GB205251A - Improvements in burglar alarm systems of the closed circuit type - Google Patents

Improvements in burglar alarm systems of the closed circuit type

Info

Publication number
GB205251A
GB205251A GB2073722A GB2073722A GB205251A GB 205251 A GB205251 A GB 205251A GB 2073722 A GB2073722 A GB 2073722A GB 2073722 A GB2073722 A GB 2073722A GB 205251 A GB205251 A GB 205251A
Authority
GB
United Kingdom
Prior art keywords
closed circuit
circuit type
burglar alarm
alarm systems
wires
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
GB2073722A
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
Priority to GB2073722A priority Critical patent/GB205251A/en
Publication of GB205251A publication Critical patent/GB205251A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
    • G08B13/126—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a housing, e.g. a box, a safe, or a room

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Alarm Devices (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

205,251. Carpenter, G. B. April 5, 1923. Burglar alarms.-In a burglar alarm system of the closed circuit type in which wires b, c are led in pains and parallel to one another over a structure to be protected to an alarm relay d, which is de-energized by cutting or shortcircuiting of the wires, a resistance e is placed in series close to the battery.
GB2073722A 1923-04-05 1923-04-05 Improvements in burglar alarm systems of the closed circuit type Expired GB205251A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2073722A GB205251A (en) 1923-04-05 1923-04-05 Improvements in burglar alarm systems of the closed circuit type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2073722A GB205251A (en) 1923-04-05 1923-04-05 Improvements in burglar alarm systems of the closed circuit type

Publications (1)

Publication Number Publication Date
GB205251A true GB205251A (en) 1923-10-18

Family

ID=10150799

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2073722A Expired GB205251A (en) 1923-04-05 1923-04-05 Improvements in burglar alarm systems of the closed circuit type

Country Status (1)

Country Link
GB (1) GB205251A (en)

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