GB378586A - Improvements relating to automatic telephone systems - Google Patents

Improvements relating to automatic telephone systems

Info

Publication number
GB378586A
GB378586A GB17234/31A GB1723431A GB378586A GB 378586 A GB378586 A GB 378586A GB 17234/31 A GB17234/31 A GB 17234/31A GB 1723431 A GB1723431 A GB 1723431A GB 378586 A GB378586 A GB 378586A
Authority
GB
United Kingdom
Prior art keywords
selector
wipers
relay
accordance
charlton
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
GB17234/31A
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.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and 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 Siemens Brothers and Co Ltd filed Critical Siemens Brothers and Co Ltd
Priority to GB17234/31A priority Critical patent/GB378586A/en
Priority to US614911A priority patent/US1956371A/en
Publication of GB378586A publication Critical patent/GB378586A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Keying Circuit Devices (AREA)
  • Toys (AREA)

Abstract

378,586. Automatic exchange systems. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, and CHRISTIAN, D. A., Morven, Charlton Road, Charlton, both in London. June 13, 1931, No. 17234. Drawings to Specification. [Class 40 (iv).] In a single-motion selector which has doubleended wipers the ends of which come into engagement with corresponding rows of terminals in turn and which is controlled numericallv by marking, in order to decrease the hunting time a preliminary rotation of the wipers through 180‹ takes place when necessary in accordance with a discrimination effected at the previous selecting stage which takes effect as soon as the selector is seized or in the case of a first selector in accordance with one or the other of two alternative first digits. The preliminary rotation may be dependent on a relay in the line circuit which is short-circuited when one wire is earthed, or the relay may be included in one of the two routes of access to the slector. A group selector with a common control circuit is described which is identical with that shown in Figs. 9 and 10 of Specification 378,585.
GB17234/31A 1931-06-13 1931-06-13 Improvements relating to automatic telephone systems Expired GB378586A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB17234/31A GB378586A (en) 1931-06-13 1931-06-13 Improvements relating to automatic telephone systems
US614911A US1956371A (en) 1931-06-13 1932-06-02 Telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17234/31A GB378586A (en) 1931-06-13 1931-06-13 Improvements relating to automatic telephone systems

Publications (1)

Publication Number Publication Date
GB378586A true GB378586A (en) 1932-08-18

Family

ID=10091593

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17234/31A Expired GB378586A (en) 1931-06-13 1931-06-13 Improvements relating to automatic telephone systems

Country Status (2)

Country Link
US (1) US1956371A (en)
GB (1) GB378586A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2832834A (en) * 1941-04-26 1958-04-29 Nederlanden Staat Signalling arrangement for telecommunication systems
GB593049A (en) * 1945-05-04 1947-10-07 Siemens Brothers & Co Ltd Improvements relating to automatic telephone systems
GB593050A (en) * 1945-05-04 1947-10-07 Siemens Brothers & Co Ltd Improvements relating to automatic telephone systems
GB592989A (en) * 1945-05-04 1947-10-06 Siemens Brothers & Co Ltd Improvements relating to automatic telephone systems
GB592371A (en) * 1945-05-04 1947-09-16 Siemens Brothers & Co Ltd Improvements relating to automatic telephone systems
FR913850A (en) * 1945-08-31 1946-09-20 Constr Telephoniques Improvements to telephone systems
FR996361A (en) * 1948-10-25 1951-12-17
GB657076A (en) * 1948-11-11 1951-09-12 Automatic Telephone & Elect Improvements in or relating to automatic switches as used in telephone systems

Also Published As

Publication number Publication date
US1956371A (en) 1934-04-24

Similar Documents

Publication Publication Date Title
GB378586A (en) Improvements relating to automatic telephone systems
GB389232A (en) Improvements relating to automatic telephone systems
GB479852A (en) Improvements in or relating to automatic or semi-automatic telephone systems
GB405583A (en) Improvements relating to automatic telephone and like selective switching systems
GB386381A (en) Improvements relating to automatic telephone systems
GB385384A (en) Improvements relating to automatic telephone and like selective systems
GB479895A (en) Improvements in or relating to automatic or semi-automatic telephone systems
GB1264389A (en)
GB318956A (en) Improvements in and relating to automatic and semi-automatic exchange systems
CH167967A (en) Installation in automatic telephone systems.
SU29803A1 (en) Fuse to the keyboard disc battery loom system Northrop
GB413065A (en) Improvements relating to automatic telephone systems
GB396520A (en) Improvements in or connected with electric plug-and-socket couplings or the like
GB366959A (en) Improvements in or relating to telephone systems
AU2577430A (en) Circuit arrangements for automatic or semiautomatic telephone exchange systems
GB393662A (en) Improvements in or relating to telegraph exchange systems
GB378587A (en) Improvements relating to automatic telephone systems
GB386189A (en) Improvements in and relating to indicating systems
GB571811A (en) Improvements in or relating to finder switch arrangements for use in telephone or like signalling systems
GB332561A (en) Improvements in or relating to telephone systems
AU2602330A (en) Circuit arrangements for automatic or semiautomatic telephone exchange systems
GB406836A (en) Improvements relating to driving arrangements for stepping switches
AU2577530A (en) Circuit arrangements for automatic or semi-automatic telephone exchange systems
FR739237A (en) Magnet system, especially for circuit breakers
ES122746A1 (en) Improvements in electrical signal transmission systems.