CA1121216A - Seed drill with single disc shares - Google Patents
Seed drill with single disc sharesInfo
- Publication number
- CA1121216A CA1121216A CA000355359A CA355359A CA1121216A CA 1121216 A CA1121216 A CA 1121216A CA 000355359 A CA000355359 A CA 000355359A CA 355359 A CA355359 A CA 355359A CA 1121216 A CA1121216 A CA 1121216A
- Authority
- CA
- Canada
- Prior art keywords
- holders
- shares
- bearings
- single disc
- seed drill
- 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
- A01C7/00—Sowing
- A01C7/20—Parts of seeders for conducting and depositing seed
- A01C7/201—Mounting of the seeding tools
-
- 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)
- Sowing (AREA)
- Soil Working Implements (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A seed drill with single disc shares, arranged alternately, and spaced laterally from each other, in at least two transverse rows, upon an equal number of transverse carriers located, with similar spacing, one behind the other, the shares being adapted to pivot in a vertical plane with the aid of holders, and being set at an acute angle to the direction of travel, characterized in that wide bearings are provided for mounting the single disc shares upon the holders and for mount-ing the holders upon the transverse carriers the shares being mounted, easily detachably, upon one side of the holders, and the holders being secured to the bearing brackets arranged upon the transverse carriers.
A seed drill with single disc shares, arranged alternately, and spaced laterally from each other, in at least two transverse rows, upon an equal number of transverse carriers located, with similar spacing, one behind the other, the shares being adapted to pivot in a vertical plane with the aid of holders, and being set at an acute angle to the direction of travel, characterized in that wide bearings are provided for mounting the single disc shares upon the holders and for mount-ing the holders upon the transverse carriers the shares being mounted, easily detachably, upon one side of the holders, and the holders being secured to the bearing brackets arranged upon the transverse carriers.
Description
21~
The present invention relates to a seed-drill with single-disc shares, arranged alternately, and spaced laterally from each other, in at least two -transverse rows lying one behind the other, upon an equal number of transverse carriers located with similar spacing one behind the other, the said shares being adapted to pivot in a vertical plane with the aid of holders, and being set at an acute angle to the direction of travel.
A seed-drill of this kind is described in U.S.
Patent 3,705,560. In this machine, the holders of ~he single-disc shares have at least two hinged arms arranged one above the other and at least approximately parallel with each other.
The advantages of this machine is that, even in weed-ridden fields, the seed can be sown in relatively closely~
spaced rows, since the distances between individual single-disc shares on one transverse carrier are so great that it is impossible for jamming to occur, even with large amounts of vegetation. Moreover, the same holders are used for all of the shares. The parallelogram design of the holders also promotes satisfactory sowin~, since the angle of incidence of the shares is independent of the depth of penetration.
One of the disadvantages of this machine is that ~-the bearings upon which the shares rotate upon the holders are narrow, wear rapidly, and need frequent replacement during the life of the machine. The replacement is labour and time-consuming, since the bearings are retained at both ends by parts of the holders. Furthermore, if bearing defec-ts develop while the machine is in use, undesirable interruption of the sowing operation arises.
This disadvantage is particularly serious if the machine is being used for direct-seeding, i.e. in fields which have not been prepared for seeding, since the previous harvest, --1-- ,, . ~ . . "
, in the conventional manner, by means of soil-cultivating equipment. The ground in such fields is hard and considerable lateral ~orces ~herefore act upon the shares, set at an angle to the direction of travel, and therefore upon the bearings thereof. Even with a small amount of wear in the bearings, the shares can no longer produce furrows of the necessary width for seeding. Instead, they form narrow channels into which the seeds do not fall and are therefore left lying on the ground uncovered. This is aggravated by the fact that this fault is apt to go unobserved for some time, resulting in a considerable reduction in yield.
The narrow bearings carrying the holders on the trans-verse carriers have the same disadvantages. Moreover, the effect of wear in these bearings is such that guidance of the shares in the ground is affected by varying lateral pressures acting upon them, and the seed-furrows can no longer be kept straight.
Now it is the purpose of the present invention to improve the arrangement of the single-disc shares and their holders upon the transverse carriers, in such a manner that the seed-drill will sow satisfactorily over long periods, even when used for direct seeding.
