Greaseless bushing for agricultural row unit
AssigneeHarvest International, Inc.
InventorJeffrey Alan Sivinski
Life of this patent
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Abstract
A greaseless bushing assembly for the gauge wheel arms of an agricultural row planter. The greaseless bushing includes an outer threaded tube for threaded mounting within the gauge wheel arm, and an internal non-metallic sleeve through which the wheel bolt extends for mounting the gauge wheel onto the arm. The sleeve provides dry lubrication for the bushing. The bushing may also include a lip or wiper seal at each end to prevent entry of dust into the bushing.
Claims18
A greaseless bushing assembly for a row planter, having a frame, a pair of discs on the frame to form a furrow in the ground, and a pair of gauge wheels mounted on arms on the frame on opposite sides of the discs, the greaseless bushing assembly comprising:
- an outer tube for threaded externally substantially along its length for threaded receipt in one of the arms of the frame;
- a jam nut on the outer tube threads to adjustably lock the bushing assembly on the one arm;
- and
- an internal non-metallic sleeve through which a bolt extends for mounting one of the arms to the frame.
A row planter comprising:
- a frame,
- a pair of discs on the frame to form a furrow in the ground;
- a pair of gauge wheels each being adjustably mounted on the frame by an arm;
- a greaseless bushing extending through the arm to mount each gauge wheel onto the frame;
- the bushing having external threads substantially along its length extending into and out of the arm;
- a lock nut on the threads of the bushing adjacent the arm to allow the bushing to be adjustably locked relative the arm;
- and
- a bolt extending through the bushing and into the frame for mounting the arm to the frame.
A method of mounting a gauge wheel onto a frame of an agricultural row unit, comprising:
- threading a greaseless bushing having external threads substantially along its full length into one end of a wheel arm mounted on the frame;
- adjustably locking the bushing relative to the arm with a jam nut on the bushing threads;
- and
- inserting a zerk-free bolt through the greaseless bushing on a wheel arm and into the frame.
Dependencies are inferred from the claim text.