Woodworking – Bench dog
Patent
1974-08-09
1976-01-13
Yost, Frank T.
Woodworking
Bench dog
83928, 144 2N, 2411017, 241277, 241293, B27M 100, A01G 2308, B27C 901, B27G 1304
Patent
active
039318419
ABSTRACT:
Method and apparatus for comminuting a tree stump in its entirety while still rooted in the ground, utilizing a large, heavy cylindrical roller or drum rotating at high speed and having cutters mounted on a peripherical surface thereof for engaging and comminuting the stump from the side thereof. The roller is journaled for rotation about a horizontal axis in a carrier attached to the front end of a heavy four-wheel vehicle which is driven hydraulically over the ground surface from a selfcontained power source such as an internal combustion engine. The hydraulic system which drives the vehicle also includes a hydraulic motor mounted on the carrier for rotating the roller. The roller, through the carrier, is mounted to the vehicle frame for swinging movement in a vertical plane relative to the ground and a hydraulic cylinder included in the hydraulic circuit is provided for effecting said vertical swinging movement. Controls for operating the cutting roller and the vehicle are provided in an operator's cab on the vehicle.
REFERENCES:
patent: 1312450 (1919-08-01), McKay et al.
patent: 3198224 (1965-08-01), Hiley
patent: 3308860 (1967-03-01), De Shano
patent: 3625267 (1971-12-01), Welborn
patent: 3685557 (1972-08-01), Groce
patent: 3732905 (1973-05-01), Pickel
Bray W. D.
Byrne John J.
Dyson Edward E.
Yost Frank T.
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