Lumber stacking apparatus

Details Lumber stacking apparatus Lumber stacking apparatus

B - Operations, Transporting

65

G

270/4

B65G 57/20 (2006.01) B65G 57/00 (2006.01) B65G 57/24 (2006.01) B65G 57/26 (2006.01)

Patent

CA 1135292

TITLE: LUMBER STACKING APPARATUS Abstract of the Disclosure A lumber stacking apparatus for successively plac- ing layers of boards one on another to form a vertical stack, and for automatically placing stickers between successive lay- ers of boards to vertically separate the layers within the stack. The successive layers of boards are formed along a layer support surface adjacent the stack. A forked arm assem- bly is raised to lift the formed layer from the layer support and carry the lifted layer to the stack and deposit the layer on the stack. The stickers are initially moved transverse to the movement of the fork arms to selected sticker positions. The stickers are then lifted up and over sticker supports pro- vided on the sides of the fork arms. As the fork arms are raised to lift a layer of boards from the layer support sur- face, the sticker supports simultaneously lift a layer of stickers against the bottom side of the board layer. Both layers are then moved outward over the stack, lowered, and stripped from the fork arms and sticker supports onto the stack as the fork arms are drawn back past stripping surfaces. The stripping surfaces are vertically movable in response to movement of the fork arms between positions clear of the layer to allow outward movement of the layers over the stack, and positions intersecting the paths of the layers as the fork arms are retracted.

344589

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