GB585939A - Improvements in and relating to hydraulically operated coupling means for the attachment of agricultural implements to tractors - Google Patents
Improvements in and relating to hydraulically operated coupling means for the attachment of agricultural implements to tractorsInfo
- Publication number
- GB585939A GB585939A GB1536744A GB1536744A GB585939A GB 585939 A GB585939 A GB 585939A GB 1536744 A GB1536744 A GB 1536744A GB 1536744 A GB1536744 A GB 1536744A GB 585939 A GB585939 A GB 585939A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control valve
- cylinder
- piston
- power
- links
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
585,939. Agricultural implements. EWING, R. W. C. Aug. 11, 1944, No. 15367. [Class 6 (i)] [Also in Groups XXIX and XXXII] In a hydraulically operated coupling means for raising or lowering an agricultural implement connected to a tractor, a power piston 3, Fig. 1, on the tractor frame or tow-bar rotates a shaft 3c having at each end an arm 3e connected to links 3f, 3g, the arms 3g being pivotally connected to the frame of the implement whilst a further link, not shown, is connected to the cover of a casing 1, housing the power operated means, and to a braced upright secured to the implement frame. The casing 1 contains a pump 4, the power piston 3 in a cylinder 2, and a control valve 12, Fig. 4, and non-return valve 16 in a casting attached to the cylinder 2. The control valve is provided with a flange 15 which is raised by the skirt of the piston 3 at the top of its stroke to cut off the supply of fluid to the power piston by obscuring a port 10 leading to a chamber 11 housing the non- return valve 16. A hand-lever 20 is depressed when the links are to be raised, the lever moving the control valve downwardly until the port 13 therein registers with ports 9, 10 the pressure fluid flowing through pipe 7, ports 9, 13, 10 to chamber 11 and thence through non-return valve 16 and pipe 19 to the bottom of cylinder 2. When the piston reaches the top of its stroke its skirt contacts the flange 15 to raise the control valve 12 and automatically cut off the pressure fluid from the cylinder 2 and divert it to the sump through a recess 14a in the control valve. The links are lowered into an adjusted position by raising the lever 20 to dislodge the non-return valve 16 from its seating, the fluid from the power cylinder passing through a throttling orifice 20c in the control valve to regulate the speed of descent of the piston.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1536744A GB585939A (en) | 1944-08-11 | 1944-08-11 | Improvements in and relating to hydraulically operated coupling means for the attachment of agricultural implements to tractors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1536744A GB585939A (en) | 1944-08-11 | 1944-08-11 | Improvements in and relating to hydraulically operated coupling means for the attachment of agricultural implements to tractors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB585939A true GB585939A (en) | 1947-02-28 |
Family
ID=10057910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1536744A Expired GB585939A (en) | 1944-08-11 | 1944-08-11 | Improvements in and relating to hydraulically operated coupling means for the attachment of agricultural implements to tractors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB585939A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE885016C (en) * | 1950-07-07 | 1953-07-30 | Int Harvester Co | Device for raising and lowering one or more moving parts of a device connected to a tractor |
-
1944
- 1944-08-11 GB GB1536744A patent/GB585939A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE885016C (en) * | 1950-07-07 | 1953-07-30 | Int Harvester Co | Device for raising and lowering one or more moving parts of a device connected to a tractor |
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