GB533690A - Improvements in electric circuit interrupters - Google Patents

Improvements in electric circuit interrupters

Info

Publication number
GB533690A
GB533690A GB30110/39A GB3011039A GB533690A GB 533690 A GB533690 A GB 533690A GB 30110/39 A GB30110/39 A GB 30110/39A GB 3011039 A GB3011039 A GB 3011039A GB 533690 A GB533690 A GB 533690A
Authority
GB
United Kingdom
Prior art keywords
mercury
carbon
circuit
nov
electrode
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
GB30110/39A
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation 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
Application filed by Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB533690A publication Critical patent/GB533690A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H29/00Switches having at least one liquid contact
    • H01H29/30Switches having at least one liquid contact with level of surface of contact liquid displaced by expansion or evaporation thereof

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

533,690. Mercury switches. GENERAL MOTORS CORPORATION. Nov. 15, 1939, No. 30110. Convention date. Nov. 19, 1938. [Class 38 (v)] A device adapted to provide continuous interruption for a low voltage D.C. circuit comprises an electrode 6 of relatively high resistivity such as carbon arranged in a glass vessel 4 with a small hole 8 at the bottom where the carbon extends into contact with mercury 10 in a surrounding vessel; current passing through the carbon and mercury in series causes momentary volatilization of the mercury at the neck 8 and consequent interruption of the circuit, whereupon the vapour recondenses and the circuit is remade. The arrangement shown functions whatever the position of the vessels. In a modification, a pool of mercury is arranged over the carbon for the electrode 14 to dip into.
GB30110/39A 1938-11-19 1939-11-15 Improvements in electric circuit interrupters Expired GB533690A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US241384A US2225969A (en) 1938-11-19 1938-11-19 Mercury interrupter

Publications (1)

Publication Number Publication Date
GB533690A true GB533690A (en) 1941-02-18

Family

ID=22910496

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30110/39A Expired GB533690A (en) 1938-11-19 1939-11-15 Improvements in electric circuit interrupters

Country Status (3)

Country Link
US (1) US2225969A (en)
FR (1) FR861908A (en)
GB (1) GB533690A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449439A (en) * 1946-11-01 1948-09-14 Gen Motors Corp Mercury interrupter

Also Published As

Publication number Publication date
US2225969A (en) 1940-12-24
FR861908A (en) 1941-02-21

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