Earth working – With actuator adapted to lift tool for transport on wheeled... – Central group liftable vertically – side groups movable inwardly
Patent
1976-01-30
1977-12-06
Shapiro, Paul E.
Earth working
With actuator adapted to lift tool for transport on wheeled...
Central group liftable vertically, side groups movable inwardly
A01B 6332, A01B 6502
Patent
active
040611957
ABSTRACT:
An improved lock and lift mechanism for a foldable implement wherein the implement is provided with a main section and at least one wing pivotally mounted to the main section. The invention embodies mechanisms which permit the raising (folding) and lowering (unfolding) of the wing relative to the main section and further allow the locking and unlocking of the wing to the main section by a single operation, such as activating a fluid pressure cylinder. The lock and lift mechanism allows the wing to be secured in the lowered position without the necessity of maintaining pressure in the mechanism to keep the wing bar in the lowered position as the implement traverses the ground. The lock and lift mechanism employs registering passageways, one of which is provided on the main section transverse to the axis of the section and the other of which is provided on the wing. A pin is reciprocally mounted within the passageways and a linkage is provided to reciprocate the pin within the passageways so that the pin will lock the wing to the main section when the wing is in an extended position. A powered member is provided to move the pin through the rotatable bar attached to the wing and also elevate and lower the wing relative to the main section. The rotatable bar, after moving the pin through a limited distance, sufficient to retract it from the first passageway, engages a stop which permits the powered member to lift the wing section.
REFERENCES:
patent: 1639009 (1927-08-01), Singley
patent: 2011254 (1935-08-01), Nightingale
patent: 2544021 (1951-03-01), Holland
patent: 2719682 (1955-10-01), Handel
patent: 2887259 (1959-05-01), Merpels
patent: 3325216 (1967-06-01), Boeck
patent: 3693724 (1972-09-01), Fueslein et al.
patent: 3866689 (1975-02-01), Anderson
Austin Industries, Inc.
Shapiro Paul E.
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