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US 4,062,410 AGranted
Adjustable moldboard for variable speed plowing
AssigneeAllis-Chalmers Corporation
InventorRichard G. Moe
Life of this patent
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Abstract
A plow bottom is pivotally connected to the stub beam on a substantially vertical axis and yieldable biasing devices are provided which permit the moldboard to pivot about the axis as plowing speed is increased. Both mechanical and fluid biasing devices are disclosed together with an additional embodiment wherein a hydraulic actuator under the control of the operator is used to pivotally adjust the plow bottom.
Claims9
A self-adjusting moldboard plow for variable speed plowing comprising:
- a frame including a downwardly depending stub beam,
- a plow bottom including a frog,
- a pivot structure pivotally connecting the bottom front of said stub beam to said frog for horizontal pivotal movement of said plow bottom relative to said stub beam,
- cooperating abutments on said plow bottom and stub beam limiting pivotal movement of said plow beam in one direction, said abutments normally being in engagement, and
- biasing means operatively interposed between said plow bottom and said stub beam urging said plow bottom in said one direction, said plow bottom automatically pivoting against the action of said biasing means in a direction opposite to said one direction when said plow bottom encounters predetermined soil resistance during plowing.
2 more elements
Dependencies are inferred from the claim text.