CA1202207A - Rotary tiller - Google Patents
Rotary tillerInfo
- Publication number
- CA1202207A CA1202207A CA000421264A CA421264A CA1202207A CA 1202207 A CA1202207 A CA 1202207A CA 000421264 A CA000421264 A CA 000421264A CA 421264 A CA421264 A CA 421264A CA 1202207 A CA1202207 A CA 1202207A
- Authority
- CA
- Canada
- Prior art keywords
- teeth
- rotary tiller
- rotor plate
- plates
- drive
- 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
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
- A01B33/06—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs with tools on vertical or steeply-inclined shaft
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
- A01B33/08—Tools; Details, e.g. adaptations of transmissions or gearings
- A01B33/10—Structural or functional features of the tools ; Theoretical aspects of the cutting action
- A01B33/106—Structural or functional features of the tools ; Theoretical aspects of the cutting action the rotating shaft being oriented vertically or steeply inclined
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
- A01B33/08—Tools; Details, e.g. adaptations of transmissions or gearings
- A01B33/14—Attaching the tools to the rotating shaft, e.g. resiliently or flexibly-attached tools
- A01B33/146—Attaching the tools to the rotating shaft, e.g. resiliently or flexibly-attached tools the rotating shaft being oriented vertically or steeply inclined
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Working Implements (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A rotary tiller includes a pair of circular plates which are rotated by a single drive connected to a shaft on each plate by pulleys and belts; a plurality of radial rows of teeth, which are slidably mounted in the plates; and a cam arrangement for reciprocating each tooth once during each revolution of the plates, so that debris is removed from the teeth.
A rotary tiller includes a pair of circular plates which are rotated by a single drive connected to a shaft on each plate by pulleys and belts; a plurality of radial rows of teeth, which are slidably mounted in the plates; and a cam arrangement for reciprocating each tooth once during each revolution of the plates, so that debris is removed from the teeth.
Description
This invention relates to a tiller, and in particular to a rotary tiller.
The conven-tional tiller includes a frame, usually rect-angular, or a bar to which is connected a plurality of cutter teeth. With a view to efficiently preparing -the earth for planting, rotary tillers have been proposed. Usually~ tillers of this type include a plurality of shafts with an arm rotatably mounted thereon, and a tooth at each end of the arm for cutting through the soll. However, to the inventor's knowledge a rotary tiller including a plurality of teeth driven by a single drive has never been proposedO
The object of the present invention is to provide a rela-tively simple tiller in which a plurality of teeth are driven in a circle by a single drive.
It is preferable to reciprocate the teeth vertically during rotation, so that earth and debris on the teeth is removed.
Thus, the tiller is less likely to become clogged during use.
Accordingly, the present invention relates to a rotary tiller comprising:
~0 (a) a rotor plate means;
(b) a plurality of teeth means carried by said plate means and extending downwardly therefrom in use; and (c) drive means for rotating said rotor plate means, whereby said teeth can be caused to cultivate the soil in a circular path when the rotor plate means is rotated in a fixed position.
The invention will now be described in greater detail wi-th reference to the accompanying drawings, which illustrate a preferred embodiment of the invention, and wherein:
Figure 1 is a schematic plan view of a rotary tiller in accordance with the present invention;
Figure ~ is a schematic perspective view from above of a portion of the tiller of Fig. l;
Figure 3 is a perspective view from above of a tooth return mechanism;
Figure 4 is a cross section taken generally along line IV-IV of Fig. 4;
Figure 5 is a perspective view of one end of a cam follower and cam used in the tiller of Figs. 1 to 4; and Figure 6 is a perspective view oE the other end of the cam follower of Fig. 5.
With reference to the Figs. 1 and 2 of the drawings, the rotary tiller of the present invention includes a pair of circular rotor plates 1 and 2. The plates 1 and 2 would normally be mounted in a frame (not shown) for rotation around their longitudinal axes. A shaft 3 (Fig. 2) extends upwardly from each plate 1 and 2 through a bushing 4. A pulley 5 on the top end of the shaft 3 i5 connected to one of a palr of pulleys 6 on the top end of a ~0 shaft 7 by a belt 8. The shaft 7 extends downwardly through a bushing 9. A pulley 10 on the lower end of the shaft 7 is connected to a drive pulley 11 by a belt 12. The pulley 11 is a driven pulley and is connected to or part of a drive assembly (not shown), i.e. the pulley 11 is on the end of a motor drive shaft, or is connected to the drive shaft by a transmission. In any event, the pulley 11 is used to rotate the pulley 10, the shaft 7, the pulleys 6, the pulleys 5, the shafts 3 and consequently the plates 1 and 2.
The bushings 4 and 9 are interconnected by a crossbar 14.
