Combined depth-control and wing-lift hydraulic circuit
First Claim
1. In an implement having a tool bar spaced above the ground, the tool bar including at least one wing pivotally connected thereto and a wing wheel mounted on the wing for operationally supporting the wing on the ground, a combined depth-control, wing-lift and wing wheel tuck circuit comprising:
- depth-control means for raising and lowering the tool bar relative to the ground;
wing-lift means for causing the wing to be partially rotated about the tool-bar pivot between a substantially horizontally-disposed position and a substantially vertically-disposed position, relative to the ground; and
wheel-tuck means for moving the wing wheel between an inwardly-drawn position proximate to the wing and second position spaced further from the wing than the inwardly-drawn position, and for causing the wing wheel to be disposed in one of these two wheel-spacing positions for a first preselected period of time.
7 Assignments
0 Petitions
Accused Products
Abstract
A combined depth-control and wing-lift hydraulic circuit is disclosed. The circuit is preferably used in combination with a farm implement having a tool bar. The tool bar is horizontally disposed relative to the ground, and is carried by the implement. The hydraulic circuit comprises means to raise and lower the tool bar relative to the ground, thereby to effect depth control. The tool bar includes pivotally connected wings. Each wing carries an associated wing wheel. The hydraulic circuit includes means for causing rotative movement of each wing about its associated tool bar pivot between a substantially horizontally-disposed position and a substantially vertically-disposed position, relative to the ground, and for further causing each wing to be selectively disposed at one of these positions, thereby to effect wing lift. Each wing wheel is coupled to, and is distally spaced from and located beneath, its associated wing structure when such wing is in the substantially horizontally-disposed position. Also, each wing wheel is outwardly spaced from its associated wing structure when the wing is in the substantially vertically-disposed position. The hydraulic circuit further includes means for causing each wing wheel to be drawn inwardly toward its associated wing structure when such wing is in the substantially vertically-disposed position, thereby to effect a special "wheel-tuck" feature of the present invention. The hydraulic circuit can additionally be used to control operation of a marker arm for forming marker furrows.
60 Citations
16 Claims
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1. In an implement having a tool bar spaced above the ground, the tool bar including at least one wing pivotally connected thereto and a wing wheel mounted on the wing for operationally supporting the wing on the ground, a combined depth-control, wing-lift and wing wheel tuck circuit comprising:
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depth-control means for raising and lowering the tool bar relative to the ground; wing-lift means for causing the wing to be partially rotated about the tool-bar pivot between a substantially horizontally-disposed position and a substantially vertically-disposed position, relative to the ground; and wheel-tuck means for moving the wing wheel between an inwardly-drawn position proximate to the wing and second position spaced further from the wing than the inwardly-drawn position, and for causing the wing wheel to be disposed in one of these two wheel-spacing positions for a first preselected period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. In a farm implement having a horizontally-disposed tool bar spaced above the ground, the tool bar including at least one wing connected to an end portion thereof through a pivot carried by the tool bar and a wing wheel mounted on the wing for operationally supporting the weight of the wing on the ground, a combined depth-control, wing-lift and wing wheel tuck hydraulic circuit comprising:
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depth-control means for raising and lowering the tool bar relative to the ground; wing-lift means for causing the wing to be partially rotated about the tool-bar pivot between a substantially horizontally-disposed position and a substantially vertically-disposed position, relative to the ground; and wheel-tuck means for moving the wing wheel between an inwardly-drawn position proximate to the wing and a second position spaced further from the wing than the inwardly-drawn position, and for causing the wing wheel to be disposed in one of these two wheel-spacing positions for a preselected period of time. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification