GB507223A - Improvements in harrows - Google Patents
Improvements in harrowsInfo
- Publication number
- GB507223A GB507223A GB3435037A GB3435037A GB507223A GB 507223 A GB507223 A GB 507223A GB 3435037 A GB3435037 A GB 3435037A GB 3435037 A GB3435037 A GB 3435037A GB 507223 A GB507223 A GB 507223A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tines
- bars
- cams
- levers
- raised
- 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
- A01B45/00—Machines for treating meadows or lawns, e.g. for sports grounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Working Implements (AREA)
Abstract
507,223. Implements for working land. BAMFORB, C. J., BAMFORD, J. C., and BAMFORD, H. V..Dec. 11, 1937, No. 34350. [Class 6 (i)] A harrow is provided with two or more sets of tines 30 each set comprising a number of tines extending in a row transversely of the machine and being raised and lowered periodically by means of cams 45, 46. The cams actuate levers 38, 39 carrying cross bars 40, 41 from which are suspended chains or other flexible members 42, 43 attached to the tine bars 28, 29. When the levers 38, 39 are raised all the corresponding tine bars and tines are raised together but when the latter have been lowered to engage the ground the flexible members 42, 43 allow the tine bars and tines to move up and down individually. Groups of tines in a set may be coupled together to form a unit. The tine bars are pivoted on an axis 19 and the tines 30 may be adjustable and may carry fixed or adjustable shoes 35 to limit the depth of working. The cams 45, 46 are so shaped that the levers 38, 39 drop freely during the first part of their downward movement and thus shake off soil &c. adhering to the tines. The part 52 of the cams then lowers the bars gradually. The tines on bars 28 are not lifted from the ground till they have reached the point whore the forward set of tines on the bars 29 entered the ground. The front of the machine is provided with an adjustable drawbar 26.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3435037A GB507223A (en) | 1937-12-11 | 1937-12-11 | Improvements in harrows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3435037A GB507223A (en) | 1937-12-11 | 1937-12-11 | Improvements in harrows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB507223A true GB507223A (en) | 1939-06-12 |
Family
ID=10364549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3435037A Expired GB507223A (en) | 1937-12-11 | 1937-12-11 | Improvements in harrows |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB507223A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107548588A (en) * | 2017-09-26 | 2018-01-09 | 甘肃洮河拖拉机制造有限公司 | The useless film of shallow loose rake teeth profiling collects machine |
-
1937
- 1937-12-11 GB GB3435037A patent/GB507223A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107548588A (en) * | 2017-09-26 | 2018-01-09 | 甘肃洮河拖拉机制造有限公司 | The useless film of shallow loose rake teeth profiling collects machine |
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