CA2299736A1 - Seed opener with improved press wheel attachment - Google Patents
Seed opener with improved press wheel attachment Download PDFInfo
- Publication number
- CA2299736A1 CA2299736A1 CA 2299736 CA2299736A CA2299736A1 CA 2299736 A1 CA2299736 A1 CA 2299736A1 CA 2299736 CA2299736 CA 2299736 CA 2299736 A CA2299736 A CA 2299736A CA 2299736 A1 CA2299736 A1 CA 2299736A1
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- frame
- press wheel
- seed
- opener
- downward pressure
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Abstract
A seed opener attached to a seed drill has a trailing press wheel attached to a press wheel frame. The press wheel frame is pivotally attached to a seed opener frame, which, in turn, is pivotally attached to the seed drill main frame. The angle of attachment between the press wheel frame and the seed opener frame is adjustable to allow the press wheel to be used as a depth gauge for the opener blade or blades. Constant downward pressure is applied to the press wheel frame via a down pressure rod and spring extending between the press wheel frame and the drill frame. The use of down pressure on the press wheel frame allows the press wheel to maintain ground contact, with downward pressure, at all times, even when the opener blade (s) encounter an obstacle, thus improving seed distribution and germination. In addition, by placing downward pressure on the press wheel frame instead of the opener frame, the load on the opener blade (s) is minimized even when they encounter, and ride up and over, a fixed obstacle.
Description
a SEED OPENER WITH IMPROVED PRESS WHEEL ATTACHMENT
Field of the Invention The present invention relates to a conventional or minimum till seed opener for use with a seed drill in which the seed opener has a trailing press wheel attached to a press wheel frame. The press wheel frame is pivotally attached to a seed opener frame, which, in turn, in pivotally attached to the seed drill main frame. Constant downward pressure is applied to the press wheel frame via a down pressure rod and spring extending between the press wheel frame and the drill frame.
Back9~round of the Invention Agricultural seed drills are typically equipped with seed openers in the form of single or pairs of cutting discs or opener blades which open the soil immediately ahead of a seed tube drop. The opener blades form a seed furrow into which the seeds are dropped and a trailing press wheel covers the seed furrow and seeds. The press wheel is typically connected to a press wheel frame which is pivotally attached to the opener frame such that the angle between press wheel frame and seed opener frame is selectively adjustable. This allows the press wheel to act as an adjustable depth gauge for setting the depth at which the seed opener runs.
Field of the Invention The present invention relates to a conventional or minimum till seed opener for use with a seed drill in which the seed opener has a trailing press wheel attached to a press wheel frame. The press wheel frame is pivotally attached to a seed opener frame, which, in turn, in pivotally attached to the seed drill main frame. Constant downward pressure is applied to the press wheel frame via a down pressure rod and spring extending between the press wheel frame and the drill frame.
Back9~round of the Invention Agricultural seed drills are typically equipped with seed openers in the form of single or pairs of cutting discs or opener blades which open the soil immediately ahead of a seed tube drop. The opener blades form a seed furrow into which the seeds are dropped and a trailing press wheel covers the seed furrow and seeds. The press wheel is typically connected to a press wheel frame which is pivotally attached to the opener frame such that the angle between press wheel frame and seed opener frame is selectively adjustable. This allows the press wheel to act as an adjustable depth gauge for setting the depth at which the seed opener runs.
Examples of prior art seed openers and attached press wheels are found as early as 1904 in U.S. Patent No.
778,123 to W. Fetzer. A more modern version is taught in U.S. Patent No. 4,116,140 to Joseph Anderson et al. Many other examples are found in the patent literature.
