Abstract: A debarker knife assembly is disclosed including a plurality of disks rotatably and drivingly carried on a shaft. The disks have cutting teeth on their circumferences and are co-rotated on the shaft to remove the bark from a log as the log advances and rotates past the rotating debarker knife assembly. The disks are interchangeable and readily assembled or disassembled for repair or replacement. The cutting teeth are provided with replaceable, reversible cutting inserts fixed to the leading faces of the teeth.

Abstract: A chipper knife assembly for a stump disintegrator is disclosed in which knife holder bodies radially span across pockets or openings formed in a rotating chipper disk. A reversible and replaceable blade insert with a plurality of selectable carbide edges is carried on the leading face of the holder body and fixed thereon by means of a threaded fastener inserted from the trailing face of the holder body through a hole formed between the trailing face and the leading face. The end of the fastener engages a threaded recess in the blade insert. The chipper knife assembly divides the chipper disk opening into a leading opening through which wood chips and other debris may pass for subsequent discharge and a leading opening which provides clearance and access to the threaded fastener for its removal and installation.

Abstract: A drum-type wood chipper having a chipper drum with knives mounted in openings with the drum wall. A chip basket is mounted within the drum behind each knife opening. The chipper knife is spaced from the drum wall at both the leading and trailing edges of the knife to define chip ingress and egress openings for the chip box. Cut chips pass into the chip box as the leading edge of the knife chips the infeed material; and the chips are carried by the box for subsequent discharge through the egress opening into a discharge chute.