It should be readily apparent that the drive elements, including the bushings 4 and 9 are fixedly mounted on a towing frame (not shown) or the like, and that the plates 1 and 2 are rotatable.
With reference to Figs. 3 and 4, a plurality of teeth 16 are slidably mounted in each plate 1 and 2 for vertical recipro-cation therein. Each tooth 16 includes a shank 17 which extends through a bushing 18 in the plate 1 or 2, so that the tooth can slide vertically in the plate. As shown in Fig. 1, there are a plurality of rows of teeth 16 extendlng radially of each plate 1 and 2.
In order to reciprocate the teeth 16 in the plates 1 and
The conven-tional tiller includes a frame, usually rect-angular, or a bar to which is connected a plurality of cutter teeth. With a view to efficiently preparing -the earth for planting, rotary tillers have been proposed. Usually~ tillers of this type include a plurality of shafts with an arm rotatably mounted thereon, and a tooth at each end of the arm for cutting through the soll. However, to the inventor's knowledge a rotary tiller including a plurality of teeth driven by a single drive has never been proposedO
The object of the present invention is to provide a rela-tively simple tiller in which a plurality of teeth are driven in a circle by a single drive.
It is preferable to reciprocate the teeth vertically during rotation, so that earth and debris on the teeth is removed.
Thus, the tiller is less likely to become clogged during use.
Accordingly, the present invention relates to a rotary tiller comprising:
~0 (a) a rotor plate means;
(b) a plurality of teeth means carried by said plate means and extending downwardly therefrom in use; and (c) drive means for rotating said rotor plate means, whereby said teeth can be caused to cultivate the soil in a circular path when the rotor plate means is rotated in a fixed position.
The invention will now be described in greater detail wi-th reference to the accompanying drawings, which illustrate a preferred embodiment of the invention, and wherein:
Figure 1 is a schematic plan view of a rotary tiller in accordance with the present invention;
Figure ~ is a schematic perspective view from above of a portion of the tiller of Fig. l;
Figure 3 is a perspective view from above of a tooth return mechanism;
Figure 4 is a cross section taken generally along line IV-IV of Fig. 4;
Figure 5 is a perspective view of one end of a cam follower and cam used in the tiller of Figs. 1 to 4; and Figure 6 is a perspective view oE the other end of the cam follower of Fig. 5.
With reference to the Figs. 1 and 2 of the drawings, the rotary tiller of the present invention includes a pair of circular rotor plates 1 and 2. The plates 1 and 2 would normally be mounted in a frame (not shown) for rotation around their longitudinal axes. A shaft 3 (Fig. 2) extends upwardly from each plate 1 and 2 through a bushing 4. A pulley 5 on the top end of the shaft 3 i5 connected to one of a palr of pulleys 6 on the top end of a ~0 shaft 7 by a belt 8. The shaft 7 extends downwardly through a bushing 9. A pulley 10 on the lower end of the shaft 7 is connected to a drive pulley 11 by a belt 12. The pulley 11 is a driven pulley and is connected to or part of a drive assembly (not shown), i.e. the pulley 11 is on the end of a motor drive shaft, or is connected to the drive shaft by a transmission. In any event, the pulley 11 is used to rotate the pulley 10, the shaft 7, the pulleys 6, the pulleys 5, the shafts 3 and consequently the plates 1 and 2.
The bushings 4 and 9 are interconnected by a crossbar 14.
It should be readily apparent that the drive elements, including the bushings 4 and 9 are fixedly mounted on a towing frame (not shown) or the like, and that the plates 1 and 2 are rotatable.
With reference to Figs. 3 and 4, a plurality of teeth 16 are slidably mounted in each plate 1 and 2 for vertical recipro-cation therein. Each tooth 16 includes a shank 17 which extends through a bushing 18 in the plate 1 or 2, so that the tooth can slide vertically in the plate. As shown in Fig. 1, there are a plurality of rows of teeth 16 extendlng radially of each plate 1 and 2.
In order to reciprocate the teeth 16 in the plates 1 and
2, each tooth 16 extends through and is connected to a radially extending lif-t bar 19. A helical spring 20 is provided on the shank 17 of each of the innermost and outermost teeth 16 in each row of teeth. The springs 20 are sandwiched between the lift bar 19 and an inverted U-shaped bracket 21. The bracket 21 is connected to the plate 1 or 2. The shank 17 of the tooth 16 extends upwardly thxough a bushing 22 in the bracket 21. Thus, when the tooth 16 and the liEt bar 19 move upwardly, the spring 20 is compressed to bias the teeth and the lift bar downwardly into the earth.
