Agricultural implement having rock shaft actuated transport whee

Details Agricultural implement having rock shaft actuated transport whee Agricultural implement having rock shaft actuated transport whee

1988-02-12

1989-06-20

Johnson, Richard J.

Earth working

Plural wheeled implements

Outrigged implement adjustable inwardly

172401, 172413, 172776, 280 4313, 280 4323, A01B 6322, A01B 7304

Patent

active

048402338

ABSTRACT:
A height adjusting mechanism for a framework that supports a multiplicity of ground working tools of an agricultural implement operating at variable depths of ground penetration is disclosed. The variability is acheived by rotation of framework supporting rock shafts pivoting around pivot points on wheel supported wheel frames, which in turn support the rock shafts; rotation causes the lateral spacing of the wheels to vary also. Additionally, flexibility of the framework optionally is provided by having certain fastenings and pivotal attachments between framework members in the form of resilient connections. The novel flexible framework is not critical to operation of the height adjusting mechanism, the latter being operable also with rigid framework.

REFERENCES:
patent: 2641886 (1953-06-01), Graham
patent: 3544129 (1970-12-01), Henry-Biabaud
patent: 3866688 (1975-02-01), Hansen
patent: 3880241 (1975-04-01), Vincent
patent: 3913683 (1975-10-01), Olsson
patent: 3990521 (1976-11-01), Ankenman
patent: 4355689 (1982-10-01), Friggstad
patent: 4387772 (1983-06-01), Bourgault
patent: 4676321 (1987-06-01), Friggstad

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