Abstract: A finishing blade having a radiused cutting edge for a chipper to produce a smooth finish on a surface of a log. The blades are mounted on the chipper such that a cut produced by one blade will be overlapped by a succeeding blade. The cutting edge of the finishing blade is radius ground to a slight curvature, The curvature of the cutting edge assures that the plane of cut produced by a first blade will be intersected by a succeeding blade.

Abstract: A blade holder for a chipper having a support that is configured to accommodate chip flow. The support is scoop shaped to provide a guide surface to guide the chips through the chipper while avoiding damaging impact. The chipper blades are in two parts and fitted together in end-to-end abutment and forming a bend at their juncture. One of the blade ends is grooved to receive an end edge of the other blade whereby the juncture is overlapped for added strength and to resist wood fibers being wedged into the juncture.

Abstract: An improved chipper knife system includes reversible chipper knives having formed integrally thereon nose structures comprising a leading component of a chip breaking system. A clamp plate surface follows the nose structure and, by virtue of the nose structure taking wear, has extended life and, therefore, extended value. A simple clamp arrangement includes knife registration relative to a clamp plate and a calibration keeper bar establishes a fixed position between the clamp plate the knife holder. Knives are thereby dismounted and remounted relative to the clamp without an intermediate calibration step.