Earth working – Plural wheeled implements – Outrigged implement adjustable inwardly
Patent
1999-11-10
2000-10-17
Novosad, Christopher J.
Earth working
Plural wheeled implements
Outrigged implement adjustable inwardly
172456, A10B 6332
Patent
active
061316695
ABSTRACT:
An agricultural planter is provided with hydraulically operated devices to effect the folding and unfolding of the planter support structure between operative and transport configurations. The planter includes a laterally extending tool bar that is pivoted about a transverse axis to forwardly roll the tool bar between a lowered field operating position and a raised transport position. The transverse pivot axis is located such that the first component of the pivotal movement of the tool bar from the field operating position is generally vertical, while a second component of the pivotal movement of the tool bar approaching the transport position is generally horizontal and forwardly of the first component. The headland position corresponds to a position in which the tool bar is raised sufficiently to move the planting units mounted thereon out of the ground to facilitate the turning of the implement at the end of the field. A sensor senses the positioning of the tool bar at the headland position and activates a valve in the hydraulic circuit to stop the operation of the tool bar actuators pivotally rotating the tool bar. A bypass, in the form of a solenoid that when selectively energized will override the signal of the sensor, selectively permits the tool bar to be raised the entire way to the transport position.
REFERENCES:
patent: 4418762 (1983-12-01), Page
patent: 5232054 (1993-08-01), Van Blaricon et al.
patent: 5449042 (1995-09-01), Landphair et al.
patent: 5647440 (1997-07-01), Barry et al.
patent: 5687798 (1997-11-01), Henry et al.
Friggstad Terrance A.
Hundeby David R.
Flexi-Coil Ltd.
Miller Larry W.
Novosad Christopher J.
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