GB840801A - Improvements in or relating to hydraulic tracer valve controlled systems - Google Patents
Improvements in or relating to hydraulic tracer valve controlled systemsInfo
- Publication number
- GB840801A GB840801A GB2762455A GB2762455A GB840801A GB 840801 A GB840801 A GB 840801A GB 2762455 A GB2762455 A GB 2762455A GB 2762455 A GB2762455 A GB 2762455A GB 840801 A GB840801 A GB 840801A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- passageway
- pressure
- tracer
- tracer valve
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q35/00—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
- B23Q35/04—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
- B23Q35/08—Means for transforming movement of the feeler or the like into feed movement of tool or work
- B23Q35/18—Means for transforming movement of the feeler or the like into feed movement of tool or work involving fluid means
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
840,801. Copy-milling. HAYES ENGINEERS (LEEDS) Ltd. Sept. 24, 1956 [Sept. 28, 1955], No. 27624/55. Class 83 (3). [Also in Group XXIX] A bleed-valve for connection in an hydraulic control system comprising a stylus-actuated tracer valve and an hydraulic motor controlled thereby to operate, e.g. a copying-machine tool, comprises a valve body 2 housing a liner 3 slidably mounting a valve piston 15 having an annular recess 22 co-operating with normallyclosed ports 23, 24 in the liner. The valvepiston, which is hollow at its ends, is subjected at one end, on which a spring 19 acts, to the pressure in a passageway 8 connected at 32 to the motor and at 31 to the down-stream side of the tracer valve, and at its other end to the pressure in a passageway 17 connected at 29 to a source of hydraulic pressure and at 30 to the upstream side of the tracer valve. On the stylus moving to close the tracer valve, the fall in pressure in the passageway 8 causes the valve piston to move rightwardly to uncover the ports 23, 24, so that any liquid that leaks past the tracer valve into the passageway 8 is bypassed through a restriction 9 and passages 7, 10, to a sump-passageway 11, to relieve the pressure on the motor so that it stops instantaneously with the closure of the tracer valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2762455A GB840801A (en) | 1955-09-28 | 1955-09-28 | Improvements in or relating to hydraulic tracer valve controlled systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2762455A GB840801A (en) | 1955-09-28 | 1955-09-28 | Improvements in or relating to hydraulic tracer valve controlled systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB840801A true GB840801A (en) | 1960-07-13 |
Family
ID=10262626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2762455A Expired GB840801A (en) | 1955-09-28 | 1955-09-28 | Improvements in or relating to hydraulic tracer valve controlled systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB840801A (en) |
-
1955
- 1955-09-28 GB GB2762455A patent/GB840801A/en not_active Expired
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