Earth working – With wheel steering or actuator for horizontally angling... – Wheel on non-propelled device
Patent
1980-08-29
1981-11-24
Marlo, George J.
Earth working
With wheel steering or actuator for horizontally angling...
Wheel on non-propelled device
172311, 172314, 172255, 172421, 172417, 172418, 172413, A01B 6900, A01B 6322, A01B 6332
Patent
active
043018726
ABSTRACT:
An articulated plow is provided with a laterally swingable pull bar (31) and steerable intermediate support wheels (46, 47) which are controlled by a hydraulic system providing correlated movement through parallel connected hydraulic jacks (37, 66). A latch mechanism (86) for releasably securing the pull bar (31) in its plowing position of adjustment is operated by the pull bar control jack (37) through an operating lever (41) having a lost motion connection with a spring loaded latch pin (87). A locking plate (131) is provided to automatically lock the latch pin (87) in its retracted position when the pull bar (31) is moved to its transport position.
REFERENCES:
patent: Re26129 (1966-12-01), Pursche
patent: 1013740 (1912-01-01), Chandonnet
patent: 2780158 (1957-02-01), Pursche
patent: 2898125 (1959-08-01), Burch
patent: 2959234 (1960-11-01), Mason
patent: 4036306 (1977-07-01), Kinzenbaw
patent: 4044906 (1977-08-01), Schrag et al.
patent: 4135582 (1979-01-01), Farrant
Hastings Dawson W.
Wagner Robert L.
Allis-Chalmers Corporation
Marlo George J.
Schwab Charles L.
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