GB555638A - Improvements in or relating to circuit controlling apparatus, and telephone systems including such apparatus - Google Patents

Improvements in or relating to circuit controlling apparatus, and telephone systems including such apparatus

Info

Publication number
GB555638A
GB555638A GB1548141A GB1548141A GB555638A GB 555638 A GB555638 A GB 555638A GB 1548141 A GB1548141 A GB 1548141A GB 1548141 A GB1548141 A GB 1548141A GB 555638 A GB555638 A GB 555638A
Authority
GB
United Kingdom
Prior art keywords
relay
magnet
contacts
falls
contact
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
GB1548141A
Other languages
English (en)
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.)
Kellogg Switchboard and Supply Co
Original Assignee
Kellogg Switchboard and Supply Co
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
Priority to BE444368D priority Critical patent/BE444368A/xx
Priority to US229266A priority patent/US2281564A/en
Application filed by Kellogg Switchboard and Supply Co filed Critical Kellogg Switchboard and Supply Co
Priority to GB1548141A priority patent/GB555638A/en
Publication of GB555638A publication Critical patent/GB555638A/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
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/02—Multi-position wiper switches
    • H01H67/04—Multi-position wiper switches having wipers movable only in one direction for purpose of selection
    • H01H67/06—Rotary switches, i.e. having angularly movable wipers
    • 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

  • Facsimile Transmission Control (AREA)
  • Telephonic Communication Services (AREA)
GB1548141A 1938-09-10 1941-12-01 Improvements in or relating to circuit controlling apparatus, and telephone systems including such apparatus Expired GB555638A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE444368D BE444368A (enrdf_load_stackoverflow) 1941-12-01
US229266A US2281564A (en) 1938-09-10 1938-09-10 Automatic telephone apparatus and circuits
GB1548141A GB555638A (en) 1941-12-01 1941-12-01 Improvements in or relating to circuit controlling apparatus, and telephone systems including such apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1548141A GB555638A (en) 1941-12-01 1941-12-01 Improvements in or relating to circuit controlling apparatus, and telephone systems including such apparatus

Publications (1)

Publication Number Publication Date
GB555638A true GB555638A (en) 1943-09-01

Family

ID=10059889

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1548141A Expired GB555638A (en) 1938-09-10 1941-12-01 Improvements in or relating to circuit controlling apparatus, and telephone systems including such apparatus

Country Status (2)

Country Link
BE (1) BE444368A (enrdf_load_stackoverflow)
GB (1) GB555638A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE444368A (enrdf_load_stackoverflow)

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