GB190020458A - Improvements in Automatic Firealarms. - Google Patents
Improvements in Automatic Firealarms.Info
- Publication number
- GB190020458A GB190020458A GB190020458DA GB190020458A GB 190020458 A GB190020458 A GB 190020458A GB 190020458D A GB190020458D A GB 190020458DA GB 190020458 A GB190020458 A GB 190020458A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fire
- box
- disc
- contact
- closing
- 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
Abstract
20,458. Stiens, P., and Smith, P. J. Nov. 13. Alarms, fire.-Relates to a device for closing the circuit of an electric alarm in case of fire. In case of a sudden rise of temperature due to a fire, the corrugated cover d of the box a expands and makes contact between the points f and i, thus closing the circuit of an electric alarm connected to the terminals j, l. The contact-piece iismounted in an insulating-disc h, which is attached to a second corrugated disc e inside the box a. When the rise of temperature is slow, the inner disc e is heated through the holes m in the box, both discs d and e expand at the same rate, and the pointsf and i do not come in contact.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190020458T | 1900-11-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190020458A true GB190020458A (en) | 1900-12-22 |
Family
ID=32150105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190020458D Expired GB190020458A (en) | 1900-11-13 | 1900-11-13 | Improvements in Automatic Firealarms. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190020458A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2839630A (en) * | 1955-06-20 | 1958-06-17 | Bendix Aviat Corp | Pressure-responsive switch |
-
1900
- 1900-11-13 GB GB190020458D patent/GB190020458A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2839630A (en) * | 1955-06-20 | 1958-06-17 | Bendix Aviat Corp | Pressure-responsive switch |
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