Woodworking – Special-work machine
Patent
1990-02-14
1990-12-04
Bray, W. Donald
Woodworking
Special-work machine
144 3D, 144343, 144246C, 144246F, B27L 100
Patent
active
049746480
ABSTRACT:
An implement for lopping felled trees comprises a frame, which is adapted to be suspended from a lifting tackle and is provided with gripping members for engaging a treetrunk from below, with feeding means for imparting a longitudinal movement to the treetrunk and with lopping tools, which are distributed around the periphery of the treetrunk, and is preferably provided with a cross-cutting tool, which is operable to move transversely to the longitudinal feeding direction. In order to reduce the friction incurred during the longitudinal feed movement, at least one of the grippers constitutes a carrier for a roller, which is rotatable on an axis that is transverse to the feeding direction.
REFERENCES:
patent: 3464468 (1969-09-01), Thompson et al.
patent: 3542099 (1970-11-01), Gibson
patent: 4515192 (1985-05-01), Ericksson
Bray W. Donald
Steyr-Daimler-Puch AG
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