A problem common with each of these prior art seed openers and press wheels is the linkage between the press wheel frames and the seed opener frames when the seed opener blade or blades encounter a hard object, such as a rock. When the opener blades) ride up and over the obstacle in typical seed drills, the press wheel frame is lifted up as well. This causes the press wheel to lose contact with the soil for the interval of time that the seed opener blade is elevated. This results in poor seed coverage and resultant poor seed germination in the area immediately behind the obstacle where seeds have already been dropped. Furthermore, down pressure on the seed opener frame is typically provided by a down pressure spring extending between the seed drill main frame and the opener frame. This results in extremely high loads on the opener blades as they trip up and over an obstacle due to the simultaneous upward pressure applied by the obstacle countered by the down pressure provided by the spring.
This causes rapid opener blade and bearing failure.
778,123 to W. Fetzer. A more modern version is taught in U.S. Patent No. 4,116,140 to Joseph Anderson et al. Many other examples are found in the patent literature.
A problem common with each of these prior art seed openers and press wheels is the linkage between the press wheel frames and the seed opener frames when the seed opener blade or blades encounter a hard object, such as a rock. When the opener blades) ride up and over the obstacle in typical seed drills, the press wheel frame is lifted up as well. This causes the press wheel to lose contact with the soil for the interval of time that the seed opener blade is elevated. This results in poor seed coverage and resultant poor seed germination in the area immediately behind the obstacle where seeds have already been dropped. Furthermore, down pressure on the seed opener frame is typically provided by a down pressure spring extending between the seed drill main frame and the opener frame. This results in extremely high loads on the opener blades as they trip up and over an obstacle due to the simultaneous upward pressure applied by the obstacle countered by the down pressure provided by the spring.
This causes rapid opener blade and bearing failure.
It is clear then, that an improved arrangement is needed between seed drill openers and attached press wheels. Preferably, the press wheel should be attached in such a manner as to keep the press wheel on the ground, with downward pressure applied thereto, even when the opener blades) encounter and ride up and over an obstacle.
Furthermore, such an improved arrangement should minimize opener blade and bearing stresses and loads when the opener blades) encounter such an obstacle.
Summary of the Invention The present invention is directed to a seed opener for use with a seed drill in which the seed opener has a trailing press wheel attached to a press wheel frame. The press wheel frame is pivotally attached to a seed opener frame, which, in turn, is pivotally attached to the seed drill main frame. The angle of attachment between the press wheel frame and the seed opener frame is adjustable to allow the press wheel to be used as a depth gauge for the opener blade or blades. Constant downward pressure is applied to the press wheel frame via a down pressure rod and spring extending between the press wheel frame and the drill frame. The use of down pressure on the press wheel frame allows the press wheel to maintain ground contact, with downward pressure, at all times, even when the opener . ~ CA 02299736 2000-02-29 blades) encounter an obstacle. In addition, by placing downward pressure on the press wheel frame instead of the opener frame, the load on the opener blades) is minimized even when they encounter, and ride up and over, a fixed obstacle such as a rock.
Objects and Advantages of the Invention The principal objects of the present invention include: providing a seed opener with improved press wheel attachment; providing such a seed opener in which a press wheel frame is pivotally attached to an opener frame such that the angle therebetween is adjustable; providing such a seed opener in which a down pressure rod and spring are attached between a seed drill main frame and the press wheel frame so that downward pressure is applied to the press wheel at all times; providing such a seed opener in which the constant downward pressure on the press wheel frame allows it to maintain contact with the ground, under downward pressure, for maximum seed covering and germination; providing such a seed opener in which impact load and resulting wear on opener blades) and bearings is minimized when the blades) contact a fixed obstacle; and providing such a seed opener which is strong and durable and which is particularly well adapted for .its intended purpose.
Other objects and advantages of this invention will become apparent from the following description taken in conjunction with the accompanying drawings wherein are set forth, by way of illustration and example, certain 5 embodiments of this invention.
The drawings constitute a part of this specification and include exemplary embodiments of the present invention and illustrate various objects and features thereof.
Brief Description of the Drawings Fig. 1 is a side elevational view of a first prior art seed drill frame, seed opener and press wheel and frame.
Fig. 2 is a side elevational view of a second prior art seed drill frame, seed opener and press wheel and f rame .
