Wood chipper rotor head knife holder and knife assembly

Abstract From the Canadian patent

A wood chipper knife holder assembly, for a power driven rotor head has at least one opening in its wood confronting surface for the knife holder assembly which includes a mount block. A counter-knife receiving surface opposite the wood confronting surface of the rotor head is provided on the mount block for a counter-knife and a reversible knife blade with cutting surfaces along opposite transverse edges is received on the counter-knife. A clamp plate secures to clamp the knife in a projecting cutting position. The counter-knife has at least one pair of spaced apart pin openings and the knife blade has at least one pair of complemental pin openings, and pins are received in the knife blade …