The lift bar 19 is reciprocated by a pair of cams 23 and 24 (Figs. 5 and 6). Each of the cams 23 and 24 is defined by a ramp for receiving a roller 25 on the end of the lift bar 19. The cam 23 is integral with the bushing 4 and extends radially outwardly into the circular path of travel of the inner end o~ the rod 19.
The cam 24 is on the bottom end of an arm 27 (Figs. 1 and 6), which extends downwardly from the crossbar 14. The cam 24 extends inwardly into the circular path of travel of the ou-ter end of the rod 19. Thus, as the plate 1 or 2 rotakes, the rollers 25 ride up and down the cams 23 and 24 to cause the lift bars 19 and -the teeth 16 attached thereto to reciprocate vertically.
In operation, the rotor plates 1 and 2 are towed wi-th the teeth 16 penetrating the soil. The plates 1 and 2 are rotated by the pulley 11, belt 12, pulley 10, shaft 7, pulleys 6, belts 8, pulleys 5 and shafts 3. During each revolution of each plate 1 and 2, the rods 19 are moved upwardly to withdraw the teeth 16 at least partially from the soil. As a result, debris adhering to the teeth i5 periodically dislodged to prevent clog-ging of the tiller.
The tiller of the pre~ent invention i5 useful for culti-vating close to plants without damaging the plants.
The lift bar 19 is reciprocated by a pair of cams 23 and 24 (Figs. 5 and 6). Each of the cams 23 and 24 is defined by a ramp for receiving a roller 25 on the end of the lift bar 19. The cam 23 is integral with the bushing 4 and extends radially outwardly into the circular path of travel of the inner end o~ the rod 19.
The cam 24 is on the bottom end of an arm 27 (Figs. 1 and 6), which extends downwardly from the crossbar 14. The cam 24 extends inwardly into the circular path of travel of the ou-ter end of the rod 19. Thus, as the plate 1 or 2 rotakes, the rollers 25 ride up and down the cams 23 and 24 to cause the lift bars 19 and -the teeth 16 attached thereto to reciprocate vertically.
In operation, the rotor plates 1 and 2 are towed wi-th the teeth 16 penetrating the soil. The plates 1 and 2 are rotated by the pulley 11, belt 12, pulley 10, shaft 7, pulleys 6, belts 8, pulleys 5 and shafts 3. During each revolution of each plate 1 and 2, the rods 19 are moved upwardly to withdraw the teeth 16 at least partially from the soil. As a result, debris adhering to the teeth i5 periodically dislodged to prevent clog-ging of the tiller.
The tiller of the pre~ent invention i5 useful for culti-vating close to plants without damaging the plants.
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A rotary tiller comprising (a) circular rotor plate means;
(b) a plurality of radially extending rows of teeth means carried by said plate means extending downwardly therefrom in use, each said row including a plurality of said teeth means;
and (c) drive means for rotating said rotor plate means, whereby said teeth means can be caused to cultivate the soil in circular paths when the rotor plate means is rotated in a fixed position.
(b) a plurality of radially extending rows of teeth means carried by said plate means extending downwardly therefrom in use, each said row including a plurality of said teeth means;
and (c) drive means for rotating said rotor plate means, whereby said teeth means can be caused to cultivate the soil in circular paths when the rotor plate means is rotated in a fixed position.
2. A rotary tiller according to claim 1, including cam means for causing said teeth means to reciprocate vertically during rotation with said rotor plate means.
3. A rotary tiller according to claim 1, including a plurality of rotor plates for rotation by said drive means.
4. A rotary tiller according to claim 3, wherein said drive means includes shaft means on each of said rotor plates;
pulley means on said shaft means; and belt means for connecting said pulley means to a drive motor.
pulley means on said shaft means; and belt means for connecting said pulley means to a drive motor.
5. A rotary tiller according to claim 2, wherein said cam means includes a radially extending lift bar carrying said teeth means in each said row, and a pair of cams for engagement by the ends of said lift bar during rotation of said rotor plate means for raising and lowering said lift bar and teeth means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000421264A CA1202207A (en) | 1983-02-09 | 1983-02-09 | Rotary tiller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000421264A CA1202207A (en) | 1983-02-09 | 1983-02-09 | Rotary tiller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1202207A true CA1202207A (en) | 1986-03-25 |
Family
ID=4124528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000421264A Expired CA1202207A (en) | 1983-02-09 | 1983-02-09 | Rotary tiller |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1202207A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106385808A (en) * | 2016-08-21 | 2017-02-15 | 浙江财经大学 | Electric soil flattening device for seedling growing land |
-
1983
- 1983-02-09 CA CA000421264A patent/CA1202207A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106385808A (en) * | 2016-08-21 | 2017-02-15 | 浙江财经大学 | Electric soil flattening device for seedling growing land |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |