The cam lifter feed mechanism of this invention comprises an inclined endless chain Dry Screw Vacuum Pump conveyor carried by an upper framework and a lesser 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 portions getting 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 framework having a pair of other hopper forming downwardly inclined part frame associates being operable to guide lumber toward the endless chain conveyor, means installation the unlimited string conveyor distally near the lowermost end of the downwardly likely aspect body member. The hook-like foot portions each have a leading advantage downwardly willing with regards to the radii of the cam lifter at an angle coincident with the angle of inclination of the unlimited chain conveyor, the foot part providing upwardly from the leading edge right into a catch forming portion.
