Grain drill opener with separate placement and a concave disk therefor
First Claim
1. A minimum tillage disk opener assembly for depositing two materials in furrows in the soil in a single pass operation as the opener moves in a forward direction over the ground, the disk opener assembly including a drawbar, a first angled disk having a leading surface and a trailing surface and defining a shadow area rearwardly of the trailing surface, the first angled disk forming a first furrow in the soil, and tube structure for depositing a first material in the first furrow;
- a second disk supported from the drawbar and having a forward extremity overlapping the first angled disk, the second disk having a substantial furrow opening portion lying in the shadow area of the first disk and forming a second furrow in the soil for receiving a second material and covering the first furrow as the second furrow is formed, the furrow opening portion extending laterally into one of the sides of the first furrow so the first and second furrows have substantial overlapping portions when viewed in the forward direction, and boot structure depositing the second material in the second furrow at a location offset from the deposited first material, wherein the covering of the first furrow prevents contact between the first and the second materials.
1 Assignment
0 Petitions
Accused Products
Abstract
A combination seed and fertilizer opener having separate placement includes a first angled flat disk with a gauge wheel arrangement providing an initial furrow for a first material such as fertilizer. A second opener disk, smaller than the first and concave rather than flat, includes an edge that projects forwardly along the trailing side of the first disk to a forwardmost edge location adjacent the hub of the first disk. The hub of the concave disk is very closely adjacent the trailing edge of the large disk. A tube and boot assembly terminates within the concavity of the second disk near the rear periphery of the first disk. The concave disk forms a seed furrow to receive seed or second material from the tube and boot assembly. The front of the concave disk runs in undisturbed soil but is sufficiently close to the fertilizer furrow to press and cover the fertilizer. The second disk concavity also prevents excessive soil throw. The boot lies within the shadow of the large disk so that the boot does not have to push soil aside but acts primarily to prevent dirt from prematurely filling in the second furrow. A closing wheel is supported from the opener assembly directly behind the large disk and is angled to toward the concavity of the second disk to break soil from the seed furrow wall and close the seed furrow. The concave disk not only provides closing and furrowing functions with limited soil throw but also provides a compact bearing-receiving area. The edge of the concave disk is beveled on the inside of the concavity, opposite that of a conventional concave disk, to reduce forces necessary to form the seed furrow and cover the fertilizer.
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Citations
29 Claims
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1. A minimum tillage disk opener assembly for depositing two materials in furrows in the soil in a single pass operation as the opener moves in a forward direction over the ground, the disk opener assembly including a drawbar, a first angled disk having a leading surface and a trailing surface and defining a shadow area rearwardly of the trailing surface, the first angled disk forming a first furrow in the soil, and tube structure for depositing a first material in the first furrow;
- a second disk supported from the drawbar and having a forward extremity overlapping the first angled disk, the second disk having a substantial furrow opening portion lying in the shadow area of the first disk and forming a second furrow in the soil for receiving a second material and covering the first furrow as the second furrow is formed, the furrow opening portion extending laterally into one of the sides of the first furrow so the first and second furrows have substantial overlapping portions when viewed in the forward direction, and boot structure depositing the second material in the second furrow at a location offset from the deposited first material, wherein the covering of the first furrow prevents contact between the first and the second materials.
- View Dependent Claims (2, 3, 4, 5)
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6. A minimum tillage disk opener assembly for depositing two materials in furrows in the soil in a single pass operation as the opener moves in a forward direction over the ground, the disk opener assembly including a drawbar, a first angled disk having a leading surface and a trailing surface and defining a shadow area rearwardly of the trailing surface, the first angled disk forming a first furrow in the soil, and tube structure for depositing a first material in the first furrow;
- a second disk supported from the drawbar and overlapping the first angled disk in the forward direction, the second disk having a furrow opening portion lying in the shadow area of the first disk and forming a second furrow in the soil for receiving a second material and covering the first furrow as the second furrow is formed, and boot structure depositing the second material in the second furrow at a location offset from the deposited first material, wherein the covering of the first furrow prevents contact between the first and the second materials; and
wherein the second disk is concave and defines a disk concavity. - View Dependent Claims (7, 8)
- a second disk supported from the drawbar and overlapping the first angled disk in the forward direction, the second disk having a furrow opening portion lying in the shadow area of the first disk and forming a second furrow in the soil for receiving a second material and covering the first furrow as the second furrow is formed, and boot structure depositing the second material in the second furrow at a location offset from the deposited first material, wherein the covering of the first furrow prevents contact between the first and the second materials; and
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9. A minimum tillage disk opener assembly for depositing two materials in furrows in the soil in a single pass operation as the opener moves in a forward direction over the ground, the disk opener assembly including a drawbar, a first angled disk having a leading surface and a trailing surface and defining a shadow area rearwardly of the trailing surface, the first angled disk forming a first furrow in the soil, and tube structure for depositing a first material in the first furrow, a second disk supported from the drawbar and overlapping the first angled disk in the forward direction, the second disk having a furrow opening portion lying in the shadow area of the first disk and forming a second furrow in the soil for receiving a second material and covering the first furrow as the second furrow is formed, and boot structure depositing the second material in the second furrow at a location offset from the deposited first material, wherein the covering of the first furrow prevents contact between the first and the second materials;
- and wherein the second disk has a convex side supported adjacent the tube structure, and a concave side opening away from the first angled disk.
