CA1121218A - Seed drill with disc shares - Google Patents
Seed drill with disc sharesInfo
- Publication number
- CA1121218A CA1121218A CA000355574A CA355574A CA1121218A CA 1121218 A CA1121218 A CA 1121218A CA 000355574 A CA000355574 A CA 000355574A CA 355574 A CA355574 A CA 355574A CA 1121218 A CA1121218 A CA 1121218A
- Authority
- CA
- Canada
- Prior art keywords
- share
- seed drill
- discs
- attack
- drill according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C5/00—Making or covering furrows or holes for sowing, planting or manuring
- A01C5/06—Machines for making or covering drills or furrows for sowing or planting
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Working Implements (AREA)
- Sowing (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A seed drill with disc shares arranged alternately and, in the direction of travel, in staggered relationship with each other, in two transverse rows one behind the other, and adapted to pivot in a vertical plane by means of holders, the seed drill having individual share discs each forming an acute angle of attack with the direction of travel, character-ized in that the individual share discs are about 400 mm in outside diameter and at least 4 mm in thickness, and in that the magnitude of the angle of attack for the individual share discs is about 7 to 9°.
A seed drill with disc shares arranged alternately and, in the direction of travel, in staggered relationship with each other, in two transverse rows one behind the other, and adapted to pivot in a vertical plane by means of holders, the seed drill having individual share discs each forming an acute angle of attack with the direction of travel, character-ized in that the individual share discs are about 400 mm in outside diameter and at least 4 mm in thickness, and in that the magnitude of the angle of attack for the individual share discs is about 7 to 9°.
Description
The invention relates to a seed drill with disc shares arranged alternately and, as seen in the direction of travel, staggered in relation to each other, in two transverse rows arranged one behind the other, and adapted to pivot in a vertical plane with the aid of holders, the said seed drill having individual share discs each forming an acute angle of attack with the said direction of travel.
A seed drill of this kind is already known from German OS 19366~35. In this machine the individual share discs are arranged rotatably, in pairs, on holders and run at alter-nate angles of attack of between ~ and 6 to the direction of travel. They are also set at an angle of inclination of between l and 3, running towards the angle of attack, in relation to a plane running through their lower edges in the direction of travel. Furthermore, a pressure roller is provided on each holder behind the share discs. These pressure rollers are not set at an angle to the direction of travel, nor to a vertical plane running in that direction.
As may easily be gathered from the drawings attached ;
to the said OS, the said share discs are very thin and have an outside diameter of about 300 mm, whereas the outside diameter of the pressure rollers is about 2/3 larger. Finally, the pressure rollers which are relatively narrow, run exactly cen-trally of the slots or furrows produced in the ground by the -share discs.
As regards use for direct sowing, in which the seed is to be sown in ground untouched since the previous harvest, this known seed drill has the disadvantage that a substantial number of the seeds fed to the share discs cannot fall into the narrow furrows produced thereby and are thus left uncovered on the surface of the ground. The larger the amount of unrotted vegetation remaining on the ground since the previous harvest, and this includes chemically killed weeds and base vegetation, the more apparent this disadvantage. If this vegetation is pressed into the soil by -the share discs, not only is the width of the furrows still further reduced, but the seeds reaching the furrows fall upon this vegetation and are thus deprived of the soil cover needed for their growth. In addition to this, the angle of inclination of the share discs presses the said vegetation against the walls of the furrow produced in the soil, which prevents them from being properly closed by the pressure rollers, all the more so because each pressure roller has a central rib around its periphery arranged cen-trally over the furrow.
In addition to this, and because of the small outside diameter of the share discs, there is a danger of the vegeta-tion accumulating in front of the discs, thus making it necessary to interrupt the operation of the machine at frequent intervals in order to remove these accumulations and allow the share discs to operate properly. Another disadvantage is that the share discs, because they are so thin, are subject to relatively rapid wear, especially in the case of heavy soil containing minerals, and this means frequent replacement of the discs.
However, in this known seed drill replacements are difficult because the share discs, with their bearings, must be removed from the axle bolts in the holders.
It is therefore an object of the present inven~ion to improve this known seed drill, to ensure that the machine per-forms satisfactorily, especially when used for direct sowing, over long periods of use.
According to the invention, this purpose is achieved in that the individual share discs have an outside diameter of about 400 mm and a thickness of at least 4mm, and in that the angle of attack of individual share discs is about 7 to 9.
