Adjustable guide rig structure for an agricultural implement

Details Adjustable guide rig structure for an agricultural implement Adjustable guide rig structure for an agricultural implement

1995-12-06

1997-09-23

Reese, Randolph A.

Earth working

Plural relatively movable tools

Plural tool groups relatively vertically movable because of...

172497, 172661, A01B 6502

Patent

active

056694512

ABSTRACT:
A floating row crop cultivator rig is supported behind a rigid guide tire. A guide wheel standard straddles a bracket which mounts the forward end of a rig parallel bar linkage to a toolbar. A tool support depends from the aft end of the parallel bar linkage and carries a ground engaging element directly rearwardly of the guide tire. Instead of a conventional rig tire to control rig depth, an adjustable length member with a lost motion connection controls the lowermost position of the linkage and thus of the tool support while permitting upward movement of the linkage when an obstacle is encountered. A rod threaded through a trunnion on the tool support has a forward end supported in a slotted bracket on the lower bar of the parallel linkage to adjustably limit the lowermost position of the linkage while permitting the linkage to pivot upwardly against the bias of rig weight and an adjustable down pressure spring arrangement to clear obstacles. A spring trip standard may be supported by the tool support to additionally provide trip protection.

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