Earth working – With separating after earth working
Patent
1974-02-14
1976-10-05
Pellegrino, Stephen C.
Earth working
With separating after earth working
172 33, 171132, A01B 1700, A01B 300
Patent
active
039839427
ABSTRACT:
A machine for treating soil which includes a holding structure supported on two wheels mounted centrally of the rear of said structure and two other wheels mounted on arms connected to independent hydraulic means on the sides of the front end of said structure, gang plows mounted between said wheels on said front end of said structure having weirs leading to a vibratable screen, windlasses with transversal vanes mounted above said screen to smash, crush and send backwards the soil received from the plows, breaker discs mounted in front of said plows and a side duct mounted between the rear end of said screen and the rear wheels for discarding material to the side of the machine.
REFERENCES:
patent: 1262563 (1918-04-01), Reilly
patent: 1500437 (1924-07-01), Burton
patent: 2060688 (1936-11-01), Pryor et al.
patent: 2528689 (1950-11-01), Flynt
patent: 2783698 (1957-03-01), Bambi
patent: 2788725 (1957-04-01), Wilkey et al.
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