GB147464A - Improvements in telegraphy and telephony signalling systems - Google Patents

Improvements in telegraphy and telephony signalling systems

Info

Publication number
GB147464A
GB147464A GB19378/20A GB1937820A GB147464A GB 147464 A GB147464 A GB 147464A GB 19378/20 A GB19378/20 A GB 19378/20A GB 1937820 A GB1937820 A GB 1937820A GB 147464 A GB147464 A GB 147464A
Authority
GB
United Kingdom
Prior art keywords
mains
conductors
telegraphy
signalling systems
bridging
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
GB19378/20A
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.)
Telefunken AG
Original Assignee
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
Publication of GB147464A publication Critical patent/GB147464A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Transmitters (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

147,464. Ges. f³r Drahtlose Telegraphie. May 28, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Electric osciliations in line wires, signalling by. -In high-frequency telegraph and telephone systems utilizing power mains or other existing conductors, shunting means are provided for bridging apparatus, machines, &c. connected to the mains, such means comprising single or multiple conductors arranged parallel and adjacent to the mains, but insulated therefrom. The bridging conductors may be carried on the same posts as the mains.
GB19378/20A 1919-05-29 1920-07-07 Improvements in telegraphy and telephony signalling systems Expired GB147464A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE353373T 1919-05-29

Publications (1)

Publication Number Publication Date
GB147464A true GB147464A (en) 1921-11-07

Family

ID=33480561

Family Applications (4)

Application Number Title Priority Date Filing Date
GB19350/20A Expired GB147447A (en) 1919-05-29 1920-07-07 Improvements in or relating to the conveyance and distribution of high frequency electric currents
GB19378/20A Expired GB147464A (en) 1919-05-29 1920-07-07 Improvements in telegraphy and telephony signalling systems
GB29931/20A Expired GB154884A (en) 1919-05-29 1920-10-22 Improvements in or relating to the transmission of high frequency oscillations over high power conductors for high frequency telegraphy and telephony
GB23437/21A Expired GB169691A (en) 1919-05-29 1921-09-02 Improvements in high frequency telegraphy and telephony

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB19350/20A Expired GB147447A (en) 1919-05-29 1920-07-07 Improvements in or relating to the conveyance and distribution of high frequency electric currents

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB29931/20A Expired GB154884A (en) 1919-05-29 1920-10-22 Improvements in or relating to the transmission of high frequency oscillations over high power conductors for high frequency telegraphy and telephony
GB23437/21A Expired GB169691A (en) 1919-05-29 1921-09-02 Improvements in high frequency telegraphy and telephony

Country Status (2)

Country Link
DE (1) DE353373C (en)
GB (4) GB147447A (en)

Also Published As

Publication number Publication date
GB147447A (en) 1921-04-07
GB154884A (en) 1921-11-17
DE353373C (en) 1922-05-16
GB169691A (en) 1922-12-04

Similar Documents

Publication Publication Date Title
GB147464A (en) Improvements in telegraphy and telephony signalling systems
GB600254A (en) Improvements in or relating to multiplex electric pulse communication systems
US1477528A (en) Signaling
GB379796A (en) Improvements in or relating to high frequency electrical transmission lines
FR2254160A1 (en) Coupling device for carrier systems - esp. for systems using insulated overhead earthing conductors in HV transmission lines
GB304773A (en) Improvements in or relating to automatic switches for use in telephone or like systems
AT315277B (en) Conductor connector for solderless connection of electrical, insulated conductors, in particular for telecommunication lines
GB130901A (en) Improved Means for Securing Electric Conducting Wires to their Insulators.
AU191826A (en) Improved pole for carrying electric cables, telegraph' and telephone wires and for like purposes
SU773938A1 (en) Device for transmitting and receiving information over low-voltage electric mains lines
GB207197A (en)
GB204719A (en) Improvements in automatic telephony
GB457280A (en) Improvements in or relating to electric communication cables
SE99929C1 (en)
AU1868424A (en) An improved pole for carrying electric cables, telegraph and telephone wires andother purposes
CA211982A (en) Insulated support for electrical conductors
CA211980A (en) Insulated support for electrical conductors
CA211859A (en) Insulated support for electrical conductors
CA211861A (en) Insulated support for electrical conductors
CA211860A (en) Insulated support for electrical conductors
CA211979A (en) Insulated support for electrical conductors
GB269996A (en) Improvements relating to electric signalling systems employing carrier waves
CA224507A (en) Terminal pipe connection for electrical conductors
GB176827A (en) Method of cable signalling
CA267053A (en) Insulation for electrical conductors