US2183198A - Mercury switch - Google Patents

Mercury switch Download PDF

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Publication number
US2183198A
US2183198A US147093A US14709337A US2183198A US 2183198 A US2183198 A US 2183198A US 147093 A US147093 A US 147093A US 14709337 A US14709337 A US 14709337A US 2183198 A US2183198 A US 2183198A
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US
United States
Prior art keywords
mercury
electrodes
switch
receptacle
insulating
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
US147093A
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English (en)
Inventor
Lindstrom Alrik Civer
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2183198A publication Critical patent/US2183198A/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
    • H01H29/02—Details
    • H01H29/04—Contacts; Containers for liquid contacts
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors

Definitions

  • the present invention relates to mercury switches of the type comprising a closed receptacle partly filled with mercury, and solid metallic electrodes therein, said electrodes being adapted to be connected in an outer circuit and,
  • Onefobject of the invention is to provide an improved mercuryswitch of the type described, in which impurities disengaged from the solid electrodes due to the action of the electric arc orgoii mercury 'vapor are "prevented from passing tion of the switch, in which the contactgs and breakings are, performed, thus.
  • Another object of the invention is to prevent the arc and the mercury vapor from coming into contact with the solid electrodes so as to reduce or eliminate the disengagement of impurities from the latter and to decrease the intermediate resistance between the electrodes and the mer-' as mercury filling-openings duringthe assembly I cury.
  • a further object of theinvention is to pro vide a mercury switch of the type described, in which the electrodes are screened oil from the free mercury surface in the section of the receptacle, where the contact makings and breakings are performed, in such a manner that the L passage of particles disengaged from the electrodes to said mercury surface is prevented or made more difllcult.
  • Still another object of the invention is to provide a switch of the type described having two partitions protruding into the mercury between .the electrodes and separating the parts of the free mercury surface located above or at the Y electrodes from the parts of said surface located merely with mercury vapor. Provided cenin the space where the contact is made or broken, in order to retain the impurities on the firstmentioned parts of the mercury surface and to' prevent them from moving therefrom.
  • a still further object is to arrange said partitions in such a manner that a so called mercury trap is formed, by which the gas-fllledspaces near the electrodes are separated from the remaining gas-filled spaces.
  • Figures 1 and 2 are two sectional elevations ,at right angles to each other, the section accordbetween for tightening purposes.
  • I designates a base plate and 2, 3 two resilient arms attached thereto.
  • mercury switch proper is rotatably supported by V 5 these arms which by their outer ends embrace hollow pivots 6 and l on the switch.
  • the arms tubular part being closed by caps 12 and It of any suitable metal, for instance iron orsteel.
  • the caps are joined to the tubular part by a go molded mass M, for instance an artificial resin, asbestos rings I5 and It being interposed there- At theirlcenshort open sleeves" and I8 respectively, serving of the switch.
  • the above-mentioned hollow piv ots 6 and I embrace these sleeves andare soldered thereto.
  • the pivots are made of a highly conductive metal, as'for instance brass, 80
  • Insulating washers l9 are interposed between the sleeves and the brass pivots to prevent thetlatter from being attacked by the mercury.
  • the receptacle thus formed is partly fllled' Y with a mercury mass 20, adapted to form metallic contact between the two electrodes of the switch, namely the caps l2 and I I.
  • the space ortne receptacle above the mercury level may be filled 40 with a suitable gas, for instance hydrogen, or
  • trally of the receptacle is a wall 2
  • the one end position the mercury mass is divided by the "wall 2
  • the walls 23 and 24 have apertures 25 and 26, respectively, which are immersed in the mercury in all positions of the switch, so that the mercury masses at both sides of the walls are electrically connected at all times.
  • the solid metal electrodes l2 and I3 Due to the restricted cross-sectional area of the apertures 25 and 26 it is difllcult for the mercury vapor to find its way to the electrodes through the mercury.
  • a mercury switch comprising a closed receptacle mounted for rocking movement between two end positions, two electrodes in said receptacle, a mercury mass in same in contact with said electrodes, an insulating wall between said electrodes rigidly connected with the receptacle, an aperture in said wall adapted on the rocking movement of the receptacle to be located above the mercury level in one end position of the switch and under the mercury level in the other end position of the switch, an insulating wall between each of the electrodes and the firstmentioned wall, apertures in the last-mentioned Wallslocated under the mercury. level in both end positions of the switch..
  • a mercury switch comprising two metal electrodes, a mercury mass in contact with said electrodes to connect and disconnect the same, an apertured insulating wall between said electrodes to make and break-the connection between same on rotation of the switch, an insulating wall between each of the electrodes and the first-mentioned wall, the last-mentioned walls being provided with apertures simultaneously immersed in the mercury mass.
  • a mercury switch comprising a sealed receptacle mounted for rocking movements. twosulating body, metal caps'closing the ends of said body, an apertured insulating disk located at the centre of said tubular body and lateral insulating disks located to both sides of the first-mentioned disk and having apertures, said apertures being located on the same side of the axis of the tubular body, and means limiting the rocking movement of the receptacle.
  • a mercury switch comprising a receptacle consisting of a cylindrical insulating body mounted for rocking movement aboutits axis, means limiting the angle of said rocking movement, two
  • mercury mass adapted to connect and disconnect said electrodes, means adapted to separate and permit coalescence of the mercury mass during the rocking movements of the receptacle, insulating disks located between said electrodes one at each end of said cylindrical body, said d sks being provided with apertures located on the same side of the axis of said cylindrical body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US147093A 1936-06-13 1937-06-08 Mercury switch Expired - Lifetime US2183198A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE2183198X 1936-06-13
GB15908/37A GB496961A (en) 1936-06-13 1937-06-08 Improvements in or relating to mercury switches

Publications (1)

Publication Number Publication Date
US2183198A true US2183198A (en) 1939-12-12

Family

ID=32071276

Family Applications (1)

Application Number Title Priority Date Filing Date
US147093A Expired - Lifetime US2183198A (en) 1936-06-13 1937-06-08 Mercury switch

Country Status (6)

Country Link
US (1) US2183198A (en:Method)
BE (1) BE422062A (en:Method)
DE (1) DE693719C (en:Method)
FR (1) FR822996A (en:Method)
GB (1) GB496961A (en:Method)
NL (1) NL46464C (en:Method)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609467A (en) * 1948-12-13 1952-09-02 George W Winter Mercury switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609467A (en) * 1948-12-13 1952-09-02 George W Winter Mercury switch

Also Published As

Publication number Publication date
NL46464C (en:Method) 1939-08-15
FR822996A (fr) 1937-01-11
BE422062A (en:Method) 1937-07-31
DE693719C (de) 1940-07-17
GB496961A (en) 1938-12-08

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