US1728031A - Electric switch - Google Patents

Electric switch Download PDF

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Publication number
US1728031A
US1728031A US310320A US31032028A US1728031A US 1728031 A US1728031 A US 1728031A US 310320 A US310320 A US 310320A US 31032028 A US31032028 A US 31032028A US 1728031 A US1728031 A US 1728031A
Authority
US
United States
Prior art keywords
conical
insulating
explosion chamber
electric switch
wall
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
US310320A
Other languages
English (en)
Inventor
Bigenwald Rudolf
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 US1728031A publication Critical patent/US1728031A/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
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
    • H01H33/75—Liquid-break switches, e.g. oil-break

Definitions

  • My invention relates to electric switchesof the liquid break type and particularly to eX- plosionchamber casings for such switches.
  • Explosion chamber casings commonly have been constructed of metal with an insulation lining and wit-h an insulating bushing in the- It has been proposed to construct *L bottom.
  • the explosion chamber casing in part of a strong insulating material, such for example i0 as hard paper, but diliiculties havel been.
  • the enclosing vesselor tank l contains insulating liquid 2 in which the contacts are immersed. Supported by the insulator'bushing 3 and connected with the contact stud .tis the plate 5 forming the top-of the explosion chamber casingfin which is mounted the fixed contact 6.
  • This contact is of the well known socket-type which is adapted to receive the movable contact rod 7.
  • two similar contact rods 7 are secured at 'opposite ends of the bridge 8, the two rods being associated with two similar explosion chamber casings in the common and well understood manner.
  • each explosion chamber casing are of insulating material ⁇ such as hard paper.
  • the hard paper is impregnated with tacts in the explosion chamber, I have shown bakelite, the cylindrical wall will be deformed to produce the conical portions before the ⁇ bakelite is cured.
  • the upper plate 5 is provided with thev internal flange 12 having a conical outer face and screw threaded to this plate 1s the clamping ring 13 having a coni- 55 cal inner face.
  • the bottom plate 11 has a conical periphery corresponding with the lower conical portion of the cylindrical wall, thus lirmlv securing the bottom wall against being blown out by internal pressure.
  • rIlhe throat bushing 15 is also of insulation and may be of hard paper like the walls. 10 and 11. I have shown the bottom wall 11 with the material thereof arched inwardly thereby better to withstand the great pressure to which it is sometimes subjected.
  • the separately formed members 10, 1l and 15 are preferably impregnated with bakelite or a similar material and after being assembled are cured, thus securely binding together the several parts.
  • An explosion chamber casing for a liquid ⁇ break switch comprising a cup-like insulating member having ,an outwardly inclined edge portion, a cover engaging the inner face of saidinclined edge portion, and apclamping member cooperating with the cover and engaging the outer facegof said inclined edge portio'n.
  • An explosion chamber casing for a liquid break switch comprising a cup-like insulating i member having a conical edge portion, a cover having a conical portion engaging the inner face of said 'edge portion, and a clamping member adjustably secured to the cover and having a conical portion engaging the outer v face of said edge portion.
  • An explosion chamber casing for a liquid break switch comprising a hollow cylindrical insulating member having an inwardly inclined end portion, and an insulating end...y plate therefor ittingywithin and retained by said inclined end portion.
  • An explosion chamber casing for a liquid break switch comprising a hollow cylindrical insulating member having an inwardly inclined conical endportion, and an insulating end plate therefor'y having a central contact opening and a conical periphery fitting Within said conical end portion, said end plate having an insulating ⁇ bushing arranged in the opening therein.
  • An explosion chamber casing for a liquid break switch comprising a cylindrical mem bcr of hard paper having its upper and lower ends pressed to form respectively outwardly flaring and inwardly flaring conical portions, a metal cover therefor having a flange engaging the inner face of the outwardly flaring conical portion, a ring threaded to said cover and enaging the outer face of the outwardly flaring conical portion, an end plate of hard paper fitting within and retained by said inwardly flaring conical portion, and an insulating bushing secured in said end plate.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
US310320A 1927-11-17 1928-10-04 Electric switch Expired - Lifetime US1728031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE300650T 1927-11-17

Publications (1)

Publication Number Publication Date
US1728031A true US1728031A (en) 1929-09-10

Family

ID=31894274

Family Applications (1)

Application Number Title Priority Date Filing Date
US310320A Expired - Lifetime US1728031A (en) 1927-11-17 1928-10-04 Electric switch

Country Status (2)

Country Link
US (1) US1728031A (enrdf_load_stackoverflow)
GB (2) GB300650A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
GB303010A (en) 1929-11-07
GB300650A (enrdf_load_stackoverflow) 1929-09-05

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