Woodworking – Special-work machine – Tree felling
Patent
1980-02-21
1982-04-27
Bray, W. D.
Woodworking
Special-work machine
Tree felling
212238, 280 6H, 414687, A01G 2308
Patent
active
043265715
ABSTRACT:
A mobile device for handling material of various types including a frame having an endless track mounted on each side thereof for providing mobility to the frame. A source of power in the form of an internal combustion engine is mounted directly on the frame. A turntable is rotatably mounted on the frame with a boom pivotally connected at its lower end to the turntable at a point spaced from the rotating axis of the turntable for pivotal movement of the boom in a vertical plane over the turntable by means of a hydraulic ram connected at its lower end to the turntable at a point intermediate the rotating axis of the turntable and the pivotal connection of the lower end of the boom with the upper end of the ram connected to the boom. The turntable is mounted on the frame for pivotal movement of the same with the boom thereon transversely to each side of the device. Material handling apparatus for trees may be mounted on the outer end of the boom and conventional controls are provided for actuation of the boom, the endless tracks, the turntable and the material handling apparatus.
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patent: 3977547 (1976-08-01), Holopainen
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