Abstract: Cutterheads operating in the gap between in-feed and out-feed tables of planers, jointers and the like wood cutting apparatus are provided with a body of increased diameter and a gib having a chipbreaker pocket shape that will expose only a minimum projection of the knife before the chip must curl into the pocket thereby reducing the potential bite of a kick back such as might occur by a tipping of the wood workpiece or by a pull out of the wood grain during the feeding of the workpiece to the cutting knives. The knives of the cutterhead protrude only as much above the cutterhead body as is required not to interfere with the advance of the workpiece per revolution of each knife, the gib is positioned with its chipbreaker pocket down from the tip of the knife no further than is necessary for chip thickness, and the chipbreaker pocket has a radius just sufficient to accommodate the curled chip at the maximum depth of the cut.

Abstract: A noise reducing cutterhead for planers which includes a cylindrical cutterhead member having a plurality of circumferentially spaced axial grooves therein receiving cutter blades, the blades having an axial length less than the length of the cutter head, the blades being spaced from one another in each groove and the blades in successive grooves being staggered in axially offset relationship, the blades being held in place in the cutterhead by a wedge lock member and being adjustably received in the grooves.