GB636272A - Improvements in or relating to fire alarm equipment - Google Patents
Improvements in or relating to fire alarm equipmentInfo
- Publication number
- GB636272A GB636272A GB2723147A GB2723147A GB636272A GB 636272 A GB636272 A GB 636272A GB 2723147 A GB2723147 A GB 2723147A GB 2723147 A GB2723147 A GB 2723147A GB 636272 A GB636272 A GB 636272A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lug
- arm
- lever
- stop
- box
- 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
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/12—Manually actuated calamity alarm transmitting arrangements emergency non-personal manually actuated alarm, activators, e.g. details of alarm push buttons mounted on an infrastructure
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
636,272. Fire alarm systems. STANDARD TELEPHONES & CABLES, Ltd., JACKSON, R., and BATES, E. F. Oct. 10, 1947, No. 27231. [Class'40 (i)] In a signal transmitting mechanism for a fire-alarm street box, the main gear wheel 8 carries two lugs 11, 12, the former normally engaging a spring-biassed pivoted stop-arm 14, and being situated slightly nearer the centre than, and behind, the lug 12, whereby the wheel 8 can only make one revolution on being released ; for even if stop-arm is held up by the pull handle it will engage the lug 12, and on subsequent release the lug 11. The " pullhandle " lever 2 mounted on and outside the box door rocks a lever 3 inside the box which engages an. arm 16 on the stop-lever pinion to release the mechanism. Specification 389,725 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2723147A GB636272A (en) | 1947-10-10 | 1947-10-10 | Improvements in or relating to fire alarm equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2723147A GB636272A (en) | 1947-10-10 | 1947-10-10 | Improvements in or relating to fire alarm equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
GB636272A true GB636272A (en) | 1950-04-26 |
Family
ID=10256242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2723147A Expired GB636272A (en) | 1947-10-10 | 1947-10-10 | Improvements in or relating to fire alarm equipment |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB636272A (en) |
-
1947
- 1947-10-10 GB GB2723147A patent/GB636272A/en not_active Expired
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