Even with heavy soils with large amounts of vegetation, thls arran~ement produces quite broad furrows into which the seeds fed to the share discs can safely fall. Since, as these furrows are formed, the soil is pushed aside without being simultaneously compressed by the share discs, the vegetation lying upon the ground which, because of its toughness, cannot be cut, is pulled apart in such a manner as to allow the seeds to fall therethrough onto the soil at the bottom of the furrows, and thus to be provided with the soil cover necessary to their growth.
The dimensions of the share discs according to the invention ensure satisfactory operation of the seed drill since, on the one hand, the large diameter of the share discs prevents the accumulation of vegetation in front of them and, on the other hand, they are sufficiently thick to make replace-ments for wear necessary only at long intervals, even when the machine is used in heavy soil containing minerals, and such replacements may thus be carried out when the machine is not needed.
Replacement of the share discs is furthermore sub-stantially facilitated by the fact that each share disc issecured detachably, on one side only, by means of countersunk bolts, to a hub, the sald hub being mounted rotatably on the holder and being also removable from one side. This makes it possible to remove each share disc per se, i.e. i~ can be re-moved easily from the holder without the hub or the bearing and a new disc can then be fitted. Removal of the hub with or without the disc is also simple and easy.
Replacement is further facilitated ln that the countersunk bolts are in the form of socket head bolts. This is particularly necessary if a poorly soluble metal adhesive is used to screw the bolts into the hubs. On the other hand, this type of attachment ensures particularly secure seating of ' ~:
the share discs on the hubs and -thus in the holders.
In one preferred example of embodiment of the seed drill, in which a pressure roller is located on the holder behind each share disc, according to the invention the pressure rollers are also arranged alternately in two transverse rows arranged one behind the other, and form an acute angle of attack to the direction of travel, the said angle of attack running in a direction opposite to that of the angle of attack of the share discs. Moreover, the said pressure rollers are about 400 mm in diameter and about 100 mm in width. This also provides large spaces between individual pressure rollers, which do not become plugged even with large amount of vegeta-tion. Furthermore, the lateral forces applied by the soil to the disc shares are equalized for each holder. The closing and compressing operations of the rollers is also substantially improved, since earth pushed aside by the share discs, while the furrows are made, is moved by the said rollers back into the furrows, after the seeds have been deposited, and is pressed down again. This ensures continuous covering of the seeds with soil, with no gaps, thus providing the soil cover required for rapid growth.
This covering and compressing work may be still further improved by arranging for the pressure rollers to be set, towards their angle of attack, at an acute angle of in-clina-tion to a vertical plane running parallel with the direc-tion of travel. It has been found advantageous for the angle of attack and the angle of inclination to amount to about 10.
If the pressure rollers are mounted rotatably upon the holders and can be removed from one side, this improves the reliability of the machine over long periods of service, since the replacement of a defective pressure roller is substantially simplified and accelerated. To this end, it is desirable for the pressure rollers to be removable from the same side of the holders as the share discs.
Furthermore, the present invention provides for each pressure roller to roll upon the ridge of earth thrown up by the share discs in front. This improves the ability of the said rollers to return the earth to the furrows.
Finally, and according to the invention, the distance between the transverse rows of share discs and of pressure rollers, as seen in the direction of travel, is larger than the distance from the front edge of the share disc and the rear edge of the pressure roller on the same holder. In this way, the free passage between the share discs and pressure rollers in the front transverse row is at no time affected by the share discs and pressure rollers in the rear transverse row.
This allows large quantities of vegetation to pass the said discs and rollers without accumulating in front of or between them. The arrangement also improves the accessibility to the said discs and rollers, and substantially facilitates, the replacement thereof.
In one aspect of the present invention, there is provided a seed drill with disc shares arranged alternately and, as seen in the direction of travel, in staggered relation-ship with each other, in two transverse rows one behind the other, and adapted to pivot in a vertical plane by means of holders, the said seed drill having individual share discs each forming an acute angle of attack with the said direction of travel, characterized in that the individual share discs are about 400 mm in outside diameter and at least 4 mm in thickness, and in that the magnitude of the angle of attack for the indi-vidual share discs is about 7 to 9.
The invention is explained hereinafter in greater detail, in conjunction with the drawings attached hereto.
, '`~ ~ :
The invention is illustrated by way of example in the accompany-ing drawings wherein:-Figure 1 is a plan view of a plurality of share discsand pressure rollers arranged on the seed drill according to the invention in two transverse rows one behind the other, Eigure 2 is a rear view, to an enlarged scale, show-ing the position of a pressure roller in relation to the share disc in front of it, and Figure 3 is a plan view, also to an enlarged scale, of a share disc and the pressure roller associated therewith.
