Earth working – With drive means for tool or cleaner – Plural driven tools
Patent
1980-03-07
1982-12-14
Johnson, Richard J.
Earth working
With drive means for tool or cleaner
Plural driven tools
172117, 172446, 172 47, A01B 3306, A01B 3908
Patent
active
043633625
ABSTRACT:
An earth tilling machine is provided having a structural frame on which a plurality of earth working units are mounted and operable to cultivate or till the soil. Each earth working unit includes an earth working head having a plurality of earth working rotors each mounted for revolution about a respective vertical axis with the axes of all rotors of a particular head disposed in a common vertical plane. The rotors of each head are mounted for revolution about a single vertical axis which is coaxial with the axis of revolution of one of the rotors of each particular head whereby the effective working width of the head can be varied from a minimum of the effective working diameter of a single rotor to a maximum of the cumulative effective working length of all rotors carried by that head. The several earth working units are mounted for selective displacement and positioning on the frame in a direction transverse to the normal direction of movement of the machine to permit adjustment of the total effective operating width of any two adjacently disposed units and the extent of overlapping operation through selective rotation of each working head to a desired angled position relative to the normal direction of movement of the machine.
REFERENCES:
patent: 1063079 (1913-05-01), Stevens
patent: 2521417 (1950-09-01), Sefcovic
patent: 2732783 (1956-01-01), Murphy
patent: 3202221 (1965-08-01), Monk
patent: 3367425 (1968-02-01), Heeren
patent: 3667551 (1972-06-01), Lely
patent: 4042039 (1977-08-01), Lely
patent: 4072196 (1978-02-01), Lely
patent: 4148364 (1979-04-01), Scharmann
Johnson Richard J.
Stebens Robert E.
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