HARROW FRAME AND HARROW FORMED THEREWITH
First Claim
Patent Images
1. A harrow frame for supporting a harrow ground working tool, the harrow frame comprising:
- a hitch, a center unit, a right tool support arm being elongate and having a secured end and an outboard end, a left tool support arm being elongate and having a secured end and an outboard end, the left tool support arm and the right tool support arm each acting as levers each with a fulcrum adjacent their secured ends through which they engage the center unit, a drive system acting adjacent the secured ends of the tool support arms to pivot the left tool support arm and the right tool support arm about their fulcrums to move them between a first relative angle and a second relative angle and a lock to releasably lock the left tool support arm and the right tool support arm into the first relative angle and the second relative angle, the drive and the lock being controllable remotely such that the left tool support arm and the right tool support arm can be pivoted about their fulcrums while the harrow frame is being moved along a ground surface.
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Abstract
A harrow frame may be operable to permit pivoting of its ground working tool support arms between a first relative angle and a second relative angle. Pivoting may be achieved through a drive system and a lock controllable remotely such that the tool support arms can be pivoted about their fulcrums “on-the-fly” while the harrow frame is being moved along a ground surface. In addition or alternately, a harrow frame may also be folded to have a width less than 8.5 feet to facilitate transport.
26 Citations
27 Claims
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1. A harrow frame for supporting a harrow ground working tool, the harrow frame comprising:
- a hitch, a center unit, a right tool support arm being elongate and having a secured end and an outboard end, a left tool support arm being elongate and having a secured end and an outboard end, the left tool support arm and the right tool support arm each acting as levers each with a fulcrum adjacent their secured ends through which they engage the center unit, a drive system acting adjacent the secured ends of the tool support arms to pivot the left tool support arm and the right tool support arm about their fulcrums to move them between a first relative angle and a second relative angle and a lock to releasably lock the left tool support arm and the right tool support arm into the first relative angle and the second relative angle, the drive and the lock being controllable remotely such that the left tool support arm and the right tool support arm can be pivoted about their fulcrums while the harrow frame is being moved along a ground surface.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for operating a harrow comprising:
- providing a harrow including a center unit, a right tool support arm including a ground working tool secured thereto, a left tool support arm including a ground working tool secured thereto, and a drive system operable to pivot the right tool support arm and the left tool support arm relative to the center unit, operating the drive system to pivot the right tool support arm and the left tool support arm into a first operational position at a first angle of aggression;
working a field with the harrow in the first operational position;
remotely operating the drive system to pivot and lock the right tool support arm and the left tool support arm into a second operational position at a second angle of aggression different from the first angle of aggression; and
working a field with the harrow in the second operational position. - View Dependent Claims (22, 23, 24, 25, 26, 27)
- providing a harrow including a center unit, a right tool support arm including a ground working tool secured thereto, a left tool support arm including a ground working tool secured thereto, and a drive system operable to pivot the right tool support arm and the left tool support arm relative to the center unit, operating the drive system to pivot the right tool support arm and the left tool support arm into a first operational position at a first angle of aggression;
Specification