The seed drill according to the invention comprises a frame 1 equipped with two transverse elements 2,3 arranged at a distance A one behind the other. Arranged alternately upon the said transverse elements, with the aid of holders 4, is a plurality of share discs each consisting of a disc share 5, in transverse rows 7,8 and staggered in relation to each other, and adapted to pivot in a vertical plane. Since holders 4 are all of the same design, the distance between transverse rows 7,8, as seen in the direction of travel 6, is the same as that between transverse elements 2,3. Moreover, as regards the alternating and staggered arrangement, the lateral distance between adjacent share discs corresponds exactly to the width R between the furrows in which the seeds are to be placed.
Each share disc 5 forms an acute angle of attack of 8 to a straight line 9 running parallel with the direction of travel 6, the angle of attack of the share discs in rear transverse row 8 being exactly equal to anyle of attack ~ of the discs in front of transverse row 7, but running in the opposite direction. Mounted rotatably upon holders 4, behind share discs 5, are pressure rollers 10, forming an angle of attack of 10 to a straight line 9 running parallel with the direction of travel, and arranged alternately on transverse rows 11,12.
....... .
As seen in the direction of -travel, these transverse rows are at the same distance A from each other as transverse rows 7,8 of share discs 5. This distance A is substantially greater than distance L between front edge 13 of a share disc 5 and rear edge 14 of pressure roller 10 arranged upon the same holder 4.
As shown in Figure 2, pressure rollers 10 also form an angle of inclination ~ of 10 with a vertical plane running parallel with direction of travel 6, through a line 15, the said angle of inclination running in the same direction as angle of attack ~. Thus each pressure roller 10 runs over the ridge of soil 17 thrown up by share discs 5, in front of the said roller, while the furrow is being made, pressing the said soil back into the said furrows 16.
As shown clearly in Figure 3, each share disc 5 has an outside diameter D of 400 mm and a thickness d of 4 mm.
Furthermore, each share disc 5 is removable from one side, being secured to hub 19 by means of four socket head counter-sunk bolts lg. The said hub may also be removed from one side of holder 4, upon which it rotates freely on a double roller bearing 20, being secured against axial displacement by means of a circlip 21. Share discs 5 are still further secured by using a poorly soluble metal adhesive when the countersunk bolts are screwed into hub 19.
Pressure rollers 10 have a width b of 100 mm and the same outside diameter D of 400 mm. They are also mounted upon holders 4 and are removable from the same side as the share discs. Bearing bolt 22 is secured against axial displacement by folding cotter pin 23.
:
A seed drill of this kind is already known from German OS 19366~35. In this machine the individual share discs are arranged rotatably, in pairs, on holders and run at alter-nate angles of attack of between ~ and 6 to the direction of travel. They are also set at an angle of inclination of between l and 3, running towards the angle of attack, in relation to a plane running through their lower edges in the direction of travel. Furthermore, a pressure roller is provided on each holder behind the share discs. These pressure rollers are not set at an angle to the direction of travel, nor to a vertical plane running in that direction.
As may easily be gathered from the drawings attached ;
to the said OS, the said share discs are very thin and have an outside diameter of about 300 mm, whereas the outside diameter of the pressure rollers is about 2/3 larger. Finally, the pressure rollers which are relatively narrow, run exactly cen-trally of the slots or furrows produced in the ground by the -share discs.
As regards use for direct sowing, in which the seed is to be sown in ground untouched since the previous harvest, this known seed drill has the disadvantage that a substantial number of the seeds fed to the share discs cannot fall into the narrow furrows produced thereby and are thus left uncovered on the surface of the ground. The larger the amount of unrotted vegetation remaining on the ground since the previous harvest, and this includes chemically killed weeds and base vegetation, the more apparent this disadvantage. If this vegetation is pressed into the soil by -the share discs, not only is the width of the furrows still further reduced, but the seeds reaching the furrows fall upon this vegetation and are thus deprived of the soil cover needed for their growth. In addition to this, the angle of inclination of the share discs presses the said vegetation against the walls of the furrow produced in the soil, which prevents them from being properly closed by the pressure rollers, all the more so because each pressure roller has a central rib around its periphery arranged cen-trally over the furrow.
