GB529511A - Improvements in or relating to burglar and like alarms - Google Patents

Improvements in or relating to burglar and like alarms

Info

Publication number
GB529511A
GB529511A GB1461739A GB1461739A GB529511A GB 529511 A GB529511 A GB 529511A GB 1461739 A GB1461739 A GB 1461739A GB 1461739 A GB1461739 A GB 1461739A GB 529511 A GB529511 A GB 529511A
Authority
GB
United Kingdom
Prior art keywords
burglar
circuit
alarms
relating
pin
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
GB1461739A
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 GB1461739A priority Critical patent/GB529511A/en
Publication of GB529511A publication Critical patent/GB529511A/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
    • H01H3/14—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for operation by a part of the human body other than the hand, e.g. by foot
    • H01H3/141—Cushion or mat switches

Landscapes

  • Fire Alarms (AREA)

Abstract

529,511. Retractive switches. TIBBLES, H. J., and RELY-A-BELL BURGLAR & FIRE ALARM CO., Ltd. May 16, 1939, No. 14617. [Class 38 (v)] A switch for operating a burglar alarm and actuated, e.g. by a person. ascending a staircase comprises a resiliently-supported plate 1 carrying a pin 5 adapted to actuate a movable contact spring 7. In the form shown this opens a circuit 8, 9. In modifications, actuating pin or pins 5 are surrounded by the supporting springs 3 and a circuit or circuits are closed. The plate 1 may also be hinged.
GB1461739A 1939-05-16 1939-05-16 Improvements in or relating to burglar and like alarms Expired GB529511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1461739A GB529511A (en) 1939-05-16 1939-05-16 Improvements in or relating to burglar and like alarms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1461739A GB529511A (en) 1939-05-16 1939-05-16 Improvements in or relating to burglar and like alarms

Publications (1)

Publication Number Publication Date
GB529511A true GB529511A (en) 1940-11-22

Family

ID=10044464

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1461739A Expired GB529511A (en) 1939-05-16 1939-05-16 Improvements in or relating to burglar and like alarms

Country Status (1)

Country Link
GB (1) GB529511A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3298012A (en) * 1964-09-23 1967-01-10 Weller Newton Ladder warning device
US3696372A (en) * 1970-09-21 1972-10-03 Leo Lawrence Garrett Ladder warning device
GB2117179A (en) * 1982-03-18 1983-10-05 Paul Graham Usher Entry signal system for pets
FR2590534A1 (en) * 1985-11-27 1987-05-29 Soule Sa INSTALLATION FOR DETECTING PRESENCE ON A GUIDE TRACK OF A VEHICLE

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3298012A (en) * 1964-09-23 1967-01-10 Weller Newton Ladder warning device
US3696372A (en) * 1970-09-21 1972-10-03 Leo Lawrence Garrett Ladder warning device
GB2117179A (en) * 1982-03-18 1983-10-05 Paul Graham Usher Entry signal system for pets
FR2590534A1 (en) * 1985-11-27 1987-05-29 Soule Sa INSTALLATION FOR DETECTING PRESENCE ON A GUIDE TRACK OF A VEHICLE
US4771698A (en) * 1985-11-27 1988-09-20 Soule Sensing system for a tracked vehicle transportation system

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