Woodworking – Special-work machine
Patent
1986-11-10
1987-07-21
Bray, W. D.
Woodworking
Special-work machine
37 2R, 144176, 241278R, B27L 100
Patent
active
046811451
ABSTRACT:
A tractor supported and driven mechanism for removing tree stumps which causes linear movement of a rotary cutter disk for milling away stumps from the side portions thereof is disclosed. The mechanism incorporates a frame structure having a hydraulically driven slide supported and guided by parallel structural members of the frame. The cutter disk is rotatably supported on the slide structure and is driven by the power take-off of the tractor by means of an elongated non-circular drive shaft which is received in driving engagement by a central non-circular drive opening of the cutter. The cutter disk is movable along the length of the non-circular drive shaft while maintaining driving engagement therewith. The hydraulic system of the apparatus is a closed loop system independent of the tractor hydraulics.
REFERENCES:
patent: 2887134 (1959-05-01), Bartlett
patent: 2912022 (1959-11-01), Verploeg et al.
patent: 3911979 (1975-10-01), Rousseau
patent: 4530385 (1985-07-01), York
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