In addition to this, and because of the small outside diameter of the share discs, there is a danger of the vegeta-tion accumulating in front of the discs, thus making it necessary to interrupt the operation of the machine at frequent intervals in order to remove these accumulations and allow the share discs to operate properly. Another disadvantage is that the share discs, because they are so thin, are subject to relatively rapid wear, especially in the case of heavy soil containing minerals, and this means frequent replacement of the discs.
However, in this known seed drill replacements are difficult because the share discs, with their bearings, must be removed from the axle bolts in the holders.
It is therefore an object of the present inven~ion to improve this known seed drill, to ensure that the machine per-forms satisfactorily, especially when used for direct sowing, over long periods of use.
According to the invention, this purpose is achieved in that the individual share discs have an outside diameter of about 400 mm and a thickness of at least 4mm, and in that the angle of attack of individual share discs is about 7 to 9.
Even with heavy soils with large amounts of vegetation, thls arran~ement produces quite broad furrows into which the seeds fed to the share discs can safely fall. Since, as these furrows are formed, the soil is pushed aside without being simultaneously compressed by the share discs, the vegetation lying upon the ground which, because of its toughness, cannot be cut, is pulled apart in such a manner as to allow the seeds to fall therethrough onto the soil at the bottom of the furrows, and thus to be provided with the soil cover necessary to their growth.
The dimensions of the share discs according to the invention ensure satisfactory operation of the seed drill since, on the one hand, the large diameter of the share discs prevents the accumulation of vegetation in front of them and, on the other hand, they are sufficiently thick to make replace-ments for wear necessary only at long intervals, even when the machine is used in heavy soil containing minerals, and such replacements may thus be carried out when the machine is not needed.
Replacement of the share discs is furthermore sub-stantially facilitated by the fact that each share disc issecured detachably, on one side only, by means of countersunk bolts, to a hub, the sald hub being mounted rotatably on the holder and being also removable from one side. This makes it possible to remove each share disc per se, i.e. i~ can be re-moved easily from the holder without the hub or the bearing and a new disc can then be fitted. Removal of the hub with or without the disc is also simple and easy.
Replacement is further facilitated ln that the countersunk bolts are in the form of socket head bolts. This is particularly necessary if a poorly soluble metal adhesive is used to screw the bolts into the hubs. On the other hand, this type of attachment ensures particularly secure seating of ' ~:
the share discs on the hubs and -thus in the holders.
In one preferred example of embodiment of the seed drill, in which a pressure roller is located on the holder behind each share disc, according to the invention the pressure rollers are also arranged alternately in two transverse rows arranged one behind the other, and form an acute angle of attack to the direction of travel, the said angle of attack running in a direction opposite to that of the angle of attack of the share discs. Moreover, the said pressure rollers are about 400 mm in diameter and about 100 mm in width. This also provides large spaces between individual pressure rollers, which do not become plugged even with large amount of vegeta-tion. Furthermore, the lateral forces applied by the soil to the disc shares are equalized for each holder. The closing and compressing operations of the rollers is also substantially improved, since earth pushed aside by the share discs, while the furrows are made, is moved by the said rollers back into the furrows, after the seeds have been deposited, and is pressed down again. This ensures continuous covering of the seeds with soil, with no gaps, thus providing the soil cover required for rapid growth.
This covering and compressing work may be still further improved by arranging for the pressure rollers to be set, towards their angle of attack, at an acute angle of in-clina-tion to a vertical plane running parallel with the direc-tion of travel. It has been found advantageous for the angle of attack and the angle of inclination to amount to about 10.
If the pressure rollers are mounted rotatably upon the holders and can be removed from one side, this improves the reliability of the machine over long periods of service, since the replacement of a defective pressure roller is substantially simplified and accelerated. To this end, it is desirable for the pressure rollers to be removable from the same side of the holders as the share discs.
Furthermore, the present invention provides for each pressure roller to roll upon the ridge of earth thrown up by the share discs in front. This improves the ability of the said rollers to return the earth to the furrows.
Finally, and according to the invention, the distance between the transverse rows of share discs and of pressure rollers, as seen in the direction of travel, is larger than the distance from the front edge of the share disc and the rear edge of the pressure roller on the same holder. In this way, the free passage between the share discs and pressure rollers in the front transverse row is at no time affected by the share discs and pressure rollers in the rear transverse row.
This allows large quantities of vegetation to pass the said discs and rollers without accumulating in front of or between them. The arrangement also improves the accessibility to the said discs and rollers, and substantially facilitates, the replacement thereof.
