GB865609A - A safe or strongroom burglar warning system - Google Patents

A safe or strongroom burglar warning system

Info

Publication number
GB865609A
GB865609A GB364760A GB364760A GB865609A GB 865609 A GB865609 A GB 865609A GB 364760 A GB364760 A GB 364760A GB 364760 A GB364760 A GB 364760A GB 865609 A GB865609 A GB 865609A
Authority
GB
United Kingdom
Prior art keywords
strongroom
pressure
radio
super
safe
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
GB364760A
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.)
WILLIAM HENRY RICHES
Original Assignee
WILLIAM HENRY RICHES
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 WILLIAM HENRY RICHES filed Critical WILLIAM HENRY RICHES
Priority to GB364760A priority Critical patent/GB865609A/en
Publication of GB865609A publication Critical patent/GB865609A/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
    • G08B13/20—Actuation by change of fluid pressure

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)

Abstract

865,609. Burglar alarm systems. RICHES, W. H. Feb. 2, 1960, No. 3647/60. Drawings to Specification. Class 118. A substantially constant super-atmospheric pressure is maintained inside a closed safe or strongroom, and an increase or decrease of pressure causes the emission of a radio or telegraph signal. The system is disabled during predetermined periods of time by means of a clock. The alarm signal, controlled by a pressure-sensitive switch, may be sent by carrier transmission over a private telephone line to a police station or may consist of a characteristic train of pulses sent by radio to ring a bell and operate a visual digital indicator in a police station or car. The super-atmospheric pressure is maintained by means of one or more compressed-gas cylinders and/or an air compressor. Specification 735,766 is referred to.
GB364760A 1960-02-02 1960-02-02 A safe or strongroom burglar warning system Expired GB865609A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB364760A GB865609A (en) 1960-02-02 1960-02-02 A safe or strongroom burglar warning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB364760A GB865609A (en) 1960-02-02 1960-02-02 A safe or strongroom burglar warning system

Publications (1)

Publication Number Publication Date
GB865609A true GB865609A (en) 1961-04-19

Family

ID=9762278

Family Applications (1)

Application Number Title Priority Date Filing Date
GB364760A Expired GB865609A (en) 1960-02-02 1960-02-02 A safe or strongroom burglar warning system

Country Status (1)

Country Link
GB (1) GB865609A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128649A (en) * 1982-10-06 1984-05-02 Barrymore George Giddings Barriers with alarm device
WO1987001227A1 (en) * 1985-08-12 1987-02-26 Millar Frederick W Security apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128649A (en) * 1982-10-06 1984-05-02 Barrymore George Giddings Barriers with alarm device
WO1987001227A1 (en) * 1985-08-12 1987-02-26 Millar Frederick W Security apparatus

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