GB765572A - Improvements in electric temperature sensitive switch devices for fire alarms - Google Patents
Improvements in electric temperature sensitive switch devices for fire alarmsInfo
- Publication number
- GB765572A GB765572A GB656054A GB656054A GB765572A GB 765572 A GB765572 A GB 765572A GB 656054 A GB656054 A GB 656054A GB 656054 A GB656054 A GB 656054A GB 765572 A GB765572 A GB 765572A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blade
- casing
- contacts
- temperature sensitive
- sensitive switch
- 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
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K5/00—Measuring temperature based on the expansion or contraction of a material
- G01K5/48—Measuring temperature based on the expansion or contraction of a material the material being a solid
- G01K5/56—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid
- G01K5/62—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid the solid body being formed of compounded strips or plates, e.g. bimetallic strip
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
765,572. Thermal switches. SINGLETON, S. A. March 4, 1955 [March 5, 1954], No. 6560/54. Class 38(5) A switch for a fire alarm comprises contacts e<SP>1</SP>, b<SP>1</SP> mounted respectively on a leaf spring e and a bimetal blade b located in a casing c, and a bimetal blade a outside the casing and mechanically connected to the spring e. Blade a responds to rapid temperature rises to push contact e<SP>1</SP> into engagement with contact b<SP>1</SP>, but on slow increases blades a, b and springs e move together until, at a predetermined temperature, blade b abuts a stop q and the contacts close. A dustproof cover d is fitted and casing c is sealed so as to be dust and moisture-proof. In an alternative arrangement, the contacts are normally closed, and open on temperature rises.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB656054A GB765572A (en) | 1954-03-05 | 1954-03-05 | Improvements in electric temperature sensitive switch devices for fire alarms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB656054A GB765572A (en) | 1954-03-05 | 1954-03-05 | Improvements in electric temperature sensitive switch devices for fire alarms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB765572A true GB765572A (en) | 1957-01-09 |
Family
ID=9816728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB656054A Expired GB765572A (en) | 1954-03-05 | 1954-03-05 | Improvements in electric temperature sensitive switch devices for fire alarms |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB765572A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959573A (en) * | 2021-10-25 | 2022-01-21 | 安徽春辉仪表线缆集团有限公司 | Electric contact bimetallic thermometer capable of self-power-off alarm |
| CN114326853A (en) * | 2021-12-22 | 2022-04-12 | 江苏英格菲电器科技有限公司 | Temperature controller with multiple adjusting mechanisms |
-
1954
- 1954-03-05 GB GB656054A patent/GB765572A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959573A (en) * | 2021-10-25 | 2022-01-21 | 安徽春辉仪表线缆集团有限公司 | Electric contact bimetallic thermometer capable of self-power-off alarm |
| CN113959573B (en) * | 2021-10-25 | 2023-11-17 | 安徽春辉仪表线缆集团有限公司 | Electric contact bimetal thermometer capable of giving alarm when power is off |
| CN114326853A (en) * | 2021-12-22 | 2022-04-12 | 江苏英格菲电器科技有限公司 | Temperature controller with multiple adjusting mechanisms |
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