GB791349A - Improvements relating to fire alarms - Google Patents
Improvements relating to fire alarmsInfo
- Publication number
- GB791349A GB791349A GB1961255A GB1961255A GB791349A GB 791349 A GB791349 A GB 791349A GB 1961255 A GB1961255 A GB 1961255A GB 1961255 A GB1961255 A GB 1961255A GB 791349 A GB791349 A GB 791349A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- flag
- group xxxviii
- around
- gong
- 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
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/02—Mechanical actuation of the alarm, e.g. by the breaking of a wire
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire Alarms (AREA)
Abstract
791,349. Spring power-storing mechanism. EVERED & CO., Ltd. July 6, 1956 [July 7, 1955], No. 19612/55. Class 10. [Also in Group XXXVIII] A fire alarm (see Group XXXVIII) comprising a bell of known type having a circular base plate and a gong 16 which is rotated to wind up a spring operating mechanism, is also provided with a flag indicator which moves out of the bell casing when the main spring is unwound. The flag comprises a plate 29 and is mounted on an arm 34 of a wire spring wound around a pillar 12 as shown in Figs. 1 and 9. A part 33 of this spring bears against the main spring 20, and the other end anchors around a front plate 14. In operation, when the alarm operates and the spring 20 unwinds the part 33 is angularly moved to show the flag 29, and when the spring 20 is rewound the coil spring 32 around the pillar 12 returns the flag to its covered position beneath the gong. Specification 791,331, [Group XXXVIII], is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1961255A GB791349A (en) | 1955-07-07 | 1955-07-07 | Improvements relating to fire alarms |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1961255A GB791349A (en) | 1955-07-07 | 1955-07-07 | Improvements relating to fire alarms |
Publications (1)
Publication Number | Publication Date |
---|---|
GB791349A true GB791349A (en) | 1958-02-26 |
Family
ID=10132269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1961255A Expired GB791349A (en) | 1955-07-07 | 1955-07-07 | Improvements relating to fire alarms |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB791349A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112435418A (en) * | 2020-11-26 | 2021-03-02 | 杨方旅 | Warning device for high-rise building based on centrifugal force change |
-
1955
- 1955-07-07 GB GB1961255A patent/GB791349A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112435418A (en) * | 2020-11-26 | 2021-03-02 | 杨方旅 | Warning device for high-rise building based on centrifugal force change |
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