Loading device having multiple tongs for handling lumber and the

Details Loading device having multiple tongs for handling lumber and the Loading device having multiple tongs for handling lumber and the

1996-09-16

1998-05-19

Krizek, Janice L.

Conveyors: power-driven

Conveyor section

Unit load conveying surface means moved about an endless or...

414763, B65G 2900

Patent

active

057525943

ABSTRACT:
The loading device of the present invention is adapted for the high speed handling of lumber pieces, wherein the lumber pieces are fed side-by-side in bulk to the loading device by an inlet conveyor and are delivered by the loading device in a substantially constantly spaced relationship onto an outlet conveyor which carries the lumber pieces to another station, e.g. a classifier. The loading device comprises solely motorized mechanical components, including a number of synchronized cam-actuated tongs for picking up, grasping and transferring the lumber pieces from the inlet to the outlet conveyor. The tongs are mounted on a rotatable wheel and each displaced by a first cam system between open, closed and open positions thereof during each rotation the, wheel. A second cam system operates stoppers at this inlet side of the loading device to allow the one-by-one access of the lumber pieces to the loading device with both cam systems being synchronized such that the lumber piece accesses the loading device as the tong appears at the inlet side, wherein the tong is in its open position prior to reaching the inlet side and is adapted thereat to pick up a lumber piece and to then move to its closed position until reaching the outlet conveyor where the tong is returned to its open position thereby releasing the lumber piece onto the outlet conveyor.

REFERENCES:
patent: 3195737 (1965-07-01), Melrose
patent: 3627146 (1971-12-01), Berndt

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