According to the invention, this purpose is achieved in that wide bearings are provided for mounting the single-disc shares upon the holders, and for mounting the said holders upon the transverse carriers, the said shares being mounted, easily detachably, upon one side of the said holders, and the said holders being secured to brackets arranged upon the transverse carxiers. This reduces wear in the bearings carry-ing the shares on the holders and in the bearings carrying theholders on the transverse carriers, thus ensuring that the said bearings will have a long life. Furthermore, the arrangement provides for simple installation and removal o~ the shares and holders if any defects arise, since the said components may be removed laterally and new components may be similarly replaced laterally upon the corresponding parts.
A particularly durable and wear resistant bearing for the shares may be obtained by using for each share two anti-friction bearings spaced laterally from each other.
In the case of a seed drill according to the invention in which the holders for the single disc shares comprise at least two hinged arms located one above the other and at least approximately parallel with each other, provision is also made for the bearings, at least in the lower arms, on the transverse carriers, to be almost as wide as the lateral distance between the shares arranged on one transverse carrier. This produces a particularly rugged and stable mounting for the holders, advantageously designed in the form of parallelograms. A
simple and durable design is achieved, without in any way im-pairing stability, by providing the bearings, at least for the lower arms of the holders, with bearing elements made of a synthetic material, If the lower arms of the holders are designed to resist torque, the transverse forces, applied by soil resistance to the shares, will be absorbed, in a favourable manner, just above the shares. The resulting torque will therefore be kept within limits and this, in turn, will have a favourable effect upon the bearings carrying the arrns on the transverse carriers.
Moreover it is also possible, as a result of this arrangement, to make the upper arms of the holders significantly lighter, ~;
since all they have to carry is the compressive and tensile loads acting in the direction of travel.
According to a preferred example of embodiment of the invention, the arms for the holders are hinged to vertical -3- `
carriers equipped at their lower ends with holder parts running in the direction of travel, the bearings for the single disc shares being located on the front holder parts, and a lateral distance being provided between each of the said bearings and the lower arms.
Finally, in the design according to the invention, pressure rollers, in alignment with the single disc shares located on the front holder parts, are mounted to rotate freely on the rear holder parts, upon vertical carriers, the said pressure rollers being set at an angle of incidence running in a direction opposite to that of the angle of incidence of the said s~gle disc shares. In this way, the lateral forces pro-duced by soil resistance, and acting upon the single disc shares, are very largely compensated for by the lateral forces acting upon the pressure rollers, with the result that the bearings provided for the holders are subjected to substantially less stress.
The invention is explained hereinafter in greater detail, in conjunction with the drawings attached hereto, and which illustrate the invention by way of example, wherein:
Figure 1 is a side elevation of a seed drill accord-ing to the invention, and Figure 2 is a diagrammatic representation, in plan view, of the arrangement of the single disc shares.
The seed drill according to the invention comprises a frame 1 upon which is arranged alternately a plurality of single disc shares, at equal distances S from each other, adapted to pivot in a vertical plane, with the aid of holders 4 on two transverse carriers 5, the distance Z between trans verse carriers 5, as seen in the direction of travel indicated by arrow 6, being equal to the distance between the two trans-verse rows 3.
.
Each holder 4 has two arms 7,8 located one above the other, the rear ends of which are hinged to a vertical carrier 9, whereas the front end of upper arrn 7 is hinged to an adjust-ing mechanism 10 and the front end of lower arm 8 is hinged to frame 1 in such a manner that it pivots in a vertical plane.
The lower ends of carriers 9 are equipped with holder parts 11 extending forwardly, as seen in the direction of travel 6, upon which single disc shares 2, forming an acute angle of incidence ~ in relation to the said direction of travel, are mounted to rotate freely upon wide bearings 12 arranged on one side of the said holder parts. Mounted rotatably upon holder parts 13 extending rearwardly from carriers 9, and behind shares 2, are pressure rollers 14 forming an angle of incidence ~, in relation to the direction of travel, the said angle running in a direction opposite to that of angle ~.
In this design, single dîsc bearings 12 each have two anti-friction roller bearings spaced widely apart by a distance L. The same bearings are used, in a one sided arrangement, for the pressure rollers 1~ mounted on rear holder parts 13.
