PT74219A - Hinge-type offset wheel harrow - Google Patents
Hinge-type offset wheel harrowInfo
- Publication number
- PT74219A PT74219A PT7421981A PT7421981A PT74219A PT 74219 A PT74219 A PT 74219A PT 7421981 A PT7421981 A PT 7421981A PT 7421981 A PT7421981 A PT 7421981A PT 74219 A PT74219 A PT 74219A
- Authority
- PT
- Portugal
- Prior art keywords
- harrow
- unit
- wheels
- transport
- units
- Prior art date
Links
Landscapes
- Agricultural Machines (AREA)
Abstract
The two gang disc harrow units are pivotally joined near corresponding ends by a vertical axis hinge coupling. Near their opposite corresponding ends, the harrow units are connected by a collapsible toggle linkage which operates in a horizontal plane under influence of a power cylinder, whereby the harrow units can be positioned at a prescribed angle for working the soil and in parallel relationship for transport. Two transport wheels are pivotally attached to the rear harrow unit on transverse pivot axis which are parallel to the rear unit. Power cylinders interconnecting these wheels with the rear harrow unit are operable to lower and raise the wheels for lifting and lowering the rear unit. The front harrow unit has a pivotal connection with a drawbar which in turn is coupled through a draft tongue with the hitch of a towing or transport vehicle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PT7421981A PT74219B (en) | 1981-12-29 | 1981-12-29 | Hinge-type offset wheel harrow |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PT7421981A PT74219B (en) | 1981-12-29 | 1981-12-29 | Hinge-type offset wheel harrow |
Publications (2)
Publication Number | Publication Date |
---|---|
PT74219A true PT74219A (en) | 1982-01-01 |
PT74219B PT74219B (en) | 1983-07-21 |
Family
ID=20083046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PT7421981A PT74219B (en) | 1981-12-29 | 1981-12-29 | Hinge-type offset wheel harrow |
Country Status (1)
Country | Link |
---|---|
PT (1) | PT74219B (en) |
-
1981
- 1981-12-29 PT PT7421981A patent/PT74219B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
PT74219B (en) | 1983-07-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM3A | Annulment or lapse |
Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 19990131 |