Tree harvester

Details Tree harvester Tree harvester

1989-05-01

1990-04-03

Bray, W. Donald

Woodworking

Special-work machine

Tree felling

83978, 83607, 83675, 144 2Z, 144 3D, 144339, A01G 2308

Patent

active

049132032

ABSTRACT:
A tree shear is disclosed which has a frame on which is mounted a pair of blades for pivotal movement relative to one another in scissors fashion; the blades being pivoted by hydraulic jacks. Each blade pivots on a rotary shaft having an eccentric center portion, each blade being mounted on the eccentric portion so that, as the shaft rotates, it causes the blade to oscillate.

REFERENCES:
patent: 3915211 (1975-10-01), Barwise
patent: 3946776 (1976-03-01), Oldenburg
patent: 3986542 (1976-10-01), Guy et al.
patent: 4131144 (1978-12-01), Fischer
patent: 4773455 (1988-09-01), Lessard

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