In contrast to this, bearings 16 of torque resistant lower arms 8 are equipped with bearing elements 17 made of a synthetic material and are of a width B which is less than lateral distance ~, between the shares arranged upon a transverse carrier 5, only by the width of bearing brackets 18.
Vertical carriers 9 are arranged pivotably upon one side of arms 7,8 by means of wide bearings 19 which are also provided with bearing elements 17 made of a synthetic material.
This arrangement is such that a lateral distance D exists between each single disc share bearing 12 and lower arm 8.
Adjusting mechanism 10 comprises, for each transverse row 3 of shares, levers 22 united by transverse tubes 20,21, the levers in the rear transverse row being connected to those in the front transverse row by means of struts 23. Adjusting spindle 24 allows levers 22 to be pivoted back and forth in the direction of travel 6. This alters the inclination of vertical carriers 9 and produces, in conjunction with pressure rollers 14, variations in the depth of penetration T of the shares into the soil.
While the machine is in operation, seed in storage tank 25 is fed, through metering unit 26, and seed lines 27, to single disc shares 2, when it falls into seed furrows 28 pro-duced by the said shares.
i ~ .. . i .. . . . .. . . . . .
The present invention relates to a seed-drill with single-disc shares, arranged alternately, and spaced laterally from each other, in at least two -transverse rows lying one behind the other, upon an equal number of transverse carriers located with similar spacing one behind the other, the said shares being adapted to pivot in a vertical plane with the aid of holders, and being set at an acute angle to the direction of travel.
A seed-drill of this kind is described in U.S.
Patent 3,705,560. In this machine, the holders of ~he single-disc shares have at least two hinged arms arranged one above the other and at least approximately parallel with each other.
The advantages of this machine is that, even in weed-ridden fields, the seed can be sown in relatively closely~
spaced rows, since the distances between individual single-disc shares on one transverse carrier are so great that it is impossible for jamming to occur, even with large amounts of vegetation. Moreover, the same holders are used for all of the shares. The parallelogram design of the holders also promotes satisfactory sowin~, since the angle of incidence of the shares is independent of the depth of penetration.
One of the disadvantages of this machine is that ~-the bearings upon which the shares rotate upon the holders are narrow, wear rapidly, and need frequent replacement during the life of the machine. The replacement is labour and time-consuming, since the bearings are retained at both ends by parts of the holders. Furthermore, if bearing defec-ts develop while the machine is in use, undesirable interruption of the sowing operation arises.
This disadvantage is particularly serious if the machine is being used for direct-seeding, i.e. in fields which have not been prepared for seeding, since the previous harvest, --1-- ,, . ~ . . "
, in the conventional manner, by means of soil-cultivating equipment. The ground in such fields is hard and considerable lateral ~orces ~herefore act upon the shares, set at an angle to the direction of travel, and therefore upon the bearings thereof. Even with a small amount of wear in the bearings, the shares can no longer produce furrows of the necessary width for seeding. Instead, they form narrow channels into which the seeds do not fall and are therefore left lying on the ground uncovered. This is aggravated by the fact that this fault is apt to go unobserved for some time, resulting in a considerable reduction in yield.
The narrow bearings carrying the holders on the trans-verse carriers have the same disadvantages. Moreover, the effect of wear in these bearings is such that guidance of the shares in the ground is affected by varying lateral pressures acting upon them, and the seed-furrows can no longer be kept straight.
Now it is the purpose of the present invention to improve the arrangement of the single-disc shares and their holders upon the transverse carriers, in such a manner that the seed-drill will sow satisfactorily over long periods, even when used for direct seeding.
According to the invention, this purpose is achieved in that wide bearings are provided for mounting the single-disc shares upon the holders, and for mounting the said holders upon the transverse carriers, the said shares being mounted, easily detachably, upon one side of the said holders, and the said holders being secured to brackets arranged upon the transverse carxiers. This reduces wear in the bearings carry-ing the shares on the holders and in the bearings carrying theholders on the transverse carriers, thus ensuring that the said bearings will have a long life. Furthermore, the arrangement provides for simple installation and removal o~ the shares and holders if any defects arise, since the said components may be removed laterally and new components may be similarly replaced laterally upon the corresponding parts.
