Woodworking – Special-work machine – Tree felling
Patent
1979-10-01
1984-01-03
Bray, W. D.
Woodworking
Special-work machine
Tree felling
83928, 144339, A01G 2308
Patent
active
RE0314811
ABSTRACT:
An elongated frame including tree clamping jaw means at one end and a shear-type cutting blade supported from the frame for movement therealong between an inactive position remote from the jaw means and an active position cooperable with the jaw means to shear a tree member clampingly engaged by the jaw means, the frame being pivotally supported from the forward end of a mobile platform for pivotal movement about a horizontal axis extending transversely of the frame and the mobile platform and vertically adjustable relative to the latter.
REFERENCES:
patent: 2612194 (1952-09-01), Ingraham
patent: 2748813 (1956-06-01), Ford
patent: 2876816 (1959-03-01), Busch
patent: 2882941 (1959-04-01), Pope
patent: 3074446 (1963-01-01), Earl
patent: 3102563 (1963-09-01), Horncastle
patent: 3183953 (1965-05-01), MacMillan et al.
patent: 3294131 (1966-12-01), Larson
Mechanizing Timber Thinning, in Traktor Journalen, NR 5, Apr. 20, 1966, pp. 372-373 (Sweden).
Will the Garp-Fist Solve the Problem of Thinning Within the Mechanized Forestry? in Skogsa/ garen NR May 5, 1966, p. 155, (Sweden).
"Garpenbergs-Fist" New Tool to Forestry, In Falv-Kuriren, Mar. 24, 1966, pp. 8, 9 & 11, (Sweden).
Science Fiction in Dala Forest, "The Fist" Like a Monster, In Dala-Demokraten, Mar. 24, 1966, (Sweden).
Forest Robot at Garpenberg, A World Novelty, "The Garp-Fist", A New Grip on Thinning, In Avesta-Thinning, Mar. 24, 1966, (Sweden).
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