Conservation opener
First Claim
1. A single disk opener assembly adapted for attachment to a frame and movable forwardly over a field where trash is present for opening a furrow in the soil, the assembly comprising:
- drawbar means having a first end adapted for atachment to the frame, and a second end;
a single disk blade connected to the second end of the drawbar means for rotation about an axis offset at an angle to the direction transverse to the forward direction for forming a furrow, the angled blade thus defining forwardly and rearwardly directed blade surfaces;
a seed tube located closely adjacent the rearwardly directed surface for depositing material in the formed furrow;
a gauge wheel, and means connecting the gauge wheel to the drawbar for rotation adjacent the forwardly directed surface of the blade about an axis generally parallel to but offset from the disk blade axis to limit the depth of penetration of the blade, said gauge wheel including axially projecting means for cleaning the forwardly directed blade surface; and
depth adjusting means for adjusting the gauge wheel relative to the disk blade including a shaft having a first end portion rotatably supported by the second end of the drawbar means and rotatable about an axis corresponding to the disk blade axis, said shaft including a distal end portion projection through the disk blade, an arm connected to the distal end portion and extending generally perpendicular to the shaft, and wherein the means connecting the gauge wheel includes means for rotatably mounting the gauge wheel on the arm, and means for selectively securing the shaft in one of a plurality of angularly rotated positions, said means for securing located adjacent the rearwardly directed blade surface.
1 Assignment
0 Petitions
Accused Products
Abstract
A single disk opener blade is supported for rotation about a horizontal axis offset approximately seven degrees from the transverse direction. A seed tube extends closely adjacent the disk blade forwardly of the rotational axis generally in the shadow of the leading edge of the blade. The tube is angled around the disk blade hub to provide a narrow profile and to reduce the vertical velocity of the material deposited in the furrow. A furrow-firming and blade-scraping extension is connected to the lower end of the tube and extends rearwardly to a location behind the axis. The side of the firming extension is located transversely beyond the shadow of the disk blade to help form one side of the seed trench and to permit the seed to settle in the trench. Depth control structure includes a wheel support arm fixed to one end of the disk blade spindle and a quadrant fixed to the opposite end of the spindle for selectively adjusting the arm. A depth control wheel is mounted on the arm about an axis offset from the axis of the disk blade for rotation against the leading side of the blade to clean the blade, hold down trash and dirt, and provide positive depth control.
118 Citations
25 Claims
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1. A single disk opener assembly adapted for attachment to a frame and movable forwardly over a field where trash is present for opening a furrow in the soil, the assembly comprising:
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drawbar means having a first end adapted for atachment to the frame, and a second end; a single disk blade connected to the second end of the drawbar means for rotation about an axis offset at an angle to the direction transverse to the forward direction for forming a furrow, the angled blade thus defining forwardly and rearwardly directed blade surfaces; a seed tube located closely adjacent the rearwardly directed surface for depositing material in the formed furrow; a gauge wheel, and means connecting the gauge wheel to the drawbar for rotation adjacent the forwardly directed surface of the blade about an axis generally parallel to but offset from the disk blade axis to limit the depth of penetration of the blade, said gauge wheel including axially projecting means for cleaning the forwardly directed blade surface; and depth adjusting means for adjusting the gauge wheel relative to the disk blade including a shaft having a first end portion rotatably supported by the second end of the drawbar means and rotatable about an axis corresponding to the disk blade axis, said shaft including a distal end portion projection through the disk blade, an arm connected to the distal end portion and extending generally perpendicular to the shaft, and wherein the means connecting the gauge wheel includes means for rotatably mounting the gauge wheel on the arm, and means for selectively securing the shaft in one of a plurality of angularly rotated positions, said means for securing located adjacent the rearwardly directed blade surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An opener assembly adapted for attachment to a frame and movable forwardly over a field where trash is present for opening a furrow in the soil, the assembly comprising:
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drawbar means having a first end adapted for attachment to the frame, and a second end; a disk blade connected to the second end of the drawbar means for rotation about an axis offset at an angle to the direction transverse to the forward direction for forming a furrow, the angled blade thus defining forwardly and rearwardly directed blade surfaces; a seed tube located closely adjacent the rearwardly directed surface for depositing material in the formed furrow; a gauge wheel, and means connecting the gauge wheel to the drawbar in contact with the forwardly directed surface of the blade for rotation about an axis generally parallel to but offset from the disk blade axis to limit the depth of penetration of the blade and clean the forwardly directed blade surface while preventing soil from being thrown adjacent the furrow; and depth adjusting means for moving the gauge wheel relative to the disk blade, said depth adjusting means comprising;
an arm having a first end connected for rotation about an axis corresponding to the disk blade axes, and a distal end, means rotatably mounting the gauge wheel on the distal end, means for rotating the arm about its rotational axis including a shaft connected to the first end of the arm and extending through the disk blade, wherein the disk blade is rotatably mounted on the shaft, means including a quadrant connected to the end of the shaft opposite the end connected to the arm for rotating the shaft and maintaining the shaft in one of a plurality of angularly rotated positions, and wherein the drawbar means includes an extension projecting radially outwardly relative to the disk blade axis, and means for adjustably securing the quadrant relative to the extension.
