Woodworking – Rotary cutter
Patent
1974-08-09
1976-02-10
Yost, Frank T.
Woodworking
Rotary cutter
83698, 83928, 144 2N, 144230, 2411017, 2412822, 241277, 241293, B27G 1304, A01G 2308, B27C 901, B27M 100
Patent
active
039372618
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: 1039054 (1912-09-01), Hartzell
patent: 2299866 (1942-10-01), Willard
patent: 3321145 (1967-05-01), Gorman
patent: 3342230 (1967-09-01), Waldrop
patent: 3369797 (1968-02-01), Cobey
patent: 3389726 (1968-06-01), Good
patent: R15165 (1921-07-01), McKoy et al.
Bray W. D.
Byrne John J.
Dyson Edward E.
Yost Frank T.
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