GB684390A - An improved trip-free electric circuit breaker - Google Patents

An improved trip-free electric circuit breaker

Info

Publication number
GB684390A
GB684390A GB16740/51A GB1674051A GB684390A GB 684390 A GB684390 A GB 684390A GB 16740/51 A GB16740/51 A GB 16740/51A GB 1674051 A GB1674051 A GB 1674051A GB 684390 A GB684390 A GB 684390A
Authority
GB
United Kingdom
Prior art keywords
circuit
pin
section
breaker
coil
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
GB16740/51A
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.)
Heinemann Electric Co
Original Assignee
Heinemann Electric 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 claimed from US266316A external-priority patent/US2360922A/en
Application filed by Heinemann Electric Co filed Critical Heinemann Electric Co
Publication of GB684390A publication Critical patent/GB684390A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/528—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a toggle or collapsible link between handle and contact arm, e.g. sear pin mechanism
    • 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
    • H01H71/34—Electromagnetic mechanisms having two or more armatures controlled by a common winding
    • H01H71/345—Electromagnetic mechanisms having two or more armatures controlled by a common winding having a delayed movable core and a movable armature

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

684,390. Automatic circuit-breakers. HEINEMANN ELECTRIC CO. Aug. 8, 1947 [April 6, 1939], No. 16740/51. Divided out of 684,311. Class 38 (v) In a circuit-breaker similar to that described in Specification 684,311, the contact-carrying section 8b of the switch arm is connected to a pivoted base portion 8a, and to the operating linkage 13, 20 by a pivot pin 17 engaging in slots 8d in ears 8c of the contact section. The contact section is biased by a coil spring 12a secured to the housing, Fig. 3, or by a spring 12b encircling a headed pin 12c fixed to the portion 8a and extending through an aperture in the section 8b, Fig. 6. The function of the pin- and-slot connection is to enable a wiping action to occur at the contacts and if the contacts should become bonded together, the pin 17 on reaching the end of the slots gives an impact to the contact section 8b to assist in breaking the bond. The circuit breaker in addition to electromagnetic tripping may also have a thermal tripping member comprising a coil 37a of thermostatic metal secured to a shaft 32 and having an end portion which bears against the armature 34a. As the temperature of the circuit-breaker rises the armature is moved by the coil 37a closer to the electromagnet 44-46. Specification 684,327 also is referred to.
GB16740/51A 1939-04-06 1947-08-08 An improved trip-free electric circuit breaker Expired GB684390A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US266316A US2360922A (en) 1939-04-06 1939-04-06 Circuit breaker
US559950A US2623141A (en) 1939-04-06 1944-10-23 Circuit breaker

Publications (1)

Publication Number Publication Date
GB684390A true GB684390A (en) 1952-12-17

Family

ID=26951763

Family Applications (3)

Application Number Title Priority Date Filing Date
GB22246/49A Expired GB684327A (en) 1939-04-06 1947-08-08 Improvements in electric circuit breakers
GB21963/47A Expired GB684311A (en) 1939-04-06 1947-08-08 Improved trip-free electric circuit breaker
GB16740/51A Expired GB684390A (en) 1939-04-06 1947-08-08 An improved trip-free electric circuit breaker

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB22246/49A Expired GB684327A (en) 1939-04-06 1947-08-08 Improvements in electric circuit breakers
GB21963/47A Expired GB684311A (en) 1939-04-06 1947-08-08 Improved trip-free electric circuit breaker

Country Status (2)

Country Link
US (1) US2623141A (en)
GB (3) GB684327A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942083A (en) * 1956-12-24 1960-06-21 Westinghouse Electric Corp Circuit interrupters
US3517354A (en) * 1968-08-15 1970-06-23 Ite Imperial Corp High sensitivity magnetic trip unit
US4743878A (en) * 1985-05-01 1988-05-10 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter
FR2649826B1 (en) * 1989-07-11 1995-11-24 Merlin Gerin CONTROL MECHANISM FOR ELECTRIC CIRCUIT BREAKER

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1789058A (en) * 1931-01-13 Attachment for spfjng
US1231412A (en) * 1914-07-13 1917-06-26 Gen Electric Electromagnetic switch.
US1640086A (en) * 1925-12-12 1927-08-23 Elliott Frank Motor-control mechanism
DE591830C (en) * 1930-03-18 1934-01-27 Siemens Ag Circuit breaker, especially with tripping by an earth fault relay
US1890822A (en) * 1930-06-20 1932-12-13 Niagara Falls Smelting & Refin Contact device
US1960402A (en) * 1931-10-09 1934-05-29 Heinemann Electric Co Switch and circuit breaker
US1976934A (en) * 1932-10-11 1934-10-16 Ite Circuit Breaker Ltd Circuit controlling device
US2025697A (en) * 1933-04-22 1935-12-24 Westinghouse Electric & Mfg Co Circuit interrupter
US2000442A (en) * 1934-05-15 1935-05-07 Ite Circuit Breaker Ltd Electric circuit interrupter
US2360922A (en) * 1939-04-06 1944-10-24 Heinemann Circuit Breaker Comp Circuit breaker

Also Published As

Publication number Publication date
US2623141A (en) 1952-12-23
GB684311A (en) 1952-12-17
GB684327A (en) 1952-12-17

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