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The cam lifter feed mechanism of this invention comprises an inclined endless chain conveyor carried by an upper framework and a lower framework including a multiplicity of lug-like lumber engaging means mounted at intervals on the endless chains of the conveyor, a driven shaft journaled for roatation in the upper framework including sprockets operatively engaged with endless chains of the conveyor, a plurality of cam lifters mounted on the shaft at opposite terminal sides of the endless chain conveyor including outwardly projecting hook-like foot Water Ring Vacuum Pumps portions being operable to engage the lowermost terminal edge of lumber carried on the conveyor by the lug-like engaging means and to carry the lumber over the shaft to a spot of discharge, a downwardly inclined discharge feed guide means mounted on the upper framework between cam lifters. The low platform having a pair of other hopper developing downwardly inclined part frame members being operable to guide lumber toward the limitless string conveyor, means mounting the endless chain conveyor distally near the lowermost end of the downwardly inclined aspect frame member. The hook-like foot servings each have got a leading edge downwardly inclined with regards to the radii of the cam lifter at an angle coincident with the angle of inclination of the unlimited string conveyor, the foot part providing upwardly from the industry leading right into a connect developing portion.