A particularly durable and wear resistant bearing for the shares may be obtained by using for each share two anti-friction bearings spaced laterally from each other.
In the case of a seed drill according to the invention in which the holders for the single disc shares comprise at least two hinged arms located one above the other and at least approximately parallel with each other, provision is also made for the bearings, at least in the lower arms, on the transverse carriers, to be almost as wide as the lateral distance between the shares arranged on one transverse carrier. This produces a particularly rugged and stable mounting for the holders, advantageously designed in the form of parallelograms. A
simple and durable design is achieved, without in any way im-pairing stability, by providing the bearings, at least for the lower arms of the holders, with bearing elements made of a synthetic material, If the lower arms of the holders are designed to resist torque, the transverse forces, applied by soil resistance to the shares, will be absorbed, in a favourable manner, just above the shares. The resulting torque will therefore be kept within limits and this, in turn, will have a favourable effect upon the bearings carrying the arrns on the transverse carriers.
Moreover it is also possible, as a result of this arrangement, to make the upper arms of the holders significantly lighter, ~;
since all they have to carry is the compressive and tensile loads acting in the direction of travel.
According to a preferred example of embodiment of the invention, the arms for the holders are hinged to vertical -3- `
carriers equipped at their lower ends with holder parts running in the direction of travel, the bearings for the single disc shares being located on the front holder parts, and a lateral distance being provided between each of the said bearings and the lower arms.
Finally, in the design according to the invention, pressure rollers, in alignment with the single disc shares located on the front holder parts, are mounted to rotate freely on the rear holder parts, upon vertical carriers, the said pressure rollers being set at an angle of incidence running in a direction opposite to that of the angle of incidence of the said s~gle disc shares. In this way, the lateral forces pro-duced by soil resistance, and acting upon the single disc shares, are very largely compensated for by the lateral forces acting upon the pressure rollers, with the result that the bearings provided for the holders are subjected to substantially less stress.
The invention is explained hereinafter in greater detail, in conjunction with the drawings attached hereto, and which illustrate the invention by way of example, wherein:
Figure 1 is a side elevation of a seed drill accord-ing to the invention, and Figure 2 is a diagrammatic representation, in plan view, of the arrangement of the single disc shares.
The seed drill according to the invention comprises a frame 1 upon which is arranged alternately a plurality of single disc shares, at equal distances S from each other, adapted to pivot in a vertical plane, with the aid of holders 4 on two transverse carriers 5, the distance Z between trans verse carriers 5, as seen in the direction of travel indicated by arrow 6, being equal to the distance between the two trans-verse rows 3.
.
Each holder 4 has two arms 7,8 located one above the other, the rear ends of which are hinged to a vertical carrier 9, whereas the front end of upper arrn 7 is hinged to an adjust-ing mechanism 10 and the front end of lower arm 8 is hinged to frame 1 in such a manner that it pivots in a vertical plane.
The lower ends of carriers 9 are equipped with holder parts 11 extending forwardly, as seen in the direction of travel 6, upon which single disc shares 2, forming an acute angle of incidence ~ in relation to the said direction of travel, are mounted to rotate freely upon wide bearings 12 arranged on one side of the said holder parts. Mounted rotatably upon holder parts 13 extending rearwardly from carriers 9, and behind shares 2, are pressure rollers 14 forming an angle of incidence ~, in relation to the direction of travel, the said angle running in a direction opposite to that of angle ~.
In this design, single dîsc bearings 12 each have two anti-friction roller bearings spaced widely apart by a distance L. The same bearings are used, in a one sided arrangement, for the pressure rollers 1~ mounted on rear holder parts 13.
In contrast to this, bearings 16 of torque resistant lower arms 8 are equipped with bearing elements 17 made of a synthetic material and are of a width B which is less than lateral distance ~, between the shares arranged upon a transverse carrier 5, only by the width of bearing brackets 18.
Vertical carriers 9 are arranged pivotably upon one side of arms 7,8 by means of wide bearings 19 which are also provided with bearing elements 17 made of a synthetic material.
This arrangement is such that a lateral distance D exists between each single disc share bearing 12 and lower arm 8.
