GB192284A - Improvements in telephone and signalling systems on electrical transmission lines - Google Patents

Improvements in telephone and signalling systems on electrical transmission lines

Info

Publication number
GB192284A
GB192284A GB320122A GB320122A GB192284A GB 192284 A GB192284 A GB 192284A GB 320122 A GB320122 A GB 320122A GB 320122 A GB320122 A GB 320122A GB 192284 A GB192284 A GB 192284A
Authority
GB
United Kingdom
Prior art keywords
core
telephone
cable
power
additional conductor
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
GB320122A
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.)
Callenders Cable and Construction Co Ltd
Original Assignee
Callenders Cable and Construction 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 Callenders Cable and Construction Co Ltd filed Critical Callenders Cable and Construction Co Ltd
Priority to GB320122A priority Critical patent/GB192284A/en
Publication of GB192284A publication Critical patent/GB192284A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/56—Circuits for coupling, blocking, or by-passing of signals

Abstract

192,284. Kay, C. W., and Callender's Cable & Construction Co., Ltd. Feb. 3,1922. Signalling over power circuits.-In a power Signalling over power circuits.-In a power transmission system in which.the overhead system is connected to the power-stations by a length of cable, this cable is provided with an additional conductor of wire or metallic tape which throughout its length remains as close as possible to one core and as remote as possible from the other or others. In the example shown, the additional conductor b is arranged between the core c and the lead sheath. One end of the conductor at one station is earthed through a telephone q or, according to the Provisional Specification, wireless telephone, and the other end is earthed. Similar arrangements are made at the other station. Signal currents are induced more strongly in one core than in the other so that a current flows round the loop formed by one core and the other or others and induces currents in the additional conductor at the receiver. Specification 7283/91 is referred to.
GB320122A 1922-02-03 1922-02-03 Improvements in telephone and signalling systems on electrical transmission lines Expired GB192284A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB320122A GB192284A (en) 1922-02-03 1922-02-03 Improvements in telephone and signalling systems on electrical transmission lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB320122A GB192284A (en) 1922-02-03 1922-02-03 Improvements in telephone and signalling systems on electrical transmission lines

Publications (1)

Publication Number Publication Date
GB192284A true GB192284A (en) 1923-02-01

Family

ID=9753852

Family Applications (1)

Application Number Title Priority Date Filing Date
GB320122A Expired GB192284A (en) 1922-02-03 1922-02-03 Improvements in telephone and signalling systems on electrical transmission lines

Country Status (1)

Country Link
GB (1) GB192284A (en)

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