CO. Inc. Oct. 12, 1960 [Oct. 29, 1959], No. 34953/60. Class 78 (1). In apparatus for receiving flat articles, e.g. battery grids 50, Figs. 5 and 6, in vertically depending position and horizontally stacked relationship and for discharging the articles singly and successively in horizontal position, the grids are received by a pair of intermittently driven endless chains 73, 73a on which rest ears 75, 75a of the grids, and are transferred one at a time to a pair of endless chains 137, 137a whilst remaining in vertically depending position by a reciprocating device which engages each grid in turn and pushes it over a step 114 in each of a pair of intermediate support-plates 36, 37 from which it falls on to the chains 137, 137a. The grids are then engaged by spaced pins 138, Fig. 13, on the chains 137, 137a which move continuously at a speed such that the grids are spaced by a distance greater than their height and are moved over a pair of cams 141, 142 which engage their lower edges and raise them into horizontal position for delivery to a belt 196. The transfer means comprises a pair of arms 84, 91 mounted on a shaft 76 which is oscillated via linkage 82, 83 by an eccentric 80 which also drives the chains 73, 73a step-by-step through further linkage 92 and pawl-andratchet mechanism- 86, 87, 88 acting on a pair of driving sprockets. The arms 84, 91 carry between them a rod 96, Fig. 13, which engages at laterally spaced positions forks 99 of a pair of levers 100, 100a each pivoted on a stub-shaft 98 carried by a respective plate 97, 97a. The plates 97, 97a carry stop members 113, 113a and are supported by rods 103, 103a slidable in brackets 104, Fig. 6, carried by the plates 36, 37 and prevented from rotating. Stop-pins 101, 102 and 101a, 102a respectively restrict pivotal movement of the levers 100, 100a relative to the plates 97, 97a. Each lever 100, 100a carries an arm 112, 112a on which is fastened a grid-engaging member 109, 109a such as a piece of hacksaw blade. In operation, owing to the lost-motion allowed by the pins 101, 101a, 102, 102a initial movement of arms 84, 91 from their starting positions lowers the members 109, 109a into engagement with the foremost grid of the stack which is positioned against the stop members 113, 113a after which the grid is moved in gripping relationship between the members 109, 109a and 113, 113a until the ears 75, 75a drop over the step 114 whereupon the grid is freed from these members which return to their inoperative positions, Fig. 13, during the return movement of the arms 84, 91. Leaf-springs 122, 123 act on the grids as they pass over the step 114 to ensure their transfer to the chains 137, 137a. Guide members 188, 189 position the grids as they are turned into horizontal position, these guide members being adjustable about pivots 191, 192 to enable grids of different widths to be handled. The plates 36, 37 are also adjustable for this reason by a pair of spindles 48, 49, Fig. 8, which have oppositely threaded parts engaging into in the plates 36, 37, the spindles being rotated together by a hand-wheel 57. Specification 750,569 is referred to. |
