Winged cutting knife for producing wood chips or flakes

Details Winged cutting knife for producing wood chips or flakes Winged cutting knife for producing wood chips or flakes

B - Operations, Transporting

27

L

144/85

B27L 11/02 (2006.01) B27G 13/00 (2006.01) B27L 11/00 (2006.01)

Patent

CA 1305395

"Winged Cutting Knife for Producing Wood Chips or Flakes" Abstract of the Disclosure A wood cutting knife is provided for producing wood chips or flakes. The knife includes a central cutting member, and two wing members positioned on opposite sides if the central cutting member The height of the wing members determines the depth of cut of the cutting knife, including the central cutting member Also provided is a wood processing machine for supporting such cutting knives which includes a plurality of anvil members configured to interact intimately with the cutting knives. Also provided is a breakaway feature between the cutting members and a supporting surface defined by the wood processing machine. The supporting surface is relatively smooth, and the cutting knives are mounted to the surface by weldments. If a cutting knife encounters unprocessable foreign material such as metal or rock, the knife breaks away from the supporting surface at the weldment connection, and severe damage to the supporting surface or machine is avoided. Also provided is a separating grate configured to allow wood chips or flakes which have been sufficiently reduced in size to pass from the machine. The grate may be configures to accept a plurality of stationary knives which interact with the previously-referenced cutting knives to aid in processing of the wood. The stationary knives may include a breakup ledge configured to prevent excessively long wood members from passing through the grate. 0154-1-0040

549089

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