Disc type wood chipper knife having positioning serrations and intermediate land therebetween

Abstract From the Canadian patent

Abstract of the Disclosure A knife assembly for a disc type wood chipper for cutting wood chips from a log, for example comprises a, pair of knife holding means between which a multi-section two-edged reversible knife and an associated counter knife are releasably clamped. One surface of the knife has two spaced apart sets of indented (female) serrations with an intermediate land between the sets which engage two spaced apart sets of protruding (male) serrations and a corresponding land on one surface of the counter knife to ensure proper knife alignment. The counter knife is adjustably positionable relative to the knife holding means.