Stump gripper

Details Stump gripper Stump gripper

1974-06-05

1976-03-30

Schran, Donald R.

Woodworking

Special-work machine

Tree felling

144 3D, 144 34R, A01G 2308

Patent

active

039467759

ABSTRACT:
A gripping arm for addition to tree harvesting apparatus having chain saw means, the arm being operable in opposition to a tree engaging anvil. The arm is angled and pivotally mounted on the underside of the tree engaging anvil and adapted to be hydraulically operated by its own controls simultaneously with the chain saw means. The arm swings below and parallel to the path of the chain saw means to engage and grip a tree to be harvested between itself and the tree engaging anvil as near to the ground as possible or convenient, thereby anchoring the tree harvesting apparatus to the stump part of the tree during and after its felling. The engaging edge of the arm and a lower engaging edge of opposition part of the tree engaging anvil are tapered downwardly to penetrate the stump part to firmly anchor the apparatus thereto. An upper engaging edge of the anvil is flat to non-penetrably engage the harvestable part of the tree.

REFERENCES:
patent: 2882941 (1959-04-01), Pope
patent: 3102562 (1963-09-01), Horncastle
patent: 3542100 (1970-11-01), Choat
patent: 3565138 (1971-02-01), Albright
patent: 3747651 (1973-07-01), Bangert et al.
patent: 3785415 (1974-01-01), Taponen

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