Fig. 3 is a side elevational view of a seed drill frame, seed opener and press wheel and frame in accordance with the present invention.
Fig. 4 is a side elevational view of the seed drill frame, seed opener and press wheel and frame of Fig. 3, illustrating the motion as a seed opener blade encounters a buried obstacle.
Furthermore, such an improved arrangement should minimize opener blade and bearing stresses and loads when the opener blades) encounter such an obstacle.
Summary of the Invention The present invention is directed to a seed opener for use with a seed drill in which the seed opener has a trailing press wheel attached to a press wheel frame. The press wheel frame is pivotally attached to a seed opener frame, which, in turn, is pivotally attached to the seed drill main frame. The angle of attachment between the press wheel frame and the seed opener frame is adjustable to allow the press wheel to be used as a depth gauge for the opener blade or blades. Constant downward pressure is applied to the press wheel frame via a down pressure rod and spring extending between the press wheel frame and the drill frame. The use of down pressure on the press wheel frame allows the press wheel to maintain ground contact, with downward pressure, at all times, even when the opener . ~ CA 02299736 2000-02-29 blades) encounter an obstacle. In addition, by placing downward pressure on the press wheel frame instead of the opener frame, the load on the opener blades) is minimized even when they encounter, and ride up and over, a fixed obstacle such as a rock.
Objects and Advantages of the Invention The principal objects of the present invention include: providing a seed opener with improved press wheel attachment; providing such a seed opener in which a press wheel frame is pivotally attached to an opener frame such that the angle therebetween is adjustable; providing such a seed opener in which a down pressure rod and spring are attached between a seed drill main frame and the press wheel frame so that downward pressure is applied to the press wheel at all times; providing such a seed opener in which the constant downward pressure on the press wheel frame allows it to maintain contact with the ground, under downward pressure, for maximum seed covering and germination; providing such a seed opener in which impact load and resulting wear on opener blades) and bearings is minimized when the blades) contact a fixed obstacle; and providing such a seed opener which is strong and durable and which is particularly well adapted for .its intended purpose.
Other objects and advantages of this invention will become apparent from the following description taken in conjunction with the accompanying drawings wherein are set forth, by way of illustration and example, certain 5 embodiments of this invention.
The drawings constitute a part of this specification and include exemplary embodiments of the present invention and illustrate various objects and features thereof.
Brief Description of the Drawings Fig. 1 is a side elevational view of a first prior art seed drill frame, seed opener and press wheel and frame.
Fig. 2 is a side elevational view of a second prior art seed drill frame, seed opener and press wheel and f rame .
Fig. 3 is a side elevational view of a seed drill frame, seed opener and press wheel and frame in accordance with the present invention.
Fig. 4 is a side elevational view of the seed drill frame, seed opener and press wheel and frame of Fig. 3, illustrating the motion as a seed opener blade encounters a buried obstacle.
Detailed Description of the Invention As required, detailed embodiments of the present invention are disclosed herein, however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure.
Referring to the drawings, and more particularly to Figs. 1 and 2, two different prior art seed openers and press wheels are illustrated, along with the actions of the components as the opener blade encounters an embedded rock 1.
Referring to Fig. 1, a seed drill frame 2 mounts a seed hopper 3 which meters seeds through a drop tube 4 to an outlet position 5 immediately behind the leading edge of an opener blade 11. The opener blade 11 is mounted on a seed opener frame 12 which is, in turn, pivotally attached to the seed drill frame 2 at a pivot point 13. A trailing press wheel 14 is attached to a press wheel frame 15, which is, in turn, attached to the opener frame 12 at a pivot point 21. The angle between the press wheel frame 15 and the opener frame 12 is adjustable via an adjustable link arm 22 to adjust the depth at which the opener blade runs.
A downward pressure rod 23 extends, at an upper end, through an extension bracket 24 of the drill frame 2 and is attached, at a lower end, to the opener frame 12, with a downward pressure spring 25 positioned surrounding the rod 23 to place constant downward pressure on the rod 23, and thus on the opener blade 11 and the press wheel 14.
