GB1165417A - Alarm System - Google Patents

Alarm System

Info

Publication number
GB1165417A
GB1165417A GB25200/67A GB2520067A GB1165417A GB 1165417 A GB1165417 A GB 1165417A GB 25200/67 A GB25200/67 A GB 25200/67A GB 2520067 A GB2520067 A GB 2520067A GB 1165417 A GB1165417 A GB 1165417A
Authority
GB
United Kingdom
Prior art keywords
alarm
frequency
switch
watchman
actuated
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
GB25200/67A
Inventor
John Raymond Ashley
Colin Grahame Douglas
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.)
Horstmann Gear Co Ltd
Original Assignee
Horstmann Gear Co 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 Horstmann Gear Co Ltd filed Critical Horstmann Gear Co Ltd
Priority to GB25200/67A priority Critical patent/GB1165417A/en
Priority to US733692A priority patent/US3579221A/en
Publication of GB1165417A publication Critical patent/GB1165417A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
    • G07C1/20—Checking timed patrols, e.g. of watchman

Abstract

1,165,417. Alarm system. HORSTMANN GEAR CO. Ltd. 6 March, 1968 [31 May, 1967], No. 25200/67. Heading G4T. [Also in Division H4] An alarm system for use in conjunction with a radio-actuated watchman-location system such as those described in the Specifications 1,165,045 and 1,165,051 comprises an oscillator circuit connected to a watchman's transmitter which causes an alarm frequency to be sent when a switch is operated. An extra frequency filter mounted in the monitoring receiver of the location system responds to the alarm frequency by operating a relay to actuate an alarm. Alternatively the alarm frequency may be transmitted continuously and the alarm is actuated when the frequency is interrupted by a switch. The switch may be a sprung pushbutton which must be kept continuously depressed and which actuates the alarm on being released.
GB25200/67A 1967-05-31 1967-05-31 Alarm System Expired GB1165417A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB25200/67A GB1165417A (en) 1967-05-31 1967-05-31 Alarm System
US733692A US3579221A (en) 1967-05-31 1968-05-31 Alarm system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25200/67A GB1165417A (en) 1967-05-31 1967-05-31 Alarm System

Publications (1)

Publication Number Publication Date
GB1165417A true GB1165417A (en) 1969-10-01

Family

ID=10223852

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25200/67A Expired GB1165417A (en) 1967-05-31 1967-05-31 Alarm System

Country Status (2)

Country Link
US (1) US3579221A (en)
GB (1) GB1165417A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736561A (en) * 1972-03-24 1973-05-29 Honeywell Inc Patrol tour system
US3774193A (en) * 1972-08-24 1973-11-20 T Restrepo Watchman{40 s tour alarm system
US3826900A (en) * 1972-10-13 1974-07-30 Ncr Cordless scanning probe
US3879721A (en) * 1973-09-27 1975-04-22 Robert A Yereance Lock having flexible shackle with severance alarm
FR2433795A1 (en) * 1978-08-17 1980-03-14 Elimex Sa Monitor for route of surveillance personnel - uses portable set with coded transmissions for movement and position detectors which communicate with central monitor
US4300124A (en) * 1980-01-24 1981-11-10 Tulio Vasquez Method of protecting an area and control system for watchman tours
US4296408A (en) * 1980-04-14 1981-10-20 Portronix Communications Inc. Location transmitting system
US4859990A (en) * 1987-04-15 1989-08-22 Linear Corporation Electrically programmable transceiver security system and integrated circuit
CA1271823A (en) * 1988-09-30 1990-07-17 Armand J. Beaudry Pocket alarm
US5045839A (en) * 1990-03-08 1991-09-03 Rand G. Ellis Personnel monitoring man-down alarm and location system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1993436A (en) * 1931-04-21 1935-03-05 Eberhard Heinrich Transmitter device
US2070112A (en) * 1932-10-03 1937-02-09 Bowles Edward Lindley Police-communication system
US3440635A (en) * 1965-06-28 1969-04-22 Harris B Hull Police alarm
US3290597A (en) * 1965-12-08 1966-12-06 Robert Berlin Emergency assistance radio signaling system

Also Published As

Publication number Publication date
US3579221A (en) 1971-05-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee