GB552694A - Improvements in and relating to electric switches particularly switches for conducting large currents - Google Patents

Improvements in and relating to electric switches particularly switches for conducting large currents

Info

Publication number
GB552694A
GB552694A GB15212/41A GB1521241A GB552694A GB 552694 A GB552694 A GB 552694A GB 15212/41 A GB15212/41 A GB 15212/41A GB 1521241 A GB1521241 A GB 1521241A GB 552694 A GB552694 A GB 552694A
Authority
GB
United Kingdom
Prior art keywords
fingers
contact
conductor
switches
large currents
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
GB15212/41A
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.)
General Electric Co
Original Assignee
General 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 to US367386A priority Critical patent/US2302394A/en
Application filed by General Electric Co filed Critical General Electric Co
Priority to GB15212/41A priority patent/GB552694A/en
Publication of GB552694A publication Critical patent/GB552694A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars

Landscapes

  • Contacts (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

552,694. Switch contacts. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). Nov. 26, 1941, No. 15212. [Class 38 (v)] A switch adapted for large currents comprises two fixed contact members 10, 11 and a series of bridging fingers 12, 13, 14 which bear in a pivotal manner on a cylindrical conductor 18 forming part of the contact 10 and move into and out of engagement with the contact 11. The co-operating surfaces 18, 19 of the conductor 18 and the fingers 12, 13, 14 preferably have different radii of curvature so that a line contact is obtained in each case and the contacts on the fingers are spherical or cylindrical so as to produce point or line contact. By this arrangement, flexible leads to the fingers are dispensed with. The fingers 12, 13, 14 as shown provide main, transfer and arcing contacts respectively and are of different lengths. They are operated by the movement of two pivoted side plates 28 which are connected by three rods 33, 34, 35, and which pivot about axes in line with the axis 18. Springs 36 between the rod 34 and the fingers 12, 13, 14 hold the fingers firmly in engagement with the conductor 18 and other springs 38 provide the contact pressure. The rod 35 passes through holes in the fingers of various sizes so that the fingers are operated in correct sequence.
GB15212/41A 1940-11-27 1941-11-26 Improvements in and relating to electric switches particularly switches for conducting large currents Expired GB552694A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US367386A US2302394A (en) 1940-11-27 1940-11-27 Electric switch
GB15212/41A GB552694A (en) 1940-11-27 1941-11-26 Improvements in and relating to electric switches particularly switches for conducting large currents

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US367386A US2302394A (en) 1940-11-27 1940-11-27 Electric switch
GB15212/41A GB552694A (en) 1940-11-27 1941-11-26 Improvements in and relating to electric switches particularly switches for conducting large currents

Publications (1)

Publication Number Publication Date
GB552694A true GB552694A (en) 1943-04-20

Family

ID=26251139

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15212/41A Expired GB552694A (en) 1940-11-27 1941-11-26 Improvements in and relating to electric switches particularly switches for conducting large currents

Country Status (2)

Country Link
US (1) US2302394A (en)
GB (1) GB552694A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061702A (en) * 1960-10-10 1962-10-30 Gen Electric Movable switch member
US3215803A (en) * 1962-12-31 1965-11-02 Allis Chalmers Mfg Co Contact structure for circuit breaker
DE1249379B (en) * 1964-04-14
US3402274A (en) * 1965-10-01 1968-09-17 Square D Co Contact structure for a power circuit breaker
US3585329A (en) * 1968-01-24 1971-06-15 Westinghouse Electric Corp Circuit interrupter with improved contact structure and arc-runner
US3662134A (en) * 1969-06-11 1972-05-09 Westinghouse Electric Corp Circuit breaker with improved current path and contact means
WO1979000670A1 (en) * 1978-03-01 1979-09-06 Forelec Short-circuiter for high direct currents

Also Published As

Publication number Publication date
US2302394A (en) 1942-11-17

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