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12. A single disk opener assembly adapted for attachment to a frame and movable forwardly over a field where trash is present for opening a furrow in the soil, the assembly comprising:
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drawbar means having a first end adapted for attachment to the frame, and a second end; a disk blade connected to the second end of the drawbar means for rotation about an axis offset at an angle to the direction transverse to the forward direction for forming a furrow, the angled blade thus defining forwardly and rearwardly directed blade surfaces; a seed tube located closely adjacent the rearwardly directed surface for depositing material in the formed furrow; a gauge wheel, and means connecting the gauge wheel to the drawbar for rotation adjacent the forwardly directed surface of the blade about an axis generally parallel to but offset from the disk blade axis to limit the depth of penetration of the blade, said gauge wheel including axially projecting means for cleaning the forwardly directed blade surface; and wherein the seed tube includes an upper portion which extends downwardly along the rearwardly directed disk blade surface forwardly of the axis of rotation of the blade to a connection with an angled portion angled toward the rearwardly directed blade surface, said seed tube further comprising a lower end portion connected to the angled portion and terminating in an opening located below the axis of the disk blade adjacent the bottom of the blade, a soil-firming and blade-scraping extension supported by the seed tube adjacent the lower end portion of the seed tube, wherein said scraping extension includes an outermost soil-firming surface adapted for engaging the soil on the side of the furrow opposite the rearwardly directed blade surface, said soil-firming surface sloping downwardly and rearwardly from the seed tube at a location forwardly of and below the axis of rotation and terminating rearwardly and below the axis adjacent the bottom of the disk blade and forwardly of the rearmost extremity of the disk blade, means pivotally connecting the seed tube to the drawbar means, and means for biasing the lower end portion of the seed tube towards the rearwardly directed blade surface. - View Dependent Claims (13)
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14. A single disk opener assembly for forming a trench in the soil and depositing seed therein, the assembly comprising:
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a drawbar adapted for towing forwardly over the soil, a single flat disk blade having first and second sides and a hub; means rotatably mounting the disk blade on the drawbar for rotation about a first axis in the soil, said first axis being generally horizontal and transverse to the forward direction; a gauge wheel supported from the drawbar for rotation adjacent the first side of the disk blade about a second axis offset from the first axis; means for adjusting the gauge wheel relative to the blade comprising a spindle, means rotatably connecting the spindle to the drawbar for rotation about the first axis, an elongated arm having first and second ends, said first end connected to the spindle for rotation therewith and extending radially therefrom to the second end, and means rotatably mounting the gauge wheel on the second end; a seed tube extending downwardly toward the soil closely adjacent the second side of the disk blade and wherein the seed tube includes means for directing seed downwardly to a location adjacent the hub generally along a vertical path and then inwardly and rearwardly around the hub towards the blade, said means for directing including an upright portion lying generally along a vertical fore-and-aft plane and a central seed tube portion angled with respect to the vertical fore-and-aft plane, said central seed tube portion lying closely adjacent the hub and imparting a transverse component to the seed for reducing the vertical velocity of the seed; and means extending rewardly from the seed tube adjacent the lower portion of the disk blade for forming a trench in the soil and permitting seed from the seed tube to settle into the trench. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A single disk opener assembly for forming a trench in the soil and depositing seed therein, the assembly comprising:
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a drawbar adapted for towing forwardly over the soil; a single flat disk blade having first and second sides and a hub; means rotatably mounting the disk blade on the drawbar for rotation about an axis offset at an angle to the direction transverse to the forward direction for forming a furrow, the angled blade thus defining forwardly and rearwardly directed blade surfaces; a gauge wheel supported from the drawbar for rotation adjacent the forwardly directed blade surface; a seed tube extending downwardly toward the soil closely adjacent the rearwardly directed surface; means extending rearwardly from the lower end of the seed tube adjacent the lower portion of the rearwardly directed blade surface for forming a trench in the soil and permitting seed from the seed tube to settle into the trench; and a trailing press wheel and means supporting the press wheel from the drawbar for forming the soil over the seed, said the press wheel having a forward portion which extends forwardly of the rear portion of the disk blade closely adjacent the rearwardly directed surface of the disk blade. - View Dependent Claims (21)
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22. In a single disk opener assembly adapted for forward movement through the soil for forming a trench in the soil and depositing material therein, said assembly including a drawbar member, a flat coulter with a hub mounted for rotation on the drawbar member, a seed boot assembly comprising:
- a rigid seed tube having an upright upper portion, a central portion angled rearwardly and transversely with respect to the upper portion, and a lower end portion connected to the central portion;
means pivotally connecting the seed tube to the drawbar member for pivoting with respect to the drawbar member about an axis located forwardly of and above the coulter hub, the central portion extending around the hub toward one side of the coulter, and the lower end portion located below the hub;
an extension portion connected to the lower end portion of the seed tube and including means for scraping said one side of the coulter; and
spring means resiliently biasing the seed tube assembly about the axis for moving the extension portion towards said one side of the coulter. - View Dependent Claims (23, 24, 25)
- a rigid seed tube having an upright upper portion, a central portion angled rearwardly and transversely with respect to the upper portion, and a lower end portion connected to the central portion;
Specification