GB773593A - Improvements in or relating to thermostatically controlled gas valves - Google Patents
Improvements in or relating to thermostatically controlled gas valvesInfo
- Publication number
- GB773593A GB773593A GB547554A GB547554A GB773593A GB 773593 A GB773593 A GB 773593A GB 547554 A GB547554 A GB 547554A GB 547554 A GB547554 A GB 547554A GB 773593 A GB773593 A GB 773593A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- bellows
- cock
- engages
- spring
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
- G05G5/06—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G2700/00—Control mechanisms or elements therefor applying a mechanical movement
- G05G2700/04—Control mechanisms limiting amplitude or adjusting datum position
- G05G2700/08—Control mechanisms for locking members in one or more positions
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
773,593. Thermally-actuated valves. BRITISH THERMOSTAT CO., Ltd. Feb. 18, 1955 [Feb. 24, 1954], No. 5475/54. Class 135. A gas supply valve is provided with latching means to lock a rotary plug cock 1 in its closed or open position and a common manual member 16 for turning the cock between these positions but capable of disengagement in the fullyopened position of the latching means for independent operation to vary the temperature setting of a thermal statically controlled gas valve 5. A slotted arm 24 attached to the plug cock is locked in its closed position by engaging between a lug and a boss on a locking plate 25. On depressing the member 16 against a spring 28 the plate 25 is moved downwards and a pin 23 engages in the arm slot 24 so that the rotation of the member 16 turns the cock to its open position whereupon release of the member 16 allows the plate to lock the arm against another lug and at the same time lifts the pin out of the slot. Further rotation of the member 16 engages the bent spindle 14 and rotates the screw 15 so that the thermostatic valve seat 6, sealed to the casing by bellows 30, moves up under the spring 29. Temperature variation of the bulb 9 moves the bellows 7 to vary the position of the valve 5 with respect to its seat 6, an overload spring 36 being provided between the bellows and the valve. To compensate for local temperature variations a bi-metal disc may form the connection between the bellows 7 and the valve stem 33. A pin on member 16 engages axially displaced connected slots 18 in the casing spigot 17 to limit rotation of the member 16. The spindle 13 is initially set by a screw 34 and resilient bush 35.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB547554A GB773593A (en) | 1954-02-24 | 1954-02-24 | Improvements in or relating to thermostatically controlled gas valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB547554A GB773593A (en) | 1954-02-24 | 1954-02-24 | Improvements in or relating to thermostatically controlled gas valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB773593A true GB773593A (en) | 1957-05-01 |
Family
ID=9796886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB547554A Expired GB773593A (en) | 1954-02-24 | 1954-02-24 | Improvements in or relating to thermostatically controlled gas valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB773593A (en) |
-
1954
- 1954-02-24 GB GB547554A patent/GB773593A/en not_active Expired
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