| 摘要 |
1,150,327. Stacking timber; endless conveyers. OY TAHKA A.B. 25 May, 1967 [25 May, 1966; 30 June, 1966], No. 24442/67. Headings B8A and B8C. Planks of wood, conveyed to a stacking station, are deposited laterally from the conveyer on to a stack by first allowing one end of the plank to drop, and then the other end. The conveyers which carry the planks diverge in the direction of travel to facilitate the stacking of different lengths at separate locations. In one form described, planks 3, Fig. 4, are conveyed by divergent chain conveyers 1, 2 along supports 6, 5 respectively. Upon reaching the stacking position a wedge (9), Fig. 5 (not shown) pushes the end of the plank from the support 6, which end falls on to an inclined stack 10. A driven roller 11 assists in removing the other end from the support 5. In another embodiment Figs. 7, 8 (not shown), the support 6 is provided, at intervals, with trap doors (15) each corresponding to a stacking position for a given length. In operation a first trap door opens to deposit the shorter lengths on to a stack, the longer planks engaging a lever on support 5 to prevent opening of the door. In a modification Figs. 9-11 (not shown), as the conveyers diverge planks slide from the support (5) on to a lower support (17), parallel with support (6), and travel thereon until reaching the driven roller (11) whereupon the trap door (15) in support (6), opens, to deposit the end of the plank. The upper surface of the pile may be kept at a constant distance from the trap doors. The conveyers may continually diverge linearly or may diverge step-wise. |
