GB632884A - Improvements in or relating to tractors and working implements associated therewith - Google Patents
Improvements in or relating to tractors and working implements associated therewithInfo
- Publication number
- GB632884A GB632884A GB28438/47A GB2843847A GB632884A GB 632884 A GB632884 A GB 632884A GB 28438/47 A GB28438/47 A GB 28438/47A GB 2843847 A GB2843847 A GB 2843847A GB 632884 A GB632884 A GB 632884A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder
- valve
- main cylinder
- lever
- pivoted
- 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
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
- A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Working Implements (AREA)
Abstract
632,884. Agricultural implements. ZBROJOVKA BRNO, NARODNI PODNIK. Oct. 24, 1947, No. 28438. Convention date, Nov. 4, 1946. [Class 6(i)] [Also in Group XXIX] An automatic depth control for the hydraulic lifting mechanism of a tractor comprises a subsidiary cylinder 23 responsive to the pressure in the main cylinder 10 and acting on a distributer 16 for the working fluid in such a way that changes in pressure in the main cylinder automatically effect lifting or lowering of the implement. The implement 1 is connected by a triangulated linkage 2, 3, 4 to upper and lower arms 5 and 6 pivoted to the tractor. The piston of the main cylinder 10 is attached to the arm 6. A conduit 11 connects the cylinder to a distributer 16 having a rotary valve 15 communicating with ports 13 and 14 leading to a pump and reservoir respectively. The valve rotated by a rack 18 and pinion 17 from a system of levers 19, 20, 28, 29 pivoted to a hand lever 35, and, at 21, to an arm 22 fixed to the arm 6. The lever 28 is pivoted at 27 to the piston 24 of a subsidiary cylinder 23 connected to the main cylinder 1Q. Manual movement of the lever 35 to the right moves the lever 20 about the pivot 21 and, by rotating the valve, puts the conduit 11 into communication with the reservoir. The implement then falls until the consequent movement of the pivot 21 rotates the valve in the opposite direction. Changes in working resistance are transmitted as increased or decreased pressure in the main cylinder and this effects movement of the spring-loaded piston 24 in the subsidiary cylinder 23. The pivot 27 is thereby moved to rotate the valve 15 in the appropriate direction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS632884X | 1946-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB632884A true GB632884A (en) | 1949-12-05 |
Family
ID=5454116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28438/47A Expired GB632884A (en) | 1946-11-04 | 1947-10-24 | Improvements in or relating to tractors and working implements associated therewith |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB632884A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2721508A (en) * | 1951-11-26 | 1955-10-25 | Deere Mfg Co | Automatic load control for agricultural vehicle-implement outfits |
| US3167133A (en) * | 1962-08-31 | 1965-01-26 | Massey Ferguson Ltd | Power operated hitch providing constant weight transfer |
| US3191687A (en) * | 1962-04-25 | 1965-06-29 | Massey Ferguson Inc | Automatic draft control and compensating system for tractors |
| US3275085A (en) * | 1962-08-01 | 1966-09-27 | Massey Ferguson Inc | Power operating and control system for tractors |
-
1947
- 1947-10-24 GB GB28438/47A patent/GB632884A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2721508A (en) * | 1951-11-26 | 1955-10-25 | Deere Mfg Co | Automatic load control for agricultural vehicle-implement outfits |
| US3191687A (en) * | 1962-04-25 | 1965-06-29 | Massey Ferguson Inc | Automatic draft control and compensating system for tractors |
| US3275085A (en) * | 1962-08-01 | 1966-09-27 | Massey Ferguson Inc | Power operating and control system for tractors |
| US3167133A (en) * | 1962-08-31 | 1965-01-26 | Massey Ferguson Ltd | Power operated hitch providing constant weight transfer |
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