US1930094A - Electric switch - Google Patents

Electric switch Download PDF

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Publication number
US1930094A
US1930094A US607646A US60764632A US1930094A US 1930094 A US1930094 A US 1930094A US 607646 A US607646 A US 607646A US 60764632 A US60764632 A US 60764632A US 1930094 A US1930094 A US 1930094A
Authority
US
United States
Prior art keywords
plunger
switch
container
spring
mercury
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
US607646A
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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 US1930094A publication Critical patent/US1930094A/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
    • H01H29/18—Switches having at least one liquid contact with level of surface of contact liquid displaced by non-electrical contact-making plunger

Definitions

  • the present invention relates to' electric switches and more particularly the invention relates to such switches of the, liquid flow type in which the movements of a magnetizable body are availed of to make and break the electrical contact between the electrodes of the device.
  • the invention attains its objects'by using a spring member of suflicient tension to overcome the buoyancy of the plunger in the mercury to maintain the, plunger in its immersed or contact making position in the container of the device.
  • the drawing is a sectional side elevational view of the new and novel switch made in accordance with the invention.
  • the switch comprises a container 1 having electrodes 5 and 6 sealed therein at each end thereof and a body of mercury 4 therein.
  • a plunger 2, 3 is arranged in said container 1 said plunger 2, 3 consisting of a cylindrical metal core 2 attached to an annular, straight-sided trough member 3 of insulation material such as quartz, for example.
  • the side 3' of said trough member 3 is greater in diameter and in length than the iimer side 3" thereof and said core 2 is attached to the top of said side 3'.
  • Said electrode 5 has two prong members and a cylindrical part 7 at the end of said prong members, said cylindrical part 7 is immersed in the mercury in said trough member 3 at all operating positions of said plunger 2, 3 and is concentric with side 3" the inner diameter thereof being'slightly greater than the outer diameter of said side 3".
  • a spiral spring 8 surrounds side 3" and is located between and presses against the lower cylindrical part 7 of said electrode 5 and the lower interior part of said trough 3, and the strength of said spring 8 is suflicient to overcome the buoyancy of said plunger 2, 3 in said body of mercury 4 and thus maintains said plunger member 2, 3 in its contact making position in said container 1 which position is shown in the draw-
  • coil 2 is energized by closing the switch illustrated which'attracts and moves upward the core 2, and therewith the plunger 2, 3 compressing spring 8.
  • the body of mercury in trough member 3 is then separated from the body of mercury in container 1 and thus the electrical contact between said electrodes 5 and 6 is broken.
  • the switch may be a gas filled switch or a vacuum switch as desired.
  • a switch comprising a container, electrodes sealed therein,- a body of mercury therein, a plunger therein, a spring pressing against said plunger to maintain said plunger in a fixed position in said container during the transportation of said switch, said plunger having a core and adapted on successive movements thereof to make and break the electrical contact between said electrodes.
  • a switch comprising a container, electrodes sealed therein, a body of mercury therein, a
  • a spring arranged between, and pressing against one of said electrodes and said plunger to maintain said plunger in a fixed position in said container during the transportation of said switch, said plunger having a core and adapted on successive movements thereof to make and break the electrical contact between said electrodes.
  • a switch comprising a container, electrodes sealed therein, a body of mercury therein, a plunger therein, and a spring adapted to limit the movements of said plunger in said container during the transportation of said switch.

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  • Contacts (AREA)
US607646A 1931-05-01 1932-04-26 Electric switch Expired - Lifetime US1930094A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1930094X 1931-05-01

Publications (1)

Publication Number Publication Date
US1930094A true US1930094A (en) 1933-10-10

Family

ID=7749908

Family Applications (1)

Application Number Title Priority Date Filing Date
US607646A Expired - Lifetime US1930094A (en) 1931-05-01 1932-04-26 Electric switch

Country Status (2)

Country Link
US (1) US1930094A (enrdf_load_stackoverflow)
NL (1) NL31882C (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506763A (en) * 1944-10-17 1950-05-09 Babler Egon Benedikt Mercury switch
US4366458A (en) * 1981-12-03 1982-12-28 Elenbaas George H Mercury displacement relay

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506763A (en) * 1944-10-17 1950-05-09 Babler Egon Benedikt Mercury switch
US4366458A (en) * 1981-12-03 1982-12-28 Elenbaas George H Mercury displacement relay

Also Published As

Publication number Publication date
NL31882C (enrdf_load_stackoverflow)

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