When the opener blade 11 encounters the embedded rock 1, it is forced up and over the rock 1, forcing the downward pressure rod 23 upward through the bracket 24 against the action of the downward force spring 25 and lifting the press wheel 14 entirely off of the ground surface. This means that the seed furrow formed for several inches behind the rock 1 is not engaged by the press wheel 14, and thus poor seed covering and germination results. In addition, the loading forces on the opener blade 11 and its bearings are considerable since all upward motion against the downward pressure spring 25 translates directly through the opener blade 11.
Fig. 2 illustrates a different prior art seed opener, again in which a seed drill frame 31 mounts a seed hopper 32 which meters seeds through a drop tube 33 to an outlet position 34 immediately behind the leading edge of an opener blade 35. The opener blade 35 is mounted on a seed opener frame 36 which is, in turn, pivotally attached to the seed drill frame 31 at a pivot point 41. A trailing, castering press wheel 42 is attached to a press wheel frame 43, which is, in turn, attached to the opener frame 36 at a pivot point 44. The angle between the press wheel frame 43 and the opener frame 36 is adjustable via an adjustable cam 45 to adjust the depth at which the opener blade 35 runs.
A downward pressure rod 51 extends, at an upper end, through an extension bracket 52 of the drill frame 31 and is connected at a lower end to the pivot point 44, with a downward pressure spring 53 positioned surrounding the rod 51 below the bracket 52 to place constant downward pressure on the rod, and thus on the opener blade 35 and the press wheel 42.
In the Fig. 2 embodiment, when the opener blade 35 encounters the embedded rock 1, it is forced up and over the rock 1, forcing the downward pressure rod 51 upward through the bracket 52 against the action of the downward force spring 53. Due to the release action of the adjustment cam 45, and the pivoting connection between the press wheel frame 43 and the opener frame 36 at the point 44, the press wheel 42 is allowed to maintain contact with the ground surface. While this is an improvement over the Fig. 1 embodiment, there is virtually no downward pressure on the press wheel 42 at this point, so seed covering and germination still suffers in the area immediately ahead of the rock 1. In addition, the loading forces on the opener blade 35 and its bearings are still considerable since all upward motion against the downward pressure spring 53 translates directly through the opener blade 35.
Referring to Figs. 3 and 4, the inventive seed opener with improved press wheel attachment is illustrated. The inventive seed opener and press wheel is similar in many respects to the prior art embodiment of Fig. 2, and similarly includes a seed drill frame 61 which mounts a seed hopper 62 which meters seeds through a drop tube 63 to an outlet position 64 immediately behind the leading edge of an opener blade 65. The opener blade 65 is mounted on a seed opener frame 71 which is, in turn, pivotally attached to the seed drill frame 61 at a pivot point 72. A
trailing, castering press wheel 73 is attached to a press wheel frame 74, which is, in turn, attached to the opener frame 71 at a pivot point 75. The angle between the press wheel frame 74 and the opener frame 71 is adjustable via an adjustable cam 81 to adjust the depth at which the opener blade 65 runs.
The inventive embodiment differs from the prior art in the placement of a downward pressure rod 82 which extends, at an upper end, through an extension bracket 83 of the ~
drill frame 61 and is attached, at a lower end, directly to the press wheel frame 74, with a downward pressure spring 84 positioned surrounding the rod 82 below the bracket 83 to place constant downward pressure on the press wheel 5 frame 74, and thus the press wheel 73. Downward pressure on the opener frame 71 and the opener blade 65 is provided through the link~between the press wheel frame 74 and the opener frame 71.
