GB225932A - Improvements in electric switching apparatus suitable for use in telephony - Google Patents

Improvements in electric switching apparatus suitable for use in telephony

Info

Publication number
GB225932A
GB225932A GB2281123A GB2281123A GB225932A GB 225932 A GB225932 A GB 225932A GB 2281123 A GB2281123 A GB 2281123A GB 2281123 A GB2281123 A GB 2281123A GB 225932 A GB225932 A GB 225932A
Authority
GB
United Kingdom
Prior art keywords
contacts
telephony
common
switching apparatus
apparatus suitable
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
GB2281123A
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.)
Relay Automatic Telephone Company Ltd
Original Assignee
Relay Automatic Telephone Company 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 Relay Automatic Telephone Company Ltd filed Critical Relay Automatic Telephone Company Ltd
Priority to GB2281123A priority Critical patent/GB225932A/en
Publication of GB225932A publication Critical patent/GB225932A/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

  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Abstract

225,932. Relay Automatic Telephone Co., Ltd., and Ward, F. M. Sept. 11, 1923. Selectors.-Energization of a magnet m selects a set of contacts C by bringing a resilient member W common to two magnets beneath a blade D so that the contacts are operated upon energization of a common relay M by a bar B on its armature. A. The armature A also controls independent contacts, and the members W carry indicators K. When several relays M are combined, corresponding magnets m are connected in a. common circuit. Specifications 141,005 and 141,006 are referred to.
GB2281123A 1923-09-11 1923-09-11 Improvements in electric switching apparatus suitable for use in telephony Expired GB225932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2281123A GB225932A (en) 1923-09-11 1923-09-11 Improvements in electric switching apparatus suitable for use in telephony

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2281123A GB225932A (en) 1923-09-11 1923-09-11 Improvements in electric switching apparatus suitable for use in telephony

Publications (1)

Publication Number Publication Date
GB225932A true GB225932A (en) 1924-12-11

Family

ID=10185425

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2281123A Expired GB225932A (en) 1923-09-11 1923-09-11 Improvements in electric switching apparatus suitable for use in telephony

Country Status (1)

Country Link
GB (1) GB225932A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499553A (en) * 1946-02-27 1950-03-07 Ericsson Telefon Ab L M Selector
US2577067A (en) * 1948-02-17 1951-12-04 Kellogg Switchboard & Supply Crossbar switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499553A (en) * 1946-02-27 1950-03-07 Ericsson Telefon Ab L M Selector
US2577067A (en) * 1948-02-17 1951-12-04 Kellogg Switchboard & Supply Crossbar switch

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