In one aspect of the present invention, there is provided a seed drill with disc shares arranged alternately and, as seen in the direction of travel, in staggered relation-ship with each other, in two transverse rows one behind the other, and adapted to pivot in a vertical plane by means of holders, the said seed drill having individual share discs each forming an acute angle of attack with the said direction of travel, characterized in that the individual share discs are about 400 mm in outside diameter and at least 4 mm in thickness, and in that the magnitude of the angle of attack for the indi-vidual share discs is about 7 to 9.
The invention is explained hereinafter in greater detail, in conjunction with the drawings attached hereto.
, '`~ ~ :
The invention is illustrated by way of example in the accompany-ing drawings wherein:-Figure 1 is a plan view of a plurality of share discsand pressure rollers arranged on the seed drill according to the invention in two transverse rows one behind the other, Eigure 2 is a rear view, to an enlarged scale, show-ing the position of a pressure roller in relation to the share disc in front of it, and Figure 3 is a plan view, also to an enlarged scale, of a share disc and the pressure roller associated therewith.
The seed drill according to the invention comprises a frame 1 equipped with two transverse elements 2,3 arranged at a distance A one behind the other. Arranged alternately upon the said transverse elements, with the aid of holders 4, is a plurality of share discs each consisting of a disc share 5, in transverse rows 7,8 and staggered in relation to each other, and adapted to pivot in a vertical plane. Since holders 4 are all of the same design, the distance between transverse rows 7,8, as seen in the direction of travel 6, is the same as that between transverse elements 2,3. Moreover, as regards the alternating and staggered arrangement, the lateral distance between adjacent share discs corresponds exactly to the width R between the furrows in which the seeds are to be placed.
Each share disc 5 forms an acute angle of attack of 8 to a straight line 9 running parallel with the direction of travel 6, the angle of attack of the share discs in rear transverse row 8 being exactly equal to anyle of attack ~ of the discs in front of transverse row 7, but running in the opposite direction. Mounted rotatably upon holders 4, behind share discs 5, are pressure rollers 10, forming an angle of attack of 10 to a straight line 9 running parallel with the direction of travel, and arranged alternately on transverse rows 11,12.
....... .
As seen in the direction of -travel, these transverse rows are at the same distance A from each other as transverse rows 7,8 of share discs 5. This distance A is substantially greater than distance L between front edge 13 of a share disc 5 and rear edge 14 of pressure roller 10 arranged upon the same holder 4.
As shown in Figure 2, pressure rollers 10 also form an angle of inclination ~ of 10 with a vertical plane running parallel with direction of travel 6, through a line 15, the said angle of inclination running in the same direction as angle of attack ~. Thus each pressure roller 10 runs over the ridge of soil 17 thrown up by share discs 5, in front of the said roller, while the furrow is being made, pressing the said soil back into the said furrows 16.
As shown clearly in Figure 3, each share disc 5 has an outside diameter D of 400 mm and a thickness d of 4 mm.
Furthermore, each share disc 5 is removable from one side, being secured to hub 19 by means of four socket head counter-sunk bolts lg. The said hub may also be removed from one side of holder 4, upon which it rotates freely on a double roller bearing 20, being secured against axial displacement by means of a circlip 21. Share discs 5 are still further secured by using a poorly soluble metal adhesive when the countersunk bolts are screwed into hub 19.
Pressure rollers 10 have a width b of 100 mm and the same outside diameter D of 400 mm. They are also mounted upon holders 4 and are removable from the same side as the share discs. Bearing bolt 22 is secured against axial displacement by folding cotter pin 23.
:
Claims (11)
1. A seed drill with disc shares arranged alternately and, as seen in the direction of travel, in staggered relation-ship with each other, in two transverse rows one behind the other, and adapted to pivot in a vertical plane by means of holders, the said seed drill having individual share discs each forming an acute angle of attack with the said direction of travel, characterized in that the individual share discs are about 400 mm in outside diameter (D) and at least 4 mm in thickness (d), and in that the magnitude of the angle of attack (.alpha.) for the individual share discs is about 7 to 9°.
2. A seed drill according to claim 1, characterized in that the share discs are each secured to a hub by means of countersunk bolts and are removable from one side, the said hubs being mounted rotatably upon the holders and being also removable from one side.
3. A seed drill according to claim 2, characterized in that the countersunk bolts are in the form of socket headed bolts.
4. A seed drill according to claims 2 or 3, character-ized in that the countersunk bolts are screwed into the hubs with a poorly soluble metal adhesive.
