Earth working – With drive means for tool or cleaner – With non-driven tool
Patent
1984-05-10
1985-12-24
Johnson, Richard J.
Earth working
With drive means for tool or cleaner
With non-driven tool
172 32, 172112, A01B 3302, A01B 3518
Patent
active
045600090
ABSTRACT:
An improved apparatus for pulverizing aggregate masses of frangible materials deposited on and below earth surfaces, the apparatus having a frame; a power driven, substantially cylindrical rotor mounted on the frame and providing a plurality of radially extended teeth about its periphery; a mounting assembly attached on the frame and adapted to be connected rearwardly on a prime mover for forward earth traversing movement of the apparatus in towed relation thereto, the mounting assembly being selectively operable to elevate and lower the frame relative to an earth surface; and a porous grid hingedly mounted on the frame, the grid providing an anvil portion adapted operatively to be disposed below the rotor obliquely relative to the path of travel of the apparatus to urge materials engaged by the anvil portion into impacting engagement with the rotor periphery.
REFERENCES:
patent: 1197926 (1916-09-01), Goodson
patent: 1813651 (1931-07-01), Young
patent: 2368331 (1945-01-01), Seaman
patent: 2539136 (1951-01-01), Hite
patent: 3348619 (1967-10-01), Reynolds
patent: 3409088 (1968-11-01), Lindbeck
patent: 3998276 (1976-12-01), MacMillan
patent: 4005755 (1977-02-01), Bakke
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