GB577744A - Improvements in or relating to temperature regulating installations - Google Patents
Improvements in or relating to temperature regulating installationsInfo
- Publication number
- GB577744A GB577744A GB14673/42A GB1467342A GB577744A GB 577744 A GB577744 A GB 577744A GB 14673/42 A GB14673/42 A GB 14673/42A GB 1467342 A GB1467342 A GB 1467342A GB 577744 A GB577744 A GB 577744A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- energized
- local
- operating
- auxiliary heater
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0202—Switches
- H05B1/0208—Switches actuated by the expansion or evaporation of a gas or liquid
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
Landscapes
- Control Of Temperature (AREA)
Abstract
577,744. Telecontrol of temperature regulating installations. LANDIS & GYR SOC. ANON. Oct. 20, 1942, No. 14673. Convention date, Nov. 24, 1941. [Class 40 (i)] In a system in which a thermostat is provided with an auxiliary heater 3, the current through the latter is controllable from a number of different stations a, b and c. A station gets control by operating its key D which on depression closes its upper earlier than its lower contacts and on release opens its lower contacts before its upper ones. On the operation of D therefore the re-setting coil of the local relay R, which is of the type having no bias springs &c. is energized and remains energized when, shortly afterwards, the operating coils of the relays R at all the stations are energized since the resetting coil overpowers the actuating coil. In these conditions, the local relay is not actuated but the others are and in consequence all the regulating resistances W, which are connected in series, are shunted out except the local one which can then be used for exercising a desired control on the auxiliary heater 3. The release of the key makes no difference since the local resetting coil is held energized until after the circuit of the operating coil has opened. The Specification as open to inspection under Sect. 91 comprises also a system in which a number of thermostats are selectively controlled from a single station. The system forms the subject-matter of Specification 580,959 and is not included in the present Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH577744X | 1941-11-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB577744A true GB577744A (en) | 1946-05-30 |
Family
ID=4521318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14673/42A Expired GB577744A (en) | 1941-11-24 | 1942-10-20 | Improvements in or relating to temperature regulating installations |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB577744A (en) |
-
1942
- 1942-10-20 GB GB14673/42A patent/GB577744A/en not_active Expired
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