GB190925407A - Improvements in Inductive Wireless Telephone Systems. - Google Patents

Improvements in Inductive Wireless Telephone Systems.

Info

Publication number
GB190925407A
GB190925407A GB190925407DA GB190925407A GB 190925407 A GB190925407 A GB 190925407A GB 190925407D A GB190925407D A GB 190925407DA GB 190925407 A GB190925407 A GB 190925407A
Authority
GB
United Kingdom
Prior art keywords
framework
inductive
wireless telephone
telephone systems
trains
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
Inventor
Hans Von Kramer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190925407A publication Critical patent/GB190925407A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive loop type

Abstract

25,407. Kramer, H. von. Nov. 4. Inductive telephony on railways. - In inductive telephone apparatus designed for communication between trains and other moving vehicles, and between trains and fixed stations, the train carries a framework of wires a<1>, a<2>, a<3>, a<4> with battery and telephone instrument, and a fixed conductor b<1> is arranged near the rails. The parts a<1> of the framework are parallel, and the other parts are twisted as shown. The fixed conductor may be crossed to prevent induction from other lines. The framework carried by the train is connected to a transmitter or receiver alternately by means of a switch. Specifications 14,496/84 and 16,735/84 are referred to.
GB190925407D 1909-11-04 1909-11-04 Improvements in Inductive Wireless Telephone Systems. Expired GB190925407A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190925407T 1909-11-04

Publications (1)

Publication Number Publication Date
GB190925407A true GB190925407A (en) 1910-11-03

Family

ID=32558842

Family Applications (2)

Application Number Title Priority Date Filing Date
GB190925407D Expired GB190925407A (en) 1909-11-04 1909-11-04 Improvements in Inductive Wireless Telephone Systems.
GB191021451D Expired GB191021451A (en) 1909-11-04 1910-09-15 Improvements in Inductive Wireless Telephone Installations.

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB191021451D Expired GB191021451A (en) 1909-11-04 1910-09-15 Improvements in Inductive Wireless Telephone Installations.

Country Status (2)

Country Link
FR (1) FR421957A (en)
GB (2) GB190925407A (en)

Also Published As

Publication number Publication date
GB191021451A (en) 1911-03-02
FR421957A (en) 1911-03-09

Similar Documents

Publication Publication Date Title
GB190925407A (en) Improvements in Inductive Wireless Telephone Systems.
US1189317A (en) Inductive telephone installation.
US2515855A (en) Means for by-passing a fault of a line circuit and for telephoning to railway trains
US2029396A (en) Apparatus for communication systems
US1499438A (en) System of communication with moving vehicles
US2240676A (en) Train telephone system
GB189820685A (en) An Improved Coupling for Electrical Communication Apparatus between parts of Railway Trains.
US2019166A (en) Electric train signaling system
US1350291A (en) Telephonic apparatus
US2024664A (en) Railway train operating system
US486634A (en) And ezra t
US2309747A (en) Transmitting apparatus for railway train communicating systems
US350235A (en) Railway-telegraphy
US542916A (en) Alejandro basanta y baque
US2111647A (en) Apparatus for railway train communication systems
US216716A (en) Improvement in railroad-car telegraphs
US2251575A (en) Apparatus for railway train communication systems
US2550957A (en) Means for increasing the range of inductive train communication systems
US1308910A (en) Train-telephone system
US873839A (en) Automatic signaling device.
US1252427A (en) Transmission system.
US951640A (en) Automatic electric railway-signal.
US2064643A (en) Apparatus for railway train communication systems
US334189A (en) phelps
US917830A (en) Signaling system for railways.