US1861630A - Mercury switch with plunging core - Google Patents

Mercury switch with plunging core Download PDF

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Publication number
US1861630A
US1861630A US359653A US35965329A US1861630A US 1861630 A US1861630 A US 1861630A US 359653 A US359653 A US 359653A US 35965329 A US35965329 A US 35965329A US 1861630 A US1861630 A US 1861630A
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US
United States
Prior art keywords
mercury
core
vessel
container
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
US359653A
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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 US1861630A publication Critical patent/US1861630A/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

  • My invention refers to mercury switches and more especially to the kind of switches comprising a container enclosing a body of mercury and a magnetizable body floating in the mercury, this body being depressed deeper into the mercury by means of a magnetic field acting in .the vicinity of the container. By thus depressing the floating .body into themercury, the mercury level in '50 the container. is caused to rise and bridge the distance between ,the ends of the two electrodes.
  • switch devices of this kind require for their 1" operation a comparatively large amount of energy in order to overcome the considerable lifting forces exterted on the iron core by the mercury.
  • this arrangement involves the disadvantage that the current Y is interrupted between the mercury and the electrodes whereby the electrode material is readily dissolved in the mercury.
  • the making and breaking of the circuit also occurs in proximity to the glass wall'of the container, whichis thereby soon destroyed-.-
  • I employ a core consisting partly of iron and partly of a vessel containing mercury.
  • the mercury in the vessel is usedfor making and breaking the contact and therefore a contact making and breaking between the mercury and the electrodes is avoided.
  • Switching is here eflected within the mercury vessel mounted on the plunging core so that the container wall is not affected thereby.
  • a This small vessel mounted on the iron '.core can be madeof quartz or some other material resistive against the action of the are without requiring great cost.
  • Fig. 1 is an .axial section of the first modification
  • Fig. 2 is a similar view of the second form.
  • Fig. 1, 1 is a tubular container and 2 and 3 are metal wires extending axially into this container from the top and bottom thereof, respectively, and forming the electrodes.
  • ,4 is the body of mercury partly filling the container and 5 is a tubular iron core floating in the mercury.
  • a small vessel made of quartz or the like is mounted on top of the iron core. It consists of an inner tube 7 closed at the bottom, an outer tube 8 and a flange 6 connecting the top ends of the tubes.
  • the inner tube 7 extends into the iron-core 5, while the outer' tube 8 surrounds the outer wall thereof.
  • the inner tube 7 of the vessel is filled with a. body of mercury 9.
  • the iron core 15 has the form of a tube of greater diameter.
  • the quartz vessel is'formed again of two concentric tubes 16 and 18, the inner one being of less height than the outer one and the two tubes being connected with each other by an annular bottom 19.
  • the vessel is filled with a body'of mercury 17 up to the top edge of the inner tube 18.
  • a solenoid 20 which surrounds the container 1
  • the mercury level in the container 1 rises'in the tube 18 until the mercury flows over the top edge of the tube 18 and unites with the body of mercury 17 in the vessel.
  • the outertube is longer than the inner tube of the vessel, the are which may form when switching is kept away from the walls of the glass container 1.
  • a mercury switch comprising 9. container, a body of mercury in said container, a core floating on said body, a vessel on said core, said vessel having a continuous horizontal rim, another body of mercury in said vessel, said bodies of mercury :merging and separating on said rim upon appropriate movement of said core, and an electrode extending into each body of mercury.
  • a mercury switch comprising a container, a body of mercury in said container, 9. core floating on said body, a vessel of annular cross-section on said core, another body of mercury in saidvessel, said vessel having a cross-section on said core, another body of mercury in-said vessel, the inner wall of said vessel being lower than the outer one and having a horizontal rim on which said mercury bodies merge and separate on appropriate movement of said core, and an electrode extending into each body of mercury.
  • a mercury switch comprising a container, a body of mercury in said container, a core floating on said body, a vessel supportedby said core, another body of mercury in said vessel, a passage through said core for mercury flow to connect said bodies, and an electrode extending into each body of mercury, said vessel having a continuous horizontal rim on which said mercury bodies merge and separate on appropriate movement of said core.
  • a mercury switch comprising a container, a body of mercury in said container, a core floating on said body, a vessel of arc resisting material on said core, a body of mercury in said vessel, said vessel having a continuous rim on which said bodies of mercury merge and separate on appropriate movement of said core, and an electrode extending into each of said bodies of mercury.

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  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
US359653A 1928-05-08 1929-05-01 Mercury switch with plunging core Expired - Lifetime US1861630A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1861630X 1928-05-08

Publications (1)

Publication Number Publication Date
US1861630A true US1861630A (en) 1932-06-07

Family

ID=7746507

Family Applications (1)

Application Number Title Priority Date Filing Date
US359653A Expired - Lifetime US1861630A (en) 1928-05-08 1929-05-01 Mercury switch with plunging core

Country Status (3)

Country Link
US (1) US1861630A (enrdf_load_stackoverflow)
DE (1) DE560913C (enrdf_load_stackoverflow)
NL (1) NL29685C (enrdf_load_stackoverflow)

Cited By (1)

* 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

Cited By (1)

* 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

Also Published As

Publication number Publication date
DE560913C (de) 1932-10-08
NL29685C (enrdf_load_stackoverflow)

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