GB314463A - Improvements in automatic and semi-automatic telephone systems - Google Patents

Improvements in automatic and semi-automatic telephone systems

Info

Publication number
GB314463A
GB314463A GB937228A GB937228A GB314463A GB 314463 A GB314463 A GB 314463A GB 937228 A GB937228 A GB 937228A GB 937228 A GB937228 A GB 937228A GB 314463 A GB314463 A GB 314463A
Authority
GB
United Kingdom
Prior art keywords
letter
register
thousands
offices
wiper
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
GB937228A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB937228A priority Critical patent/GB314463A/en
Priority to FR664862D priority patent/FR664862A/en
Publication of GB314463A publication Critical patent/GB314463A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

314,463. Standard Telephones & Cables, Ltd., and Wright, E. P. G. March 28, 1928. Automatic exchange systems. A code-translating register controller is designed to deal with single-letter and two-letter name codes, the single-letter offices having one or more thousands groups (corresponding to the second letters of the twoletter offices with the same first letter) omitted. Relay A repeats the digits over a dialling relay C which energizes the back stroke magnet DD of the digit distributor. If the first two digits are those of a two-letter office, the register controller operates in the ordinary way. In the case of single-letter offices, however, a circuit is made over an extra wiper 1 on the office register W for CR which locks up, causes DD to skip its 3rd position and the thousands register M to move to the position marked by a further additional wiper 2 where it is stopped by CS. Alternatively wiper 2 may be made to control transmission of the thousands digit directly, in which case CR initiates transmission of the route code, which in the arrangement shown waits for the thousands register to move off-normal.
GB937228A 1928-03-28 1928-03-28 Improvements in automatic and semi-automatic telephone systems Expired GB314463A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB937228A GB314463A (en) 1928-03-28 1928-03-28 Improvements in automatic and semi-automatic telephone systems
FR664862D FR664862A (en) 1928-03-28 1928-11-30 Improvements to automatic or semi-automatic telephone systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB937228A GB314463A (en) 1928-03-28 1928-03-28 Improvements in automatic and semi-automatic telephone systems

Publications (1)

Publication Number Publication Date
GB314463A true GB314463A (en) 1929-06-28

Family

ID=9870692

Family Applications (1)

Application Number Title Priority Date Filing Date
GB937228A Expired GB314463A (en) 1928-03-28 1928-03-28 Improvements in automatic and semi-automatic telephone systems

Country Status (2)

Country Link
FR (1) FR664862A (en)
GB (1) GB314463A (en)

Also Published As

Publication number Publication date
FR664862A (en) 1929-09-11

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