Lumber stacker apparatus

Details Lumber stacker apparatus Lumber stacker apparatus

B - Operations, Transporting

65

G

B65G 57/10 (2006.01) B65G 57/18 (2006.01)

Patent

CA 2559649

A lumber stacker apparatus for moving a course of lumber and depositing the course on a stack of lumber includes a crank mechanism, a fork assembly, an arm member, and motor means. The crank mechanism is operatively engaged to the fork assembly by the arm member. The arm member has a crank arm affixed to a crank shaft to move the fork assembly in a reciprocating stroke in response to rotation of the crank shaft. The motor means is operatively connected to the crank shaft to rotate the crank shaft at a constant angular velocity through 200° to 260°, preferably 230°, to drive the fork assembly through a slow forward stroke, to move the course of lumber, and to rotate the crank shaft through 100° to 160°, preferably 130°, to drive the fork assembly through a rapid backward stroke once the course of boards has been deposited on the stack of lumber.

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