5. A seed drill according to claim 1 in which a pressure roller is located behind each share disc on each share disc holder, characterized in that the pressure rollers are also arranged alternately in two transverse rows and form, in relation to the direction of travel, an acute angle of attack (.beta.) running in a direction opposite to that of the angle of attack (.alpha.) of the share discs; and in that the said pressure rollers have an outside diameter (D) of about 400 mm and a width (B) of about 100 mm.
6. A seed drill according to claim 5, characterized in that the pressure rollers form, in the direction of their angle of attack (.beta.), an acute angle of inclination (?) with a vertical plane running parallel with the direction of travel.
7. A seed drill according to claims 5 or 6, character-ized in that the angle of attack (.beta.), and the angle of inclina-tion (?), of the pressure rollers each amount to about 10°.
8. A seed drill according to claim 5 characterized in that the pressure rollers are mounted rotatably on the share disc holders and are removable from one side thereof.
9. A seed drill according to claim 8, characterized in that the pressure rollers, mounted upon the holders are removable from the same side as the share discs.
10. A seed drill according to one of claims 5 or 6, characterized in that each pressure roller is arranged to roll upon a ridge of soil thrown up by the share disc in front of it.
11. A seed drill according to claims 1, 2 or 3, characterized in that, as seen in the direction of travel, the distance (A) between the transverse rows of share discs and pressure rollers is greater than the distance (L) be-tween the front edge of a share disc and the rear edge of the pressure roller located upon the same holder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2930713.9 | 1979-07-28 | ||
| DE19792930713 DE2930713C2 (en) | 1979-07-28 | 1979-07-28 | Seed drill with disc coulters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1121218A true CA1121218A (en) | 1982-04-06 |
Family
ID=6077047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000355574A Expired CA1121218A (en) | 1979-07-28 | 1980-07-07 | Seed drill with disc shares |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA1121218A (en) |
| DE (1) | DE2930713C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6216616B1 (en) | 1999-06-07 | 2001-04-17 | Bourgault Industries Ltd. | Mid row banding coulter drill |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1218785A (en) * | 1968-07-20 | 1971-01-13 | Samuel Moore | Improved method and means for agricultural seeding |
-
1979
- 1979-07-28 DE DE19792930713 patent/DE2930713C2/en not_active Expired
-
1980
- 1980-07-07 CA CA000355574A patent/CA1121218A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6216616B1 (en) | 1999-06-07 | 2001-04-17 | Bourgault Industries Ltd. | Mid row banding coulter drill |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2930713A1 (en) | 1981-02-19 |
| DE2930713C2 (en) | 1982-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5517932A (en) | Scalloped closing wheel for a seeding machine | |
| EP2207410B1 (en) | Agricultural seeder implement | |
| EP0501836B1 (en) | Seed sowing apparatus | |
| US3701327A (en) | Planter and method of preparing soil | |
| US4542705A (en) | Apparatus for renewing green areas and lawns | |
| US5787994A (en) | Narrow profile soil opening device for agriculture material placement | |
| HUE033852T2 (en) | Seed meter | |
| CA2678241A1 (en) | Seed boot for double-shoot disc opener | |
| CA2194731A1 (en) | Seed drill with scraper/soil firming attachment | |
| US5628372A (en) | Land management apparatus for creating irrigation pools | |
| DE4237093A1 (en) | Direct sowing machine with zero and/or min. tillage - has share drills as elements insertable releasably and exchangeably into holders and are designed to form sowing furrow | |
| EP0135724A1 (en) | Multirow-harvester, especially for maize | |
| CA1121218A (en) | Seed drill with disc shares | |
| US5461994A (en) | Seed drill planting assembly | |
| US3923206A (en) | Seed separator with adjustment for different seed sizes | |
| US5060585A (en) | Agricultural seed planter | |
| US4411206A (en) | Precision sower | |
| EP0358947B1 (en) | Seed drill coulter cooperating with a roller | |
| US5370070A (en) | Narrow profile soil opening device for agricultural material placement | |
| US5351634A (en) | Grass planter | |
| DE2951430C2 (en) | Seed distribution device in a row seeder with a perforated seed roller | |
| US11375657B2 (en) | Furrow cutting and press wheel assembly with adjacent seeding unit | |
| EP0327869B2 (en) | Cultivating and sowing combination | |
| US10051772B2 (en) | Debris clearing device having teeth with sharpened leading edges | |
| GB2064491A (en) | Dispensing seeds or fertiliser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |