GB471194A - Improvements in electric signalling systems - Google Patents

Improvements in electric signalling systems

Info

Publication number
GB471194A
GB471194A GB6196/36A GB619636A GB471194A GB 471194 A GB471194 A GB 471194A GB 6196/36 A GB6196/36 A GB 6196/36A GB 619636 A GB619636 A GB 619636A GB 471194 A GB471194 A GB 471194A
Authority
GB
United Kingdom
Prior art keywords
bars
feb
potential
layers
connection
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
GB6196/36A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB471194A publication Critical patent/GB471194A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/525—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using tubes in the switching stages

Abstract

471,194. Automatic exchange systems. TELEFONAKTIEBOLAGET L. M. ERICSSON. Feb. 29, 1936, No. 6196. Convention date, Feb. 17, 1936. [A Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 3, 1936.] [Class 40 (iv)] [Also in Group XL] A gas-filled discharge tube acting as a selector contains alternate layers of parallel horizontal bars and parallel vertical wires connected respectively, for example, to links SN and subscribers' lines AB, connections being established by applying an appropriate potential H to the bars and closing a loop or ground connection at the substation S. By making the layers of bars and wires slightly divergent upwards, preference will be given to the lowest bar owing to the shorter discharge path. When a connection has been made, the fall of potential in resistances W, W1 marks a link busy. The bars may be formed as concentric rings. Specification 471,193 is referred to.
GB6196/36A 1936-02-17 1936-02-29 Improvements in electric signalling systems Expired GB471194A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE471194X 1936-02-17

Publications (1)

Publication Number Publication Date
GB471194A true GB471194A (en) 1937-08-30

Family

ID=20310328

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6196/36A Expired GB471194A (en) 1936-02-17 1936-02-29 Improvements in electric signalling systems

Country Status (4)

Country Link
US (1) US2182152A (en)
DE (1) DE689398C (en)
GB (1) GB471194A (en)
NL (1) NL51557C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494670A (en) * 1946-04-26 1950-01-17 Rca Corp Electronic discharge device
US2519172A (en) * 1946-08-30 1950-08-15 Rca Corp Control of electron discharge device of area selection type
US2685611A (en) * 1950-12-15 1954-08-03 Ferranti Ltd Positional data transmitting system
BE519943A (en) * 1952-02-13
US2749480A (en) * 1952-11-24 1956-06-05 Ruderfer Martin Apparatus for producing threedimensional visual patterns
BE539937A (en) * 1954-07-20
US2895079A (en) * 1955-08-15 1959-07-14 Ibm Image transmission system
US3156898A (en) * 1961-12-26 1964-11-10 Bell Telephone Labor Inc Translator

Also Published As

Publication number Publication date
NL51557C (en)
DE689398C (en) 1940-03-19
US2182152A (en) 1939-12-05

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