GB191224037A - Improvements in Signalling InstallationS more particularly adapted for Fire Alarms. - Google Patents

Improvements in Signalling InstallationS more particularly adapted for Fire Alarms.

Info

Publication number
GB191224037A
GB191224037A GB191224037DA GB191224037A GB 191224037 A GB191224037 A GB 191224037A GB 191224037D A GB191224037D A GB 191224037DA GB 191224037 A GB191224037 A GB 191224037A
Authority
GB
United Kingdom
Prior art keywords
circuit
switch
lead
armature
over
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
Other languages
English (en)
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.)
Siemens and Halske AG
Original Assignee
Siemens and Halske AG
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 Siemens and Halske AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of GB191224037A publication Critical patent/GB191224037A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/16—Security signalling or alarm systems, e.g. redundant systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Locating Faults (AREA)
  • Alarm Systems (AREA)
GB191224037D 1911-10-21 1912-10-21 Improvements in Signalling InstallationS more particularly adapted for Fire Alarms. Expired GB191224037A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE191224037X 1911-10-21

Publications (1)

Publication Number Publication Date
GB191224037A true GB191224037A (en) 1913-06-12

Family

ID=32522628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191224037D Expired GB191224037A (en) 1911-10-21 1912-10-21 Improvements in Signalling InstallationS more particularly adapted for Fire Alarms.

Country Status (2)

Country Link
DE (1) DE264623C (https=)
GB (1) GB191224037A (https=)

Also Published As

Publication number Publication date
DE264623C (https=)

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