Wood chipper with removable secondary wear block

Abstract From the Canadian patent

A wood chipper (40) for chipping wood such as, logs, into wood chips, has a chipping block (80) including one or more chipping knives (96) rotatably mounted in a housing (42). An input aperture (60) on one face of the housing (42) receives material to be chipped and, a discharge chute (58) extends tangentially from the periphery of the housing (42) to exhaust chips therefrom. Primary and secondary wear blocks (68 69) having, hardened wear surfaces, are mounted at the input aperture (60) of the housing (42) r against which incoming wood material abuts as it is fed into the chipper (40). The primary wear block (68) is mounted on a support bracket (66) and adjustable relative to the axial …