As illustrated in Fig. 4, when the opener blade 65 10 encounters the embedded rock 1, it is forced up and over the rock 1, causing the adjustment cam 81 to release or trip momentarily and allowing the opener frame 71 to pivot upward relative to the press wheel frame 74. At the same time, constant downward pressure is still applied to the press wheel frame 74 by the downward pressure spring 84 forcing the downward pressure rod 82 downward against the press wheel frame 74. Thus, the press wheel 73 is in constant ground contact, with downward pressure applied thereto, which results in a furrow which is consistently covered and pressed, even up to and including the area immediately surrounding the rock 1. This results in improved seed coverage and germination due to the constant contact and pressure between the press wheel 73 and the ground. In addition, the life of the opener blade 65 and associated bearings is greatly improved since most of the ' CA 02299736 2000-02-29 impact load between the rock 1 and the opener blade 65 is immediately absorbed by the trip action of the adjustment cam 81. In other words, the opener blade 65 is not sandwiched between the downward pressure of the downward pressure spring 84 and rod 82 and the upward force generated by the encounter with the rock 1, as is the case in the prior art embodiments of Figs. 1 and 2.
While the invention has been illustrated as a single seed opener and press wheel, it should be apparent that the invention is typically used on larger seed drills which include multiple seed openers and associated press wheels.
The opener blade 65 has been described in the singular, but it should be clear that tandem opener blades are equally usable with the inventive press wheel attachment. The downward pressure rod 82 and spring 84 are just one mechanism for providing downward pressure directly to the press wheel frame 74. Other downward pressure mechanisms, e.g. hydraulic springs, shock absorbers, etc., could be used effectively as well. It is thus to be understood that while certain forms of the present invention have been illustrated and described herein, it is not to be limited to the specific forms or arrangement of parts described and shown.
Referring to the drawings, and more particularly to Figs. 1 and 2, two different prior art seed openers and press wheels are illustrated, along with the actions of the components as the opener blade encounters an embedded rock 1.
Referring to Fig. 1, a seed drill frame 2 mounts a seed hopper 3 which meters seeds through a drop tube 4 to an outlet position 5 immediately behind the leading edge of an opener blade 11. The opener blade 11 is mounted on a seed opener frame 12 which is, in turn, pivotally attached to the seed drill frame 2 at a pivot point 13. A trailing press wheel 14 is attached to a press wheel frame 15, which is, in turn, attached to the opener frame 12 at a pivot point 21. The angle between the press wheel frame 15 and the opener frame 12 is adjustable via an adjustable link arm 22 to adjust the depth at which the opener blade runs.
A downward pressure rod 23 extends, at an upper end, through an extension bracket 24 of the drill frame 2 and is attached, at a lower end, to the opener frame 12, with a downward pressure spring 25 positioned surrounding the rod 23 to place constant downward pressure on the rod 23, and thus on the opener blade 11 and the press wheel 14.
When the opener blade 11 encounters the embedded rock 1, it is forced up and over the rock 1, forcing the downward pressure rod 23 upward through the bracket 24 against the action of the downward force spring 25 and lifting the press wheel 14 entirely off of the ground surface. This means that the seed furrow formed for several inches behind the rock 1 is not engaged by the press wheel 14, and thus poor seed covering and germination results. In addition, the loading forces on the opener blade 11 and its bearings are considerable since all upward motion against the downward pressure spring 25 translates directly through the opener blade 11.
Fig. 2 illustrates a different prior art seed opener, again in which a seed drill frame 31 mounts a seed hopper 32 which meters seeds through a drop tube 33 to an outlet position 34 immediately behind the leading edge of an opener blade 35. The opener blade 35 is mounted on a seed opener frame 36 which is, in turn, pivotally attached to the seed drill frame 31 at a pivot point 41. A trailing, castering press wheel 42 is attached to a press wheel frame 43, which is, in turn, attached to the opener frame 36 at a pivot point 44. The angle between the press wheel frame 43 and the opener frame 36 is adjustable via an adjustable cam 45 to adjust the depth at which the opener blade 35 runs.
A downward pressure rod 51 extends, at an upper end, through an extension bracket 52 of the drill frame 31 and is connected at a lower end to the pivot point 44, with a downward pressure spring 53 positioned surrounding the rod 51 below the bracket 52 to place constant downward pressure on the rod, and thus on the opener blade 35 and the press wheel 42.
