Tree shearing apparatus

Details Tree shearing apparatus Tree shearing apparatus

1977-08-22

1979-04-03

Schran, Donald R.

Woodworking

Special-work machine

Tree felling

144 3D, A01G 2308

Patent

active

041471911

ABSTRACT:
Apparatus for felling trees by shearing them off near ground level has a frame which supports, at its upper and lower ends respectively, tree holding and shearing mechanisms. The shearing mechanism includes a housing supporting a pair of shears which cut slightly downwardly as they are closed upon a tree by hydraulic devices. The hingedly mounted shears are supported in the housing by guides which initially keep the blades from drifting from their intended line of cut and subsequently transfer the weight of a cut tree sitting on the shear blades to the housing. A clamping arm is mounted on the frame to hold a tree against movement relative thereto during and immediately after the cutting operation.

REFERENCES:
patent: B521793 (1976-02-01), Bruun
patent: 2955631 (1960-10-01), Hoadley
patent: 3074447 (1963-01-01), Bombordier
patent: 3528468 (1970-09-01), Blonsky
patent: 3674066 (1972-07-01), Shields
patent: 3731720 (1973-05-01), Moser et al.
patent: 3747651 (1973-07-01), Bangert et al.
patent: 3805860 (1974-04-01), Smith
patent: 3850469 (1974-11-01), Vit
patent: 3915211 (1975-10-01), Barwise
patent: 3927704 (1975-12-01), Wirt
patent: 3995671 (1976-12-01), Wirt
patent: 3996982 (1976-12-01), Oldenburg
patent: 4046179 (1977-09-01), Crawford

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