FR395821A - Automatic fire alarm - Google Patents

Automatic fire alarm

Info

Publication number
FR395821A
FR395821A FR395821A FR395821DA FR395821A FR 395821 A FR395821 A FR 395821A FR 395821 A FR395821 A FR 395821A FR 395821D A FR395821D A FR 395821DA FR 395821 A FR395821 A FR 395821A
Authority
FR
France
Prior art keywords
fire alarm
automatic fire
automatic
alarm
fire
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
FR395821A
Other languages
French (fr)
Inventor
Frank Castle
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR395821A publication Critical patent/FR395821A/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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
FR395821A 1908-10-30 1908-10-30 Automatic fire alarm Expired FR395821A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR395821T 1908-10-30

Publications (1)

Publication Number Publication Date
FR395821A true FR395821A (en) 1909-03-19

Family

ID=1440984

Family Applications (1)

Application Number Title Priority Date Filing Date
FR395821A Expired FR395821A (en) 1908-10-30 1908-10-30 Automatic fire alarm

Country Status (1)

Country Link
FR (1) FR395821A (en)

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