GB557705A - Improvements in or relating to selector switches of the crossbar type as used in automatic telephony - Google Patents

Improvements in or relating to selector switches of the crossbar type as used in automatic telephony

Info

Publication number
GB557705A
GB557705A GB722342A GB722342A GB557705A GB 557705 A GB557705 A GB 557705A GB 722342 A GB722342 A GB 722342A GB 722342 A GB722342 A GB 722342A GB 557705 A GB557705 A GB 557705A
Authority
GB
United Kingdom
Prior art keywords
relating
operated
bars
selector switches
preparing
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
GB722342A
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 and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric 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 and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Priority to GB722342A priority Critical patent/GB557705A/en
Publication of GB557705A publication Critical patent/GB557705A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/22—Switches without multi-position wipers
    • H01H67/26—Co-ordinate-type selector switches not having relays at cross-points but involving mechanical movement, e.g. cross-bar switch, code-bar switch

Landscapes

  • Interface Circuits In Exchanges (AREA)

Abstract

557,705. Automatic exchange switches. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., GILLINGS, C., and MURRAY, L. J. May 28, 1942, No. 7223. [Class 40 (iv)] In a cross-bar switch of known type using preparing bars with flexible selecting fingers, the holding bars 18 have recesses opposite the normal positions of the selecting fingers 16 operated by the preparing bars 17 so that when a holding bar is operated the selecting fingers, other than the one in the selected row, are prevented from moving. Jamming of a finger is thus avoided when another preparing bar is operated.
GB722342A 1942-05-28 1942-05-28 Improvements in or relating to selector switches of the crossbar type as used in automatic telephony Expired GB557705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB722342A GB557705A (en) 1942-05-28 1942-05-28 Improvements in or relating to selector switches of the crossbar type as used in automatic telephony

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB722342A GB557705A (en) 1942-05-28 1942-05-28 Improvements in or relating to selector switches of the crossbar type as used in automatic telephony

Publications (1)

Publication Number Publication Date
GB557705A true GB557705A (en) 1943-12-01

Family

ID=9828985

Family Applications (1)

Application Number Title Priority Date Filing Date
GB722342A Expired GB557705A (en) 1942-05-28 1942-05-28 Improvements in or relating to selector switches of the crossbar type as used in automatic telephony

Country Status (1)

Country Link
GB (1) GB557705A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6802779B2 (en) * 2000-10-27 2004-10-12 Denso Corporation Pulley type torque transmitting apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6802779B2 (en) * 2000-10-27 2004-10-12 Denso Corporation Pulley type torque transmitting apparatus

Similar Documents

Publication Publication Date Title
AU531157B2 (en) Pcm time switch
GB550797A (en) Push-pull electric switch
GB557705A (en) Improvements in or relating to selector switches of the crossbar type as used in automatic telephony
IT7830421A0 (en) CONFERENCE CIRCUIT WITH 3 INPUT, PARTICULARLY FOR USE IN A PRIVATE TELEPHONE EXCHANGE.
GB571520A (en) Improvements relating to electric selective signalling systems
ATA506473A (en) Telephone subscriber handset with push-button selector - uses electronic switching cct. to supply pulse series representing selected numbers
GB757132A (en) Improvements in or relating to switching mechanisms for use in telephone or like systems
JPS548925A (en) Input unit
GB805276A (en) Improvements in or relating to electric switches
GB556921A (en) Improvements in or relating to circuit arrangements for selector switches for use in automatic telephone or like systems
ES386896A1 (en) Automatic telecommunication switching system
ES323017A1 (en) Bar telephone switch. (Machine-translation by Google Translate, not legally binding)
JPS51144509A (en) Switch matrix multi-stage selecting drive system
JPS5271150A (en) Hold type selector switch circuit with priority
ES307420A1 (en) Improvements in and relating to switching networks for use in telecommunication exchanges
ES229777U (en) New multiple switch switch. (Machine-translation by Google Translate, not legally binding)
JPS51144504A (en) Telephone set
GB657658A (en) Improvements in or relating to a switching arrangement comprising crossbar switches
GB556919A (en) Improvements in or relating to the construction of selector switches as used in automatic telephone and like systems
Siṃha Sampūrṇa nibandha
JPS52147908A (en) Switch
GB529026A (en) Improvements in or relating to telephone systems
GB809512A (en) Improvements in or relating to multi-contact, impulse driven, selector switch
GB470008A (en) Improvements in electric signalling or impulse transmitting mechanism
AU145935B2 (en) Switching system for establishing a number of connections by means of one or more multiple switches, for example, for use inan automatic telephone exchange orthe like