GB147464A - Improvements in telegraphy and telephony signalling systems - Google Patents
Improvements in telegraphy and telephony signalling systemsInfo
- 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
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)
- Radar Systems Or Details Thereof (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Emergency Protection Circuit Devices (AREA)
- Transmitters (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.
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) |
-
1919
- 1919-05-29 DE DE1919353373D patent/DE353373C/en not_active Expired
-
1920
- 1920-07-07 GB GB19350/20A patent/GB147447A/en not_active Expired
- 1920-07-07 GB GB19378/20A patent/GB147464A/en not_active Expired
- 1920-10-22 GB GB29931/20A patent/GB154884A/en not_active Expired
-
1921
- 1921-09-02 GB GB23437/21A patent/GB169691A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB169691A (en) | 1922-12-04 |
GB147447A (en) | 1921-04-07 |
DE353373C (en) | 1922-05-16 |
GB154884A (en) | 1921-11-17 |
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