Woodworking – Special-work machine – Tree felling
Patent
1979-08-06
1983-05-24
Bray, W. D.
Woodworking
Special-work machine
Tree felling
83928, 144339, A01G 2308
Patent
active
043845991
ABSTRACT:
A substantially planar base plate has a notch therein of a size suitable for receiving tree trunks. The notch has a first and second side, each side being opposite the other. A substantially planar blade has a convex, arc-shaped cutting edge, and is pivotally attached for swinging across the top surface of the plate from the first side of the notch toward the second side so as to slice through a trunk received within the notch. A pair of underbeveled surfaces are located adjacent the notch's second side for undercutting a trunk with respect to the blade so that the trunk leans in the direction of blade swinging during slicing. An hydraulic ram connected to the blade swings it at a preselected slice rate chosen to cause, during slicing, a blade travel speed which has a predetermined relationship to the rate of trunk leaning.
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