Earth working – Plural wheeled implements – Outrigged implement adjustable inwardly
Patent
1975-03-19
1976-05-04
Pinkham, Richard C.
Earth working
Plural wheeled implements
Outrigged implement adjustable inwardly
74470, 172456, 280411A, A01B 4900, A01B 6332
Patent
active
039541444
ABSTRACT:
An improved chain lifter for foldable soil conditioner apparatus of the general type characterized by an elongated, foldable wing frame for soil conditioning members which is hingably mounted transversally on the rear of a main frame, is liftable from the ground by means of a lifting tower on the main frame, and is stabilized by reinforcing chains which extend rearwardly and outwardly from the main frame to the outer ends of the wing frame. Arm members which lift the chains have one end pivotally attached to the main frame whereas the other ends of the members are secured to the reinforcing chains intermediate to the ends thereof. Resilient biasing links interconnect the arm members with the upright lever of the lifting tower. Accordingly, the arms are pivoted upwardly and forwardly by means of the resilient biasing links when the wing frame is folded to a transport position, hence lifting the slackened reinforcing chains off the ground.
REFERENCES:
patent: 3302956 (1967-02-01), Sosalla
patent: 3428333 (1969-02-01), Nelson
patent: 3529674 (1970-09-01), Todd et al.
patent: 3548954 (1970-12-01), Lindemann
patent: 3637027 (1972-01-01), Kovar
patent: 3640345 (1972-02-01), Sosalla
patent: 3643742 (1972-02-01), Wellendorf
Pinkham Richard C.
Stouffer Richard T.
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