GB783254A - An improved hydraulic control - Google Patents
An improved hydraulic controlInfo
- Publication number
- GB783254A GB783254A GB13156/57A GB1315657A GB783254A GB 783254 A GB783254 A GB 783254A GB 13156/57 A GB13156/57 A GB 13156/57A GB 1315657 A GB1315657 A GB 1315657A GB 783254 A GB783254 A GB 783254A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- pressure
- liquid
- reversing valve
- stop
- 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
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
- B24B47/06—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by liquid or gas pressure only
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
783,254. Hydraulic machines. PULTRA, Ltd. April 29, 1954 [May 28, 1953], No. 13156/57. Divided out of 783,172. Class 69 (2). An hydraulicallyactuated valve reverses the direction of motion of a piston connected to a machine tool table at each end of the stroke of the piston upon the supply pressure ex. ceeding the return pressure by a predetermined amount. A reversing valve 17 in the position shown directs liquid from a dump 18 to an end 22 of a cylinder 13, liquid from an end 20 passing to exhaust through an unloading valve 25. When the table contacts a stop 32 pressure in the end 22 increases until a differential valve 29 is moved to the left, directing liquid to the right-hand end of the reversing valve 17 to move it to the left. When the table contacts a stop 33 the increase in pressure in the end 20 acts on a differential valve 26 which is moved to the right and thereupon directs liquid to the left-hand end of the reversing valve.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB14835/53A GB783172A (en) | 1953-05-28 | 1953-05-28 | An improved hydraulic control |
| GB13156/57A GB783254A (en) | 1953-05-28 | 1953-05-28 | An improved hydraulic control |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB14835/53A GB783172A (en) | 1953-05-28 | 1953-05-28 | An improved hydraulic control |
| GB13156/57A GB783254A (en) | 1953-05-28 | 1953-05-28 | An improved hydraulic control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB783254A true GB783254A (en) | 1957-09-18 |
Family
ID=26249601
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14835/53A Expired GB783172A (en) | 1953-05-28 | 1953-05-28 | An improved hydraulic control |
| GB13156/57A Expired GB783254A (en) | 1953-05-28 | 1953-05-28 | An improved hydraulic control |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14835/53A Expired GB783172A (en) | 1953-05-28 | 1953-05-28 | An improved hydraulic control |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB783172A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410803B (en) * | 2013-08-13 | 2015-11-25 | 常德中联重科液压有限公司 | Hydraulic control reversing valve, linkage control hydraulic system and hydraulic control system of excavator |
-
1953
- 1953-05-28 GB GB14835/53A patent/GB783172A/en not_active Expired
- 1953-05-28 GB GB13156/57A patent/GB783254A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB783172A (en) | 1957-09-18 |
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