Adjusting mechanism 10 comprises, for each transverse row 3 of shares, levers 22 united by transverse tubes 20,21, the levers in the rear transverse row being connected to those in the front transverse row by means of struts 23. Adjusting spindle 24 allows levers 22 to be pivoted back and forth in the direction of travel 6. This alters the inclination of vertical carriers 9 and produces, in conjunction with pressure rollers 14, variations in the depth of penetration T of the shares into the soil.
While the machine is in operation, seed in storage tank 25 is fed, through metering unit 26, and seed lines 27, to single disc shares 2, when it falls into seed furrows 28 pro-duced by the said shares.
i ~ .. . i .. . . . .. . . . . .
Claims (8)
1. A seed drill with single disc shares, arranged alternately, and spaced laterally from each other, in at least two transverse rows, upon an equal number of transverse carriers located, with similar spacing, one behind the other, the said shares being adapted to pivot in a vertical plane with the aid of holders, and being set at an acute angle to the direction of travel, characterized in that wide bearings are provided for mounting the single disc shares upon the holders and for mounting the said holders upon the transverse carriers the said shares being mounted, easily detachably, upon one side of the said holders, and the said holders being secured to the bearing brackets arranged upon the said transverse carriers.
2. A seed drill according to claim 1, characterized in that the single disc share bearings each have two anti-friction roller bearings spaced apart by a lateral dis-tance (L).
3. A seed drill according to claim 1, in which the holders for the single disc shares comprise at least two hinged arms located one above the other and at least approximately parallel with each other, characterized in that the bearings at least for the lower arms on the transverse carriers are almost as wide as the lateral distance (A) between the shares arranged upon one transverse carrier.
4. A seed drill according to claim 3, characterized in that the bearings, at least for the lower hinged arms of the holders, contain bearing elements made of a synthetic material.
5. A seed drill according to claims 3 or 4, characterized in that the lower hinged arms of the holders are de-signed to resist torsion.
6. A seed drill according to claim 3 characterized in that arms are hinged to vertical carriers equipped at their lower ends with holder parts running in the direction of travel; in that the bearings for the single disc shares are located on front holder parts; and in that a lateral distance (S) is pro-vided between each of the said bearings and the lower hinged arms.
7. A seed drill according to claim 6, characterized in that the vertical carriers are arranged on one side of the hinged arms, with the aid of wide bearings.
8. A seed drill according to claims 6 or 7, character-ized in that pressure rollers, aligned with the single disc shares located on the front holder parts, are mounted to rotate freely upon the rear holder parts on the vertical carriers, the said pressure rollers being set at an acute angle of incidence (.beta.) running in a direction opposite to that of the angle of incidence (.alpha.) of the single disc shares.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2929577.0-23 | 1979-07-21 | ||
| DE19792929577 DE2929577C2 (en) | 1979-07-21 | 1979-07-21 | Seed drill with single disc coulters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1121216A true CA1121216A (en) | 1982-04-06 |
Family
ID=6076361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000355359A Expired CA1121216A (en) | 1979-07-21 | 1980-07-03 | Seed drill with single disc shares |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA1121216A (en) |
| DE (1) | DE2929577C2 (en) |
| GB (1) | GB2059733B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5357884A (en) * | 1992-07-08 | 1994-10-25 | F.P. Bourgault Industries Air Seeder Division Ltd. | All purpose coulter drill |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPQ956000A0 (en) * | 2000-08-21 | 2000-09-14 | Bitza Research Pty Ltd | Agricultural apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE143392C (en) * | ||||
| DE226489C (en) * | 1909-12-11 | 1910-10-04 | ||
| US3705560A (en) * | 1971-09-24 | 1972-12-12 | Douglas E Lappin | Sectional articulated agricultural apparatus |
-
1979
- 1979-07-21 DE DE19792929577 patent/DE2929577C2/en not_active Expired
-
1980
- 1980-05-02 GB GB8014739A patent/GB2059733B/en not_active Expired
- 1980-07-03 CA CA000355359A patent/CA1121216A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5357884A (en) * | 1992-07-08 | 1994-10-25 | F.P. Bourgault Industries Air Seeder Division Ltd. | All purpose coulter drill |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2929577B1 (en) | 1981-01-08 |
| GB2059733B (en) | 1983-06-29 |
| DE2929577C2 (en) | 1981-08-20 |
| GB2059733A (en) | 1981-04-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |