US1760554A - Electric switch - Google Patents

Electric switch Download PDF

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Publication number
US1760554A
US1760554A US117239A US11723926A US1760554A US 1760554 A US1760554 A US 1760554A US 117239 A US117239 A US 117239A US 11723926 A US11723926 A US 11723926A US 1760554 A US1760554 A US 1760554A
Authority
US
United States
Prior art keywords
switch
contact
gas
arc
explosion chamber
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
US117239A
Other languages
English (en)
Inventor
John D Hilliard
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
Priority to FR596209D priority Critical patent/FR596209A/fr
Application filed by General Electric Co filed Critical General Electric Co
Priority to US117239A priority patent/US1760554A/en
Priority to GB14486/27A priority patent/GB272882A/en
Priority to FR33783D priority patent/FR33783E/fr
Application granted granted Critical
Publication of US1760554A publication Critical patent/US1760554A/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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting

Definitions

  • My invention relates to electric switches of the fluid-break explosion chamber type.
  • lt is an object of my invention to provide an improved electric switch of the fluid-break explosion chamber type which while retaining the circuit interrupting advantages thereof shall avoid the af'orenientioned circuit closing disadvantages thereof.
  • a further object of my invention is to provide an improved construction of switch of this type wherein the insulating liquid is driven by the gas in a plurality ot streams into the arc at different portions thereof.
  • Fig. 1 is a view partly in section of a portion of a fluid break .switch involving my invention and Fig. 2 shows a modification thereof.
  • the vessel 1 containing the insulating liquid 2 has the adapter or contact retainer 3 suspended therein by the insulator bushing l. Screw-threaded into the adapter 3 is the contact carrier 5 to which is attached the arcing ring 6 and within which is the lined contact 7. The lower portion oi the adapter is shown having a flange 8 from which depend the rods 9 1926. Serial No. 117,239.
  • rlhis chamber is illustrated as comprising a cylin der 13, a top plate 111 and a bottom plate 15, each ot insulating material, the top and bottom plates being provided with openings 16 and 1? respectively for the passage of the movable contact rod 18, relatively small clearance only being required around the rod.
  • l have shown the supporting rods 9 secured in the plates 14 and 15 and in the flange 8 by means of the pins 19 but other means mayy be employed as required.
  • the plates of the explosion chamber are further secured against displacement by the nut 20 on the lower end of each' rod 9 which engages the bottoni face of plate 15 and by the sleeve 21 on each rod between the top plate 14 and the flange 8.
  • the chamber may, if desired, be of metal properly insulated as may be required for the current and voltage conditions of the circuit Ato be interrupted.
  • Fig. 2 I have shown the enclosing or gas confining member as the tubular member 25.
  • This member' is suitably secured as for example by the two nuts 26 threaded on the tubular member and engaging opposite sides of the supporting plate 27.
  • Rods 28 suspend the plate 2T from the flange 8 o'l" the adapter 3 as in Fig. l, the remaining portion of the structure including the insulator bushing Ll, vessel l and insulating' liquid 2 as Well as the pins 19 and nuts 2O being also the same as in Fig. l.
  • the modified form illustrated by Fig'. 2 functions in a somewhat similar manner to that shown in Fig. 1.
  • a certain amount of acceleration is given to the Contact rod 18 in opening by the pressure of gas in 25 and streams of insulating liquid are directed from opposite ends thereoivl into the are drawn between the contacts.
  • the same advantages obtain as in the form illustrated by The Contact rod 18 after passing through the tubular member 25 comes Within striking distance of the i'iXed contact and the resulting gas bubble being free to expand laterally does not impede the closing movement ol" the switch.
  • fr iiuid break switch comprising a receptacle containing insulating' liquid, an insulator' .lmshing projecting into the liquid, a fixed member for said contact supported by said bushing, an explosion chamber, and a plurality of spaced rods securing said explosion chamber' to the flange of said member in spaced relation with said iXed contact, whereby said Contact may be removed Without disturbing the explosion chamber.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Circuit Breakers (AREA)
US117239A 1926-06-21 1926-06-21 Electric switch Expired - Lifetime US1760554A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR596209D FR596209A (fr) 1926-06-21 1924-07-18 Perfectionnements apportés aux interrupteurs électriques
US117239A US1760554A (en) 1926-06-21 1926-06-21 Electric switch
GB14486/27A GB272882A (en) 1926-06-21 1927-05-30 Improvements in and relating to electric switches
FR33783D FR33783E (fr) 1926-06-21 1927-06-20 Perfectionnements apportés aux interrupteurs électriques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US117239A US1760554A (en) 1926-06-21 1926-06-21 Electric switch

Publications (1)

Publication Number Publication Date
US1760554A true US1760554A (en) 1930-05-27

Family

ID=22371723

Family Applications (1)

Application Number Title Priority Date Filing Date
US117239A Expired - Lifetime US1760554A (en) 1926-06-21 1926-06-21 Electric switch

Country Status (3)

Country Link
US (1) US1760554A (fr)
FR (2) FR596209A (fr)
GB (1) GB272882A (fr)

Also Published As

Publication number Publication date
GB272882A (en) 1927-11-17
FR33783E (fr) 1929-03-01
FR596209A (fr) 1925-10-19

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