Deep tillage ripper with independent, spring-mounted closing wheels
First Claim
1. A tillage tool comprising:
- a transverse tool bar adapted to be positioned at a predetermined height above the ground as the tool is advanced along a path of travel;
a shank assembly attached to said tool bar and including a generally upright shank having a tillage point at its lower end for lifting and fracturing the subsoil as the shank is advanced;
a pair of ground-engaging wheels located on opposite lateral sides of the shank above and behind the point; and
a pair of springs on opposite lateral sides of the shank independently mounting the corresponding ground wheels to the shank assembly for individual up and down movement of the wheels under the resistance of the respective springs as the wheels ride along and firm up soil tending to erupt on opposite sides of the shank.
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Accused Products
Abstract
A tillage tool includes a relatively narrow shank that slices through the soil while a ripper point at its lower end fractures and lifts the subsoil. Minimum surface disturbance adjacent the opposite sides of the shank is assured through the provision of a pair of independently mounted down-pressure wheels on opposite sides of the shank that engage and apply constant downward pressure against soil tending to erupt at the top surface. Each down pressure wheel is mounted to the shank assembly by its own leaf spring so that the two wheels react to ground changes independently of one another and without adversely affecting each other. A guide plate associated with each leaf spring prevents twisting of the spring as it flexes and provides stops for limiting the opposite extremes of up and down flexing of the spring.
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Citations
15 Claims
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1. A tillage tool comprising:
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a transverse tool bar adapted to be positioned at a predetermined height above the ground as the tool is advanced along a path of travel;
a shank assembly attached to said tool bar and including a generally upright shank having a tillage point at its lower end for lifting and fracturing the subsoil as the shank is advanced;
a pair of ground-engaging wheels located on opposite lateral sides of the shank above and behind the point; and
a pair of springs on opposite lateral sides of the shank independently mounting the corresponding ground wheels to the shank assembly for individual up and down movement of the wheels under the resistance of the respective springs as the wheels ride along and firm up soil tending to erupt on opposite sides of the shank. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification