B - Operations – Transporting – 27 – B
Patent
B - Operations, Transporting
27
B
144/55
B27B 33/20 (2006.01)
Patent
CA 1142063
Abstract Apparatus for shaping a flat surface on a work- piece includes a rotary chipper head having a plurality of radially oriented chipper knives having facing edges and chipping edges, and a circular saw blade having a diameter greater than that of the end of the chipper head closest to the workpiece. The circular saw blade is attached to the hub of the chipper head and apertures are defined in the circular saw blade to receive the ends of the knives of the chipper head, so that the chipper knives extend into the apertures in the circular saw blade. The surface formed on the workpiece is that cut by the teeth of the circular saw, and material cut from the workpiece by the saw blade is cut into chips by the chipper knives. The saw blade is thus allowed some freedom of movement relative to each chipper blade, and the facing edges of the chipper blades rotate within the kerf of the circular saw blade. The teeth of the circular saw blade extend radially far enough beyond the chipper knives so that knots in wood such as pine are cut completely by the circular saw and are not torn from the workpiece by the chipper knives.
369177
Mainland Industries Inc.
Oyen Wiggs Green & Mutala
LandOfFree
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