GB334061A - Improvements in fire-alarms - Google Patents

Improvements in fire-alarms

Info

Publication number
GB334061A
GB334061A GB2590529A GB2590529A GB334061A GB 334061 A GB334061 A GB 334061A GB 2590529 A GB2590529 A GB 2590529A GB 2590529 A GB2590529 A GB 2590529A GB 334061 A GB334061 A GB 334061A
Authority
GB
United Kingdom
Prior art keywords
metal
mica
fire
end caps
fusible
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
GB2590529A
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.)
EMANUEL SHULMAN
Original Assignee
EMANUEL SHULMAN
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 EMANUEL SHULMAN filed Critical EMANUEL SHULMAN
Priority to GB2590529A priority Critical patent/GB334061A/en
Publication of GB334061A publication Critical patent/GB334061A/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)
  • Fuses (AREA)

Abstract

334,061. Shulman, E. Aug. 26, 1929. Alarms operated by fusible devices-A fire-alaxm device comprises a tube consisting of an open-ended cylinder a of mica and end caps b<1>, b<2> of metal. Each end cap carries a metal rod supporting a metal cup c<1> which is a close fit within the mica cylinder and contains a fusible metal. The end caps are connected to pin plugs d<1>, d<2> for insertion in a socket base arranged in any suitable alarm circuit. In case of excessive heating, the metal in the cups fuses and runs together, closing the circuit.
GB2590529A 1929-08-26 1929-08-26 Improvements in fire-alarms Expired GB334061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2590529A GB334061A (en) 1929-08-26 1929-08-26 Improvements in fire-alarms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2590529A GB334061A (en) 1929-08-26 1929-08-26 Improvements in fire-alarms

Publications (1)

Publication Number Publication Date
GB334061A true GB334061A (en) 1930-08-28

Family

ID=10235235

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2590529A Expired GB334061A (en) 1929-08-26 1929-08-26 Improvements in fire-alarms

Country Status (1)

Country Link
GB (1) GB334061A (en)

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