- View Dependent Claims (10, 11, 12, 13, 14)
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15. A disk opener assembly for depositing material in the soil as the opener moves in a forward direction over the ground, the disk opener assembly including a drawbar, a first angled disk forming a first furrow in the soil, the first angled disk defining leading and trailing disk surfaces and a protective shadow area behind the trailing surface, tube structure for depositing a first material in the first furrow;
- a second disk supported from the drawbar, the second disk having a furrow forming portion lying partially in the shadow area and forming a second furrow in the soil for receiving a second material, the second disk covering the first furrow as the second furrow is formed, and boot structure depositing the second material in the second furrow, wherein the second disk is concave and includes an outermost edge having a bevel extending to the inside of the concavity.
- View Dependent Claims (16, 17, 18)
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19. A disk opener assembly for depositing material in the soil as the opener moves in a forward direction over the ground, the disk opener assembly including a drawbar, a first angled disk forming a first furrow in the soil, the first angled disk defining leading and trailing disk surfaces and a protective shadow area behind the trailing surface, tube structure for depositing a first material in the first furrow;
- a second disk supported from the drawbar, the second disk having a furrow forming portion lying partially in the shadow area and forming a second furrow in the soil for receiving a second material, the second disk covering the first furrow as the second furrow is formed, boot structure depositing the second material in the second furrow, and wherein the second disk is concave opening away from the trailing disk surface, overlaps the first angled disk, and has a leading edge, and wherein the leading edge of the second disk lies in the shadow area of the first angled disk.
- View Dependent Claims (20, 21, 22)
- 23. A dual placement opener assembly for depositing first and second materials in the soil as the opener assembly moves in a forward direction over the ground, the opener assembly including a drawbar, a first furrow forming device forming a first furrow in the soil, tube structure for depositing the first material in the first furrow, a trailing disk supported from the drawbar, the trailing disk having a leading edge portion forming a second furrow in the soil offset above and to one side of the first furrow for receiving the second material, the trailing disk covering the first furrow as the second furrow is formed, and boot structure depositing the second material in the second furrow, wherein the trailing disk is concave and the boot structure lies substantially within the concavity of the trailing disk.
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28. A disk opener assembly for depositing material in the soil as the opener moves in a forward direction over the ground, the disk opener assembly including a drawbar, a first angled disk forming a first furrow in the soil, the first angled disk defining leading and trailing disk surfaces and a protective shadow area behind the trailing surface, tube structure for depositing a first material in the first furrow;
- a second disk supported from the drawbar, the second disk having a furrow forming portion lying partially in the shadow area and forming a second furrow in the soil for receiving a second material, the second disk covering the first furrow as the second furrow is formed, and boot structure depositing the second material in the second furrow, wherein the boot structure lies at least partially in the shadow area, and wherein the second disk is concave, and the boot structure includes a planar runner portion lying substantially within the concavity of the second disk.
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29. A disk opener assembly for depositing material in the soil as the opener moves in a forward direction over the ground, the disk opener assembly including a drawbar, a first angled disk forming a first furrow in the soil, the first angled disk defining leading and trailing disk surfaces and a protective shadow area behind the trailing surface, tube structure for depositing a first material in the first furrow;
- a second disk supported from the drawbar, the second disk having a furrow forming portion lying partially in the shadow area and forming a second furrow in the soil for receiving a second material, the second disk covering the first furrow as the second furrow is formed, and boot structure depositing the second material in the second furrow, and wherein the first angled disk is flat, the second disk is concave and has a concave side opening away from the first angled disk, the concave side urging soil against the first material as the second furrow is being formed, thereby positively providing separation of the first material from the second material.
Specification