Tree cross-cutting blade

Details Tree cross-cutting blade Tree cross-cutting blade

1975-02-24

1976-10-19

Simpson, Othell M.

Woodworking

Special-work machine

Tree felling

144 34R, 144193R, A01G 2308, A47J 4902

Patent

active

039865410

ABSTRACT:
A tree cross-cutting blade has plurality of wedge-shaped ribs on the upper surface of and integral with the shear blade. The wedge-shaped ribs extend rearwardly from a bevelled cutting edge of the shear blade and distribute any splitting of the wood, due for example to a tree being frozen across the width of the tree and thus reduce the damage by splitting in a lengthwise direction along the tree. The wedge-shaped ribs may be curved, if the cutting blade cuts along an arcuate path, or straight if cutting is along a straight path. Two such tree cross-cutting blades may be used to cut a tree between them or one used to cut a tree against an anvil. If one is used to cut a tree against an anvil the shear blade may taper to increase in thickness away from the bevelled cutting edge to fell a tree in the cutting direction. The wedge-shaped ribs have pointed leading ends and are preferably triangular in cross-section.

REFERENCES:
patent: 3424211 (1969-01-01), Marine
patent: 3720249 (1973-03-01), Peltonen
patent: 3817303 (1974-06-01), Kantola et al.
patent: 3837382 (1974-09-01), Gaitten
patent: 3888287 (1975-06-01), Johnson

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