GB1156544A - Improvements in or relating to a Message Transmission Apparatus - Google Patents

Improvements in or relating to a Message Transmission Apparatus

Info

Publication number
GB1156544A
GB1156544A GB4395666A GB4395666A GB1156544A GB 1156544 A GB1156544 A GB 1156544A GB 4395666 A GB4395666 A GB 4395666A GB 4395666 A GB4395666 A GB 4395666A GB 1156544 A GB1156544 A GB 1156544A
Authority
GB
United Kingdom
Prior art keywords
visibility
detector
official
substation
alarm
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
GB4395666A
Inventor
David Best
Stanley Shorrock
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.)
Shorrock Developments Ltd
Original Assignee
Shorrock Developments 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 Shorrock Developments Ltd filed Critical Shorrock Developments Ltd
Priority to GB4395666A priority Critical patent/GB1156544A/en
Publication of GB1156544A publication Critical patent/GB1156544A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/012—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using recorded signals, e.g. speech
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
    • H04M11/045—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems using recorded signals, e.g. speech

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

1,156,544. Road signals for controlling traffic. SHORROCK DEVELOPMENTS Ltd. 29 Aug., 1967 [1 Oct., 19661, No. 43956/66. Heading G4Q. [Also in Division H4] A monitoring device at a substation can answer an incoming call, can establish a connection over an automatic telephone exchange in the event of an alarm condition and can select a pick-up associated with an appropriate magnetically recorded message to be transmitted. As described the device monitors visibility on a motorway but could alternatively or additionally be used to monitor the condition of ice or fog warning lamps. The visibility is detected by an infra-red transmitter and receiver spaced apart adjacent the motorway. The detector indicates the visibility level by enabling one out of six lines enabling a corresponding pick-up in the tape unit of a telephone answering device. The detector also gives an output on one of two output lines depending on whether the visibility is above or below a danger limit. A change in this output if it persists for more than two minutes is used to trigger a telephone alarm device and to select an appropriate magnetic tape within that device. The tape carries dialling pulses and a spoken message for a remote official. The telephone alarm device is arranged to re-establish a path through the exchange and transmit the message either a predetermined number of times or until called back by the official. If the official wishes to know the visibility level or if he has received an alarm call and wishes to terminate its transmission he dials the number of the substation. A ringing tone detector at the substation responds silencing the alarm device and enabling the answering device. The answering device transmits a verbal representation of the visibility level then shuts down. The visibility detector also controls a fog warning light and a speed limit indicator. The ringing tone detector may be supplemented by a voice-frequency tone detector which inhibits the operation of the response to a call to the substation until a predetermined tone signal is received from the official.
GB4395666A 1966-10-01 1966-10-01 Improvements in or relating to a Message Transmission Apparatus Expired GB1156544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4395666A GB1156544A (en) 1966-10-01 1966-10-01 Improvements in or relating to a Message Transmission Apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4395666A GB1156544A (en) 1966-10-01 1966-10-01 Improvements in or relating to a Message Transmission Apparatus

Publications (1)

Publication Number Publication Date
GB1156544A true GB1156544A (en) 1969-06-25

Family

ID=10431110

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4395666A Expired GB1156544A (en) 1966-10-01 1966-10-01 Improvements in or relating to a Message Transmission Apparatus

Country Status (1)

Country Link
GB (1) GB1156544A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027351A1 (en) * 1979-10-12 1981-04-22 Rohm And Haas Company Oxidation catalysts and process for the preparation of methacrolein by vapour phase oxidation
GB2144303A (en) * 1983-07-22 1985-02-27 Remote Interrogations Pty Ltd Interrogation device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027351A1 (en) * 1979-10-12 1981-04-22 Rohm And Haas Company Oxidation catalysts and process for the preparation of methacrolein by vapour phase oxidation
GB2144303A (en) * 1983-07-22 1985-02-27 Remote Interrogations Pty Ltd Interrogation device

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