Tree pruning machine

Details Tree pruning machine Tree pruning machine

1985-05-10

1986-11-25

Bray, W. D.

Woodworking

Special-work machine

144343, 144356, A01G 2302, B27L 100

Patent

active

046242937

ABSTRACT:
A tree pruning machine having an elevating body detachably mounted to a standing tree and a cutting unit detachably mounted on the body and capable of rotating around the periphery of the body comprising at least three sets of wheel units mounted on the body and capable of moving radially towards and away from the tree, each including a plurality of upper and lower wheels for elevating the body vertically on the tree, an interlocking mechanism for interlocking the wheel units to each other for simultaneously moving the wheel units by the same radial distance, and a pressure equalizing mechanism having springs for biasing the wheels of the respective wheel units equally against the surface of the tree. Thus, even if the tree T varies in diameter, the pruning machine A cuts the branch t at the root while stably and reliably climbing the tree T and automatically descends the tree T when the tree pruning work is finished.

REFERENCES:
patent: 3030986 (1962-04-01), Longert
patent: 3356113 (1967-12-01), Perugia
patent: 3385332 (1968-05-01), Otterbach et al.
patent: 3451448 (1969-06-01), Michener
patent: 3454058 (1969-07-01), Fend
patent: 3457973 (1969-07-01), Meier
patent: 3545509 (1970-12-01), Baxter, Jr.
patent: 4527603 (1985-07-01), Hori

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