| 摘要 |
A tree delimber includes a hollow tube having opposite upper and lower ends, the upper end adapted for mounted below an aerial hoist, the lower end having an anti-rotation device mounted thereto for coupling with, mating into and temporarily entangling wi th the branches of a tree as the trunk of the tree is journalled upwardly through the hollow tube as the tube is lowered onto the tree and down the trunk of the tree. The anti-rotation device inhibits rotation of the tube about a longitudinal axis of symmetry of the tube. A collar is rotatably mounted to the lower end of the tube. An annular saw blade having a lower cutting edge is mounted to the collar so as to dispose the cutting edge downwardly. The cutting edge of the saw rotates in a circle contained in a plane generally perpendicular to the axis of symmetry of the tube. A prime mover is mounted to the tube. The prime mover is remotely actuable by an operator and cooperates with the collar so that, once actuated, the prime mover urges the collar to rotate about the ax is of symmetry of the tube while the tube is held substantially stationary relative to the trunk o f a tree by the anti-rotation device engaging the branches of the tree.
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