GB228730A - Improvements relating to burglar alarms - Google Patents

Improvements relating to burglar alarms

Info

Publication number
GB228730A
GB228730A GB586624A GB586624A GB228730A GB 228730 A GB228730 A GB 228730A GB 586624 A GB586624 A GB 586624A GB 586624 A GB586624 A GB 586624A GB 228730 A GB228730 A GB 228730A
Authority
GB
United Kingdom
Prior art keywords
improvements relating
burglar alarms
shutter
boards
window
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
GB586624A
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 GB586624A priority Critical patent/GB228730A/en
Publication of GB228730A publication Critical patent/GB228730A/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)
  • Burglar Alarm Systems (AREA)

Abstract

228,730. Carpenter, G. B. March 7, 1924. Window-shutters.-A shutter c adapted to be secured over a window aperture consists of two thin multi-ply boards with the wiring of a burglar alarm circuit enclosed between them. The wire may be in grooves in one of the boards. The shutter may be supported on brackets d and secured by catches e.
GB586624A 1924-03-07 1924-03-07 Improvements relating to burglar alarms Expired GB228730A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB586624A GB228730A (en) 1924-03-07 1924-03-07 Improvements relating to burglar alarms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB586624A GB228730A (en) 1924-03-07 1924-03-07 Improvements relating to burglar alarms

Publications (1)

Publication Number Publication Date
GB228730A true GB228730A (en) 1925-02-12

Family

ID=9804076

Family Applications (1)

Application Number Title Priority Date Filing Date
GB586624A Expired GB228730A (en) 1924-03-07 1924-03-07 Improvements relating to burglar alarms

Country Status (1)

Country Link
GB (1) GB228730A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2229564A (en) * 1989-02-21 1990-09-26 Leslie Hancock Security blind
EP2143865A2 (en) 2008-07-10 2010-01-13 Sommer Metallbau-Stahlbau GmbH & Co. KG Object protective door

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2229564A (en) * 1989-02-21 1990-09-26 Leslie Hancock Security blind
GB2229564B (en) * 1989-02-21 1993-08-04 Leslie Hancock Security blind
EP2143865A2 (en) 2008-07-10 2010-01-13 Sommer Metallbau-Stahlbau GmbH & Co. KG Object protective door
EP2143865A3 (en) * 2008-07-10 2011-12-07 Sommer Metallbau-Stahlbau GmbH & Co. KG Object protective door

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