GB413056A - Improvements in or relating to fire alarm devices - Google Patents

Improvements in or relating to fire alarm devices

Info

Publication number
GB413056A
GB413056A GB532533A GB532533A GB413056A GB 413056 A GB413056 A GB 413056A GB 532533 A GB532533 A GB 532533A GB 532533 A GB532533 A GB 532533A GB 413056 A GB413056 A GB 413056A
Authority
GB
United Kingdom
Prior art keywords
relating
fire alarm
alarm devices
lid
strips
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
Application number
GB532533A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PERCIVAL ROY DICKS
Original Assignee
PERCIVAL ROY DICKS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by PERCIVAL ROY DICKS filed Critical PERCIVAL ROY DICKS
Priority to GB532533A priority Critical patent/GB413056A/en
Publication of GB413056A publication Critical patent/GB413056A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Secondary Cells (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

413,056. Galvanic batteries. DICKS, P. R., 27, Summerlands Avenue, Acton, London. Feb. 21, 1933, No. 5325. [Class 53.] A battery for a portable fire-alarm comprises two flash-lamp cells housed in a box the lid of which carries contact strips 7<a>- 7c for connecting the cells in series to the circuit conductors 6a, 6c, the strips making contact when the lid is closed.
GB532533A 1933-02-21 1933-02-21 Improvements in or relating to fire alarm devices Expired GB413056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB532533A GB413056A (en) 1933-02-21 1933-02-21 Improvements in or relating to fire alarm devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB532533A GB413056A (en) 1933-02-21 1933-02-21 Improvements in or relating to fire alarm devices

Publications (1)

Publication Number Publication Date
GB413056A true GB413056A (en) 1934-07-12

Family

ID=9793984

Family Applications (1)

Application Number Title Priority Date Filing Date
GB532533A Expired GB413056A (en) 1933-02-21 1933-02-21 Improvements in or relating to fire alarm devices

Country Status (1)

Country Link
GB (1) GB413056A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703313A (en) * 1985-08-19 1987-10-27 Omni Signal, Inc. Picket barrier and intrusion sensing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703313A (en) * 1985-08-19 1987-10-27 Omni Signal, Inc. Picket barrier and intrusion sensing system

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