In the Fig. 2 embodiment, when the opener blade 35 encounters the embedded rock 1, it is forced up and over the rock 1, forcing the downward pressure rod 51 upward through the bracket 52 against the action of the downward force spring 53. Due to the release action of the adjustment cam 45, and the pivoting connection between the press wheel frame 43 and the opener frame 36 at the point 44, the press wheel 42 is allowed to maintain contact with the ground surface. While this is an improvement over the Fig. 1 embodiment, there is virtually no downward pressure on the press wheel 42 at this point, so seed covering and germination still suffers in the area immediately ahead of the rock 1. In addition, the loading forces on the opener blade 35 and its bearings are still considerable since all upward motion against the downward pressure spring 53 translates directly through the opener blade 35.
Referring to Figs. 3 and 4, the inventive seed opener with improved press wheel attachment is illustrated. The inventive seed opener and press wheel is similar in many respects to the prior art embodiment of Fig. 2, and similarly includes a seed drill frame 61 which mounts a seed hopper 62 which meters seeds through a drop tube 63 to an outlet position 64 immediately behind the leading edge of an opener blade 65. The opener blade 65 is mounted on a seed opener frame 71 which is, in turn, pivotally attached to the seed drill frame 61 at a pivot point 72. A
trailing, castering press wheel 73 is attached to a press wheel frame 74, which is, in turn, attached to the opener frame 71 at a pivot point 75. The angle between the press wheel frame 74 and the opener frame 71 is adjustable via an adjustable cam 81 to adjust the depth at which the opener blade 65 runs.
The inventive embodiment differs from the prior art in the placement of a downward pressure rod 82 which extends, at an upper end, through an extension bracket 83 of the ~
drill frame 61 and is attached, at a lower end, directly to the press wheel frame 74, with a downward pressure spring 84 positioned surrounding the rod 82 below the bracket 83 to place constant downward pressure on the press wheel 5 frame 74, and thus the press wheel 73. Downward pressure on the opener frame 71 and the opener blade 65 is provided through the link~between the press wheel frame 74 and the opener frame 71.
As illustrated in Fig. 4, when the opener blade 65 10 encounters the embedded rock 1, it is forced up and over the rock 1, causing the adjustment cam 81 to release or trip momentarily and allowing the opener frame 71 to pivot upward relative to the press wheel frame 74. At the same time, constant downward pressure is still applied to the press wheel frame 74 by the downward pressure spring 84 forcing the downward pressure rod 82 downward against the press wheel frame 74. Thus, the press wheel 73 is in constant ground contact, with downward pressure applied thereto, which results in a furrow which is consistently covered and pressed, even up to and including the area immediately surrounding the rock 1. This results in improved seed coverage and germination due to the constant contact and pressure between the press wheel 73 and the ground. In addition, the life of the opener blade 65 and associated bearings is greatly improved since most of the ' CA 02299736 2000-02-29 impact load between the rock 1 and the opener blade 65 is immediately absorbed by the trip action of the adjustment cam 81. In other words, the opener blade 65 is not sandwiched between the downward pressure of the downward pressure spring 84 and rod 82 and the upward force generated by the encounter with the rock 1, as is the case in the prior art embodiments of Figs. 1 and 2.
While the invention has been illustrated as a single seed opener and press wheel, it should be apparent that the invention is typically used on larger seed drills which include multiple seed openers and associated press wheels.
The opener blade 65 has been described in the singular, but it should be clear that tandem opener blades are equally usable with the inventive press wheel attachment. The downward pressure rod 82 and spring 84 are just one mechanism for providing downward pressure directly to the press wheel frame 74. Other downward pressure mechanisms, e.g. hydraulic springs, shock absorbers, etc., could be used effectively as well. It is thus to be understood that while certain forms of the present invention have been illustrated and described herein, it is not to be limited to the specific forms or arrangement of parts described and shown.
