Earth working – With actuator on trailing ground supported frame for moving... – Vertically
Patent
1981-01-02
1983-07-05
Johnson, Richard J.
Earth working
With actuator on trailing ground supported frame for moving...
Vertically
172680, 280474, 280476R, A01B 5904
Patent
active
043913342
ABSTRACT:
A hitch assembly for interconnecting an agricultural tool with a towing vehicle to allow relative angular vertical articulation between the tool and vehicle during use and to lock rigidly with the tool for transport. The hitch includes two pivotably interconnected frames. A first wheel supported frame is adapted to be connected to the towing vehicle. The second frame is adapted to be rigidly connected to the tool. A control mechanism operates from the vehicle hydraulic system and is connected between the frames. The mechanism is operative to lock the frames together rigidly or to unlock the frames for relatively free pivotal movement. The control means includes provisions for tipping the tool forward and downward as it is being lowered to a ground-working, operative position. The effective height of the frames can also be varied to correspond with the height of the tool at its ground-working operative position.
REFERENCES:
patent: 2379170 (1945-06-01), McDaniel
patent: 2493405 (1950-01-01), Hedgpeth
patent: 2651858 (1953-09-01), Schwindt
patent: 2780158 (1957-02-01), Pursche
patent: 2818664 (1958-01-01), Bond
patent: 2830519 (1958-04-01), Chandler
patent: 3202225 (1965-08-01), Richardson
patent: 3777823 (1973-12-01), Holfeld
Calkins Manufacturing Company
Johnson Richard J.
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