GB187993A - Improvements in and relating to electric switches - Google Patents

Improvements in and relating to electric switches

Info

Publication number
GB187993A
GB187993A GB29515/22A GB2951522A GB187993A GB 187993 A GB187993 A GB 187993A GB 29515/22 A GB29515/22 A GB 29515/22A GB 2951522 A GB2951522 A GB 2951522A GB 187993 A GB187993 A GB 187993A
Authority
GB
United Kingdom
Prior art keywords
contact
electromagnet
armature
handle
released
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
GB29515/22A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB187993A publication Critical patent/GB187993A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/26—Electromagnetic mechanisms with windings acting in opposition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/66—Power reset mechanisms
    • H01H71/68—Power reset mechanisms actuated by electromagnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/36—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release
    • H01H73/38—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release reset by lever
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/0253—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch two co-operating contacts actuated independently

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Breakers (AREA)
  • Electromagnets (AREA)
GB29515/22A 1921-10-28 1922-10-28 Improvements in and relating to electric switches Expired GB187993A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US511000A US1560440A (en) 1921-10-28 1921-10-28 Electric switch

Publications (1)

Publication Number Publication Date
GB187993A true GB187993A (en) 1923-07-12

Family

ID=24033060

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29515/22A Expired GB187993A (en) 1921-10-28 1922-10-28 Improvements in and relating to electric switches

Country Status (4)

Country Link
US (1) US1560440A (https=)
BE (1) BE306494A (https=)
FR (1) FR548116A (https=)
GB (1) GB187993A (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068379A (en) * 1957-04-11 1962-12-11 Fed Pacific Electric Co Circuit protective apparatus

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515992A (en) * 1944-06-17 1950-07-18 Milwaukee Gas Specialty Co Thermocouple safety pilot switch
US2601422A (en) * 1947-01-07 1952-06-24 Ite Circuit Breaker Ltd Circuit breaker
US2601483A (en) * 1948-03-16 1952-06-24 Ite Circuit Breaker Ltd Blow open, blow closed circuit breaker system
US2601484A (en) * 1949-11-16 1952-06-24 Ite Circuit Breaker Ltd Blow open, blow closed circuit breaker
US2755355A (en) * 1951-05-11 1956-07-17 Gen Electric High speed circuit breakers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068379A (en) * 1957-04-11 1962-12-11 Fed Pacific Electric Co Circuit protective apparatus

Also Published As

Publication number Publication date
BE306494A (https=)
FR548116A (https=) 1923-01-05
US1560440A (en) 1925-11-03

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