Earth working – With actuator adapted to lift tool for transport on wheeled... – Central group liftable vertically – side groups movable inwardly
Patent
1987-10-30
1989-03-14
Steinberger, Brian S.
Earth working
With actuator adapted to lift tool for transport on wheeled...
Central group liftable vertically, side groups movable inwardly
111 52, A01B 6300
Patent
active
048117951
ABSTRACT:
A seed drill comprising a frame (1), a beam (14) that is mounted on the frame (1) so as to extend transversely of the direction of forward motion of the drill and that has a plurality of coulters (5) mounted along the beam (14) so as to trail therefrom and engage the ground when in work, the beam (14) comprising a central beam portion (29) and an outer beam portion (30) each side that is pivotally connected to the central beam portion (29) so as to be pivotable upwards to a transport position, characterized in that a strut assembly (39) is provided at each side of the drill between the frame (1) and the respective outer end of the beam (14) so as to be inclined downwards towards said outer end when the outer beam portion (30) is lowered, and pivotal connections (45, 47) being provided between the ends of the strut assembly (39) and the frame (17) and the outer beam portion (30) so that the strut assembly (39) can pivot upwards with the outer beam portion (30) to the transport position, the pivotal connection (4) between the strut assembly (39) and the outer beam portion (30) comprising an elongated member (46) that is pivotally connected to the strut assembly (39) and is slidably received within the outer end of the beam (14) so as to telescope therewith as the outer beam portion (30) and the strut assembly (39) is raised and lowered, and releasable retaining means (53) that serves to hold the elongated member (46) against withdrawal from the outer beam portion (30) when both are lowered.
REFERENCES:
patent: 3669195 (1972-06-01), Green et al.
patent: 3804036 (1974-04-01), Seifert, Jr.
patent: 4147217 (1979-04-01), Hawkins, Jr.
patent: 4715302 (1987-12-01), Briggs
Dean Malcolm
Withers Kenneth I.
Massey-Ferguson Services N.V.
Steinberger Brian S.
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