Claims (5)
1) In a seed drill in which seeds are metered from a seed hopper mounted on a seed drill frame to an outlet immediately behind a seed opener blade mounted on a seed opener frame, the seed opener frame being pivotally connected to a press wheel frame with an adjustable angle there between to allow depth adjustment of the seed opener blade via a press wheel attached to the press wheel frame, the improvement comprising a downward pressure mechanism extending between said seed drill frame and said press wheel frame such that downward pressure is placed directly on said press wheel frame.
2) The improvement as in claim 1, wherein said downward pressure mechanism includes:
a) a bracket attached to and extending outward from said drill frame;
b) a downward pressure rod attached proximate one end to said press wheel frame, an opposite end of said downward pressure rod extending through said bracket; and c) a downward pressure spring positioned surrounding said downward pressure rod below said bracket, said spring exerting downward pressure on said rod, and thus on said press wheel frame.
a) a bracket attached to and extending outward from said drill frame;
b) a downward pressure rod attached proximate one end to said press wheel frame, an opposite end of said downward pressure rod extending through said bracket; and c) a downward pressure spring positioned surrounding said downward pressure rod below said bracket, said spring exerting downward pressure on said rod, and thus on said press wheel frame.
3) The improvement as in claim 1, wherein said press wheel frame and said seed opener frame are angle adjusted via an adjustment cam which trips responsive to upward pressure on the seed opener frame to allow the press wheel frame and the seed opener frame to pivot with respect to each other.
4) A method of placing downward pressure on a press wheel in a seed drill while allowing a seed opener blade to move upward in response to encountering an obstacle, the seed drill including a frame, the seed opener blade being attached to a seed opener frame and the press wheel being attached to a press wheel frame, the press wheel frame being attached to the seed opener frame via an angle adjustment mechanism, the method including the steps of:
a) positioning a downward pressure mechanism between the seed drill frame and the press wheel frame;
and b) allowing said angle adjustment mechanism to trip responsive to upward pressure on the seed drill frame such that the press wheel frame and the seed opener frame are allowed to pivot with respect to each other.
a) positioning a downward pressure mechanism between the seed drill frame and the press wheel frame;
and b) allowing said angle adjustment mechanism to trip responsive to upward pressure on the seed drill frame such that the press wheel frame and the seed opener frame are allowed to pivot with respect to each other.
5) A method as in claim 4, wherein said positioning step comprises the steps of:
a) attaching a bracket said drill frame such that it extends outward therefrom;
b) attaching one end of a downward pressure rod to said press wheel frame and extending an opposite end of said downward pressure rod through said bracket; and c) positioning a downward pressure spring surrounding said downward pressure rod below said bracket, such that said spring exerts downward pressure on said rod, and thus on said press wheel frame.
a) attaching a bracket said drill frame such that it extends outward therefrom;
b) attaching one end of a downward pressure rod to said press wheel frame and extending an opposite end of said downward pressure rod through said bracket; and c) positioning a downward pressure spring surrounding said downward pressure rod below said bracket, such that said spring exerts downward pressure on said rod, and thus on said press wheel frame.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33514399A | 1999-06-17 | 1999-06-17 | |
| US09/335,143 | 1999-06-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2299736A1 true CA2299736A1 (en) | 2000-12-17 |
Family
ID=31888035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2299736 Abandoned CA2299736A1 (en) | 1999-06-17 | 2000-02-29 | Seed opener with improved press wheel attachment |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2299736A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110958835A (en) * | 2017-06-06 | 2020-04-03 | 马斯奇奥盖斯帕多股份有限公司 | Pressure wheel |
-
2000
- 2000-02-29 CA CA 2299736 patent/CA2299736A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110958835A (en) * | 2017-06-06 | 2020-04-03 | 马斯奇奥盖斯帕多股份有限公司 | Pressure wheel |
| CN110958835B (en) * | 2017-06-06 | 2023-10-24 | 马斯奇奥盖斯帕多股份有限公司 | Seed pressing wheel |
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| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |