GB205505A - Impulse circuit arrangements for automatic switches or repeaters of the type used intelephone systems - Google Patents

Impulse circuit arrangements for automatic switches or repeaters of the type used intelephone systems

Info

Publication number
GB205505A
GB205505A GB25574/22A GB2557422A GB205505A GB 205505 A GB205505 A GB 205505A GB 25574/22 A GB25574/22 A GB 25574/22A GB 2557422 A GB2557422 A GB 2557422A GB 205505 A GB205505 A GB 205505A
Authority
GB
United Kingdom
Prior art keywords
systems
intelephone
repeaters
type used
circuit arrangements
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
GB25574/22A
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.)
Automatic Telephone Manufacturing Co Ltd
Original Assignee
Automatic Telephone Manufacturing 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 Automatic Telephone Manufacturing Co Ltd filed Critical Automatic Telephone Manufacturing Co Ltd
Publication of GB205505A publication Critical patent/GB205505A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of dc pulses
    • H04Q1/36—Pulse-correcting arrangements, e.g. for reducing effects due to interference

Abstract

205,505. Automatic Telephone Manufacturing Co., (Assignees of Bellamy, J. I.). Oct. 12, 1921, [Convention date]. Drawings to Specification. Automatic exchange systems. - A relay for changing over the circuits of a selector between digits is normally short-circuited by contacts of the line and release relays, but becomes energized at the first impulse of a digit and remains energized as long as the digit continues. The invention is described in connection with the selector circuit shown in Specification 187,207.
GB25574/22A 1921-10-12 1922-08-11 Impulse circuit arrangements for automatic switches or repeaters of the type used intelephone systems Expired GB205505A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US205505XA 1921-10-12 1921-10-12

Publications (1)

Publication Number Publication Date
GB205505A true GB205505A (en) 1923-12-11

Family

ID=21799228

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25574/22A Expired GB205505A (en) 1921-10-12 1922-08-11 Impulse circuit arrangements for automatic switches or repeaters of the type used intelephone systems

Country Status (1)

Country Link
GB (1) GB205505A (en)

Similar Documents

Publication Publication Date Title
GB205505A (en) Impulse circuit arrangements for automatic switches or repeaters of the type used intelephone systems
GB230104A (en) Improvements in or relating to telephone systems
GB183431A (en) Improvements in or relating to telephone systems
GB223399A (en) Impulse circuit arrangements for automatic switches or repeaters of the type used in telephone systems
GB317531A (en) Improvements in or relating to telephone systems
GB188827A (en) Improvements in or relating to telephone systems
GB482014A (en) Improvements relating to telephone systems
GB250037A (en) Improvements in or relating to telephone systems
GB242713A (en) Improvements in automatic telephone systems
GB391446A (en) Improvements in automatic telephone systems
GB306592A (en) Improvements in or relating to telephone systems
GB328120A (en) Improvements in or relating to automatic or semi-automatic telephone systems
GB202308A (en) Circuit arrangements for automatic switches of the type used in telephone systems
GB235064A (en) Improvements in or relating to telephone systems
GB168134A (en) Improvements relating to automatic telephone systems
GB324983A (en) Improvements in or relating to automatic or semi-automatic telephone systems
AU475021A (en) Relay circuit arrangements for use more particularly in telephone or like systems
GB311412A (en) Improvements in impulse circuits particularly for use in automatic telephone systems
AU111921A (en) Improvements in selector switches for automatic telephone systems
GB149816A (en) Improvements in automatic telephone systems
GB339496A (en) Improvements in switching arrangements for automatic and semi-automatic telephone systems
GB296424A (en) Circuit arrangement for double duty selectors in telephone installations
GB301190A (en) Improvements relating to automatic and semi-automatic telephone systems
GB228824A (en) Electric switches for telephone systems
GB285618A (en) Selectors for automatic and semi-automatic telephone systems