GB1090651A - Two-coordinate lock-out circuits - Google Patents

Two-coordinate lock-out circuits

Info

Publication number
GB1090651A
GB1090651A GB12915/65A GB1291565A GB1090651A GB 1090651 A GB1090651 A GB 1090651A GB 12915/65 A GB12915/65 A GB 12915/65A GB 1291565 A GB1291565 A GB 1291565A GB 1090651 A GB1090651 A GB 1090651A
Authority
GB
United Kingdom
Prior art keywords
contacts
row
relay
column
relays
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
GB12915/65A
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
Publication of GB1090651A publication Critical patent/GB1090651A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H63/00—Details of electrically-operated selector switches
    • H01H63/36—Circuit arrangements for ensuring correct or desired operation and not adapted to a particular application of the selector switch
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Abstract

1,090,651. Automatic exchange systems. STANDARD TELEPHONES & CABLES Ltd. March 26, 1965 [March 31, 1964], No. 12915/65. Heading H4K. A two-co-ordinate relay selector has a crosspoint such as Uij in which relays of a column or row are connected up by selector contacts s to find battery over a series connection of contacts r1 and earth over a series connection of contacts r2 of a column, back contacts of r2 energizing a relay P common to the row so as to lock out all other relays R in the row, and back contacts of a chain of contacts r3 in the row providing a holding earth for the energized R relay. Actuation of all the contacts s of a column results in only one relay R locking up in the column. Actuation of all the contacts s of a row results in the energization of the left-hand-most relay R in a free column since holding earth is supplied from the left over the contact chain r3. The row relays may be governed by a 1 out-of n check circuit.
GB12915/65A 1964-03-31 1965-03-26 Two-coordinate lock-out circuits Expired GB1090651A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6403386A NL6403386A (en) 1964-03-31 1964-03-31

Publications (1)

Publication Number Publication Date
GB1090651A true GB1090651A (en) 1967-11-15

Family

ID=19789687

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12915/65A Expired GB1090651A (en) 1964-03-31 1965-03-26 Two-coordinate lock-out circuits

Country Status (5)

Country Link
US (1) US3366849A (en)
BE (1) BE661797A (en)
CH (1) CH424871A (en)
GB (1) GB1090651A (en)
NL (1) NL6403386A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3445812A (en) * 1965-10-18 1969-05-20 Northern Electric Co Sequence control system and method
US3544989A (en) * 1967-02-20 1970-12-01 William T Maccreadie Judging system for competitive swimming activities
US3597737A (en) * 1968-06-21 1971-08-03 Susquehanna Corp Interlocking switch arrangement
US3593288A (en) * 1968-08-02 1971-07-13 Lanier Electronic Lab Inc Voice dictation-transcription station
US3974401A (en) * 1973-01-10 1976-08-10 Iwasaki Tsushinki Kabushiki Kaisha System for detecting the transmission direction of a signal on a two-way transmission line
FR2245142B1 (en) * 1973-09-20 1979-09-28 Cit Alcatel
US3916380A (en) * 1974-11-06 1975-10-28 Nasa Multi-computer multiple data path hardware exchange system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2594389A (en) * 1948-08-04 1952-04-29 Bell Telephone Labor Inc Double-lockout interconnecting system
US2542672A (en) * 1948-10-27 1951-02-20 Bell Telephone Labor Inc Coordinate selecting and lockout circuit
US2562100A (en) * 1948-11-17 1951-07-24 Bell Telephone Labor Inc Coordinate selecting and lock-out circuit
US2578701A (en) * 1949-09-15 1951-12-18 Bell Telephone Labor Inc Coordinate selecting and lockout circuit

Also Published As

Publication number Publication date
US3366849A (en) 1968-01-30
BE661797A (en) 1965-09-30
NL6403386A (en) 1965-10-01
CH424871A (en) 1966-11-30

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