Trash cleaning structure for a furrow opening device
First Claim
1. A clearing disk adapted for forward movement over the ground at an angle to the forward direction for clearing trash from a narrow band of ground forwardly of a ground penetrating tool, the disk having a preselected diameter and including a periphery having teeth with trash-penetrating pointed teeth ends, the teeth ends separated by shallow rounded gullets located radially inwardly of the teeth ends a distance less than approximately one inch and defining a serrated gear-tooth shaped periphery, the gullets adapted for pressing the trash against the ground and limiting the depth of penetration of the disk as the angled clearing disk moves the trash toward the side of the penetrating tool, wherein the disk is generally planar with the teeth ends centered between the rounded gullets and extending perpendicularly to the plane of the disk, the teeth ends spaced approximately one inch apart and the gullets are struck on the arc of a circle having a radius of approximately four-tenths of an inch with radius center located approximately one-eighth of an inch from the teeth ends.
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Accused Products
Abstract
A shallow-toothed clearing disk pivotally supported from the upper end of the opener drawbar assembly. A four bar linkage is connected to the forward end of the drawbar by a bracket which includes at least one link and corresponding pivot structure located above the drawbar to increase trash clearance and reduce trash build-up. The shallow rounded gullets between pointed teeth provide good disk depth control and trash penetration while reducing soil penetration and soil disturbance. The gullets also hold and prevent sliding of trash away from the clearing influence of the angled disk. The disk effectively clears trash to the side of the opener opposite the gauge wheel to assure optimum depth gauging for the opener. The gear-type structure is capable of operating over a wide range of down pressures and loads while breaking any existing crust in the cleared path with little soil disturbance. The disk provides minimum tillage with little soil and trash throw to assure uniform planting depth, seed germination and plant growth without stimulation of weed growth, both in the row being cleared and in adjacent rows.
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Citations
12 Claims
- 1. A clearing disk adapted for forward movement over the ground at an angle to the forward direction for clearing trash from a narrow band of ground forwardly of a ground penetrating tool, the disk having a preselected diameter and including a periphery having teeth with trash-penetrating pointed teeth ends, the teeth ends separated by shallow rounded gullets located radially inwardly of the teeth ends a distance less than approximately one inch and defining a serrated gear-tooth shaped periphery, the gullets adapted for pressing the trash against the ground and limiting the depth of penetration of the disk as the angled clearing disk moves the trash toward the side of the penetrating tool, wherein the disk is generally planar with the teeth ends centered between the rounded gullets and extending perpendicularly to the plane of the disk, the teeth ends spaced approximately one inch apart and the gullets are struck on the arc of a circle having a radius of approximately four-tenths of an inch with radius center located approximately one-eighth of an inch from the teeth ends.
- 9. A clearing disk adapted for forward movement over the ground at an angle to the forward direction for clearing trash from a narrow band of ground forwardly of a ground penetrating tool, the disk being substantially planar and having a diameter in the range of between eight to twelve inches and including a periphery having teeth with trash-penetrating pointed teeth ends, the teeth ends spaced approximately one inch apart and separated by shallow rounded gullets struck on the arc of a circle having a radius of approximately four-tenths of an inch and defining gullet centers located between the teeth, the gullet centers located radially inwardly from the teeth points approximately one-eighth of an to thereby reduce hairpinning of the trash between the teeth, the gullets and teeth defining a chain wheel shaped periphery, the gullets adapted for pressing the trash against the ground as the angled clearing disk moves the trash toward the side of the penetrating tool and limiting depth of penetration of the disk, and wherein the periphery includes a preselected number of teeth, the preselected number being at least approximately three times the diameter in inches of the disk.
Specification