Device for stacking pieces of board or lumber

Details Device for stacking pieces of board or lumber Device for stacking pieces of board or lumber

1975-08-25

1977-05-24

Paperner, L. J.

Conveyors: power-driven

Conveyor system for arranging or rearranging stream of items

By laterally or vertically moving successive items in...

198482, 198484, 198796, 214 6FA, B65G 5718

Patent

active

040249646

ABSTRACT:
A device for continuously stacking layers of pieces of board or lumber has a lower conveyor transporting the layers of lumber at a first substantially constant speed. An upper conveyor haing L-shaped carrying members overlies the lower conveyor with the open ends of the L-shaped members facing rearwardly. The upper conveyor and L-shaped members move at a second substantially constant speed which is slower than the speed of the lower conveyor. The timing of the two conveyors is arranged such that an L-shaped carrying member drops down slightly below the carrying plane of the lower conveyor in front of one of the layers of lumber. Prior to reahing the end of the lower conveyor the layer of lumber is conveyed above a lower leg of the L-shaped member, due to its faster speed, and the lower conveyor is then lowered so that the layer of lumber is deposited upon the L-shaped carrying member. The L-shaped carrying member with the layer of lumber then continues across the top of a stacking station which is adjusted vertically to receive each layer of lumber and has a movable stopper located on the top of the stacking station to remove each layer of lumber from the L-shaped member as it passes over the stacking station or to allow the layer to pass to a second station.

REFERENCES:
patent: 2730247 (1956-01-01), Lawson
patent: 2998133 (1961-08-01), Rambo
patent: 3116835 (1964-01-01), Brandon
patent: 3388784 (1968-06-01), Gartner
patent: 3627099 (1971-12-01), Shaffer
patent: 3696948 (1972-10-01), Murdoch et al.
patent: 3700120 (1972-10-01), Romick et al.
patent: 3913744 (1975-10-01), Turner et al.

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