US1930092A - Mercury switch - Google Patents

Mercury switch Download PDF

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Publication number
US1930092A
US1930092A US359652A US35965229A US1930092A US 1930092 A US1930092 A US 1930092A US 359652 A US359652 A US 359652A US 35965229 A US35965229 A US 35965229A US 1930092 A US1930092 A US 1930092A
Authority
US
United States
Prior art keywords
mercury
tube
enlargements
electrodes
mercury switch
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 - Lifetime
Application number
US359652A
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English (en)
Inventor
Hatay Charles
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
Application filed by General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US1930092A publication Critical patent/US1930092A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H29/00—Switches having at least one liquid contact
    • H01H29/20—Switches having at least one liquid contact operated by tilting contact-liquid container
    • H01H29/24—Switches having at least one liquid contact operated by tilting contact-liquid container wherein contact is made and broken between liquid and liquid

Definitions

  • I My invention refers to mercury switches andhas for its particular purpose to provide means whereby such switches are rendered more resistive andmore eflicient than similar switches 5 hitherto devised.
  • the outer tube which may be a closed glass tube, and into which extend two electrodes, is formed with two bulging portions or circumferential 1o enlargements, designed to replace the small cups filled with mercury, into which dip the electrodes of mercury switches as hitherto designed.
  • the new form of glass tube ofiers quite a number of advantages.
  • the circumferential enlargements of the tube act after the manner of stifiening or reinforcing ribs and all inner strains resulting at the'points where the cups were formerly fixed to the glass tube are avoided.
  • these enlargements offer the advantage that a mercury body of considerable width is formed therein, which ofifers a large contact sur-- face.
  • the electrodes are in contact with the mercury in these enlargements over a considerable part of their length, whereby the resistance is reduced.
  • the electrodes can further be intro.-
  • Fig. 1 is an axial section
  • Fig. 2 is a cross section on the line 2-2 in Fig. 1.
  • 1 is the glass tube and 2 and 3 are two circumferential enlargements formed in the wall of the tube.
  • 4 and 5 are the two electrodes extending into the tube from one end thereof. The free ends of the electrodes are bent through partof a circle as "shown in Fig. 2, and are substantially immersed in the mercury filling these enlargements.
  • a tilting mercury switch comprising a tube having a substantially horizontal axis, mercury in said tube, two inleads sealed through one end of said tube, a circumferential enlargement in the wall of said tube near said end, and a second circumferential enlargement in the wall of said tube, near the midpoint thereof, each of said enlargements having a depth such that a pool of. said mercury is retained thereby at all operative positions of said switch, each of said inleads extending circumferentially into one of said enlargements and terminating in one of said pools.

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  • Vessels And Coating Films For Discharge Lamps (AREA)
US359652A 1928-05-07 1929-05-01 Mercury switch Expired - Lifetime US1930092A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE311242T 1928-05-07

Publications (1)

Publication Number Publication Date
US1930092A true US1930092A (en) 1933-10-10

Family

ID=31894599

Family Applications (1)

Application Number Title Priority Date Filing Date
US359652A Expired - Lifetime US1930092A (en) 1928-05-07 1929-05-01 Mercury switch

Country Status (2)

Country Link
US (1) US1930092A (enrdf_load_stackoverflow)
GB (1) GB311242A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198919A (en) * 1962-08-01 1965-08-03 Bendix Corp Mercury switch

Also Published As

Publication number Publication date
GB311242A (enrdf_load_stackoverflow) 1929-10-24

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