GB292649A - Improvements to electric burglar alarms - Google Patents

Improvements to electric burglar alarms

Info

Publication number
GB292649A
GB292649A GB656927A GB656927A GB292649A GB 292649 A GB292649 A GB 292649A GB 656927 A GB656927 A GB 656927A GB 656927 A GB656927 A GB 656927A GB 292649 A GB292649 A GB 292649A
Authority
GB
United Kingdom
Prior art keywords
burglar alarms
bell
outer cover
burglar
electric burglar
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
GB656927A
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.)
HENRY JOHN TIBBLES
Rely A Bell Burglar & Fire Ala
Original Assignee
HENRY JOHN TIBBLES
Rely A Bell Burglar & Fire Ala
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 HENRY JOHN TIBBLES, Rely A Bell Burglar & Fire Ala filed Critical HENRY JOHN TIBBLES
Priority to GB656927A priority Critical patent/GB292649A/en
Publication of GB292649A publication Critical patent/GB292649A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)

Abstract

292,649. Tibbles, H. J., and Rely-a- Bell Burglar & Fire Alarm Co., Ltd. March 9, 1927. Burglar alarms have the bell &c. protected by an inner and an outer cover, the latter of which is included in the protective circuit of the system so that its removal sets the alarm into operation. In the construction shown the outer cover 4 carries a block of wood 8 having copper strips secured on it at 9 and engaging contact strips 10 of the construction described in Specification 288,743. The top of the cover 4 is arranged obliquely to prevent rain water lodging on it.
GB656927A 1927-03-09 1927-03-09 Improvements to electric burglar alarms Expired GB292649A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB656927A GB292649A (en) 1927-03-09 1927-03-09 Improvements to electric burglar alarms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB656927A GB292649A (en) 1927-03-09 1927-03-09 Improvements to electric burglar alarms

Publications (1)

Publication Number Publication Date
GB292649A true GB292649A (en) 1928-06-11

Family

ID=9816881

Family Applications (1)

Application Number Title Priority Date Filing Date
GB656927A Expired GB292649A (en) 1927-03-09 1927-03-09 Improvements to electric burglar alarms

Country Status (1)

Country Link
GB (1) GB292649A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2152721A (en) * 1984-01-14 1985-08-07 John Michael Loftus Intruder alarm apparatus
GB2210718A (en) * 1987-10-09 1989-06-14 David Saunders High security alarm bell box

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2152721A (en) * 1984-01-14 1985-08-07 John Michael Loftus Intruder alarm apparatus
GB2210718A (en) * 1987-10-09 1989-06-14 David Saunders High security alarm bell box
GB2210718B (en) * 1987-10-09 1991-06-12 David Saunders High security bell box

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