Earth working – Diverse tools – With interconnected vertical adjustment
Patent
1975-12-11
1978-12-26
Marlo, George J.
Earth working
Diverse tools
With interconnected vertical adjustment
172174, 172462, 172467, 172421, 172605, 172500, 172604, 172244, 172398, A01B 6316, A01B 1516
Patent
active
041311620
ABSTRACT:
An earth working apparatus comprising a main frame having a hitch for detachably connecting the apparatus to a prime mover, a first ground working implement mounted on the main frame, a pair of support arms operatively connected at forwardly disposed ends thereof to the main frame for pivotal movement about a first transverse axis, ground engaging wheels mounted on the support arm, a lift arm operatively connected to each of the support arms for pivotal movement about a second transverse axis, a second earthworking implement mounted on the lift arms, chains interconnecting each of the lift arms and the main frame, a ground engaging wheel mounted on one of the frames and hydraulic cylinders operatively interconnecting each of the support arms and the main frame for angularly displacing the support arms relative to the main frame whereby upon actuation of the hydraulic cylinders when the ground engaging wheel is not in engagement with the ground, the working implements will be caused to move into and out of engagement with the ground, and upon actuation of the hydraulic cylinders when the wheel is in engagement with the ground, which will be caused to move substantially vertically to permit the apparatus to be attached and detached from the prime mover. This invention relates to an earth working apparatus and more particularly to an earth working apparatus which may be converted into a condition both permitting and facilitating the transportation of the apparatus both on and off public highways from one working site to another.
REFERENCES:
patent: 628363 (1899-07-01), Shoecraft
patent: 1248673 (1917-12-01), Kochendorfer
patent: 2548261 (1951-04-01), Hester
patent: 2882622 (1959-04-01), Howard
patent: 3111174 (1963-11-01), Fry et al.
patent: 3815266 (1974-06-01), Schmitz et al.
patent: 3930542 (1976-01-01), Van Der Lely et al.
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