GB1183936A - Improvements in or relating to Alarm Apparatus - Google Patents

Improvements in or relating to Alarm Apparatus

Info

Publication number
GB1183936A
GB1183936A GB3094666A GB3094666A GB1183936A GB 1183936 A GB1183936 A GB 1183936A GB 3094666 A GB3094666 A GB 3094666A GB 3094666 A GB3094666 A GB 3094666A GB 1183936 A GB1183936 A GB 1183936A
Authority
GB
United Kingdom
Prior art keywords
relating
strip
alarm apparatus
madewel
heading
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
GB3094666A
Inventor
Norman Holland
Lawrence William Pollard
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.)
MADEWEL PRODUCTS Ltd
Original Assignee
MADEWEL PRODUCTS Ltd
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 MADEWEL PRODUCTS Ltd filed Critical MADEWEL PRODUCTS Ltd
Priority to GB3094666A priority Critical patent/GB1183936A/en
Publication of GB1183936A publication Critical patent/GB1183936A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/04—Mechanical actuation by breaking of glass
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
    • H01H2003/0233—Emergency operating parts, e.g. for stop-switch in dangerous conditions for alarm triggering, e.g. fire alarm, emergency off switches operated by breaking a glass

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Basic Packing Technique (AREA)

Abstract

1,183,936. Cases for switches. MADEWEL PRODUCTS Ltd. 18 April, 1967 [9 July, 1966], No. 30946/66. Heading H1N. An alarm switch is operated by striking a boss 15 carried by a spring strip 13 so that projections 16a break glass 11 and allow spring biased plunger 12 to rise and actuate contacts. The strip may be secured in slots in the casing or, as shown by bolts.
GB3094666A 1966-07-09 1967-07-09 Improvements in or relating to Alarm Apparatus Expired GB1183936A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3094666A GB1183936A (en) 1966-07-09 1967-07-09 Improvements in or relating to Alarm Apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3094666A GB1183936A (en) 1966-07-09 1967-07-09 Improvements in or relating to Alarm Apparatus

Publications (1)

Publication Number Publication Date
GB1183936A true GB1183936A (en) 1970-03-11

Family

ID=10315583

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3094666A Expired GB1183936A (en) 1966-07-09 1967-07-09 Improvements in or relating to Alarm Apparatus

Country Status (1)

Country Link
GB (1) GB1183936A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS532658U (en) * 1976-06-28 1978-01-11
US4554424A (en) * 1983-05-27 1985-11-19 Minnesota Mining And Manufacturing Co. Electrical switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS532658U (en) * 1976-06-28 1978-01-11
US4554424A (en) * 1983-05-27 1985-11-19 Minnesota Mining And Manufacturing Co. Electrical switch

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees