US2101783A - Spark chamber for automatic cut-outs - Google Patents

Spark chamber for automatic cut-outs Download PDF

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Publication number
US2101783A
US2101783A US77587A US7758736A US2101783A US 2101783 A US2101783 A US 2101783A US 77587 A US77587 A US 77587A US 7758736 A US7758736 A US 7758736A US 2101783 A US2101783 A US 2101783A
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US
United States
Prior art keywords
chamber
contacts
base
spark
outs
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
US77587A
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English (en)
Inventor
Leyhausen Wilhelm
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Individual
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Individual
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Filing date
Publication date
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Publication of US2101783A publication Critical patent/US2101783A/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts

Definitions

  • Patented Dec. 7, 1937 SPARK CHAMBER FOR AUTOMATIC CUT-OUTS Wilhelm Leyhausen, Nuremberg, Germany Application May 2, 1936, Serial No. 77,587 In Germany May 3, 1935 4 Claims.
  • This invention relates to a sparking chamber for overload circuit breakers and has special reference to a chamber of this character having an electro-magnetic blow-out for the are produced by sparking when a circuit is opened.
  • One important object of the invention is to provide a novel arrangement of such a chamber wherein means age supplied for admission of air to the sparking c amber to overcome the vacuum effect produced in a closed chamber by the sparking therein whereby cooling of the contacts is eflected and ionization of the air in the chamber is eliminated.
  • a second important object of the invention is to arrange the contacts of an overload circuit breaker in a narrow chamber having a blow-out magnet at each side thereof whereby highly effective blow-out effects are produced.
  • a third important object of the invention is to so shape the chamber that the arc field is surrounded on all sides by closed walls, thus preventing injurious efiects outside of the chamber, the latter being provided with air ports so offset as to prevent escape of the arctherethrough.
  • Fig. 2 is a section on the line II-II of Fig. 1;
  • Fig. 3 is a section on the line III-III of Fig. 4;
  • Fig. 4 is a section on the line IV-IV of Fig. 3.
  • Fig. 5 is a perspective view of an inserted wall member made in one piece.
  • Upon the base s (Fig. 1) are spring supported contacts a and b.
  • a contact bridge member c is disposed opposite to them. Said contacts a and b and said contactbridge member 0 are encased by the spark chamber I.
  • At the sides of the spark chamber f magnet coils m and m are arranged (Fig. 2).
  • An air-inlet tube i is provided between the contacts a and b.
  • the passage openings provided in the bottom of the spark chamber for the contacts a and b are of sufficiently large dimensions, so that the air can enter around them from below.
  • the partition walls w, w are larger dimensioned on the narrow sides 01' the spark chamber 1 than are the corresponding walls of the spark chamber. 5
  • the partition walls w, w have not only the task of stopping or deviating to cool down the arcing at the switch, but they cause also a considerable damping of the sound or noise occurring in switching out heavier short circuits. Said 30 noise propagates in the same direction as the arcing at the switch, but is repeatedly stopped and refracted by means of the tortuous passage formed by the walls w, w.
  • the spark chamber 1 as illustrated in the Figures 3 to 5, is generally constructed in the 40 same manner as that described and shown. in the Figures 1 and 2, but for the purpose of increasing the damping action, partition walls 9', g, g g are provided which are arranged at both sides of the contacts a, b.
  • the spark chamber f is 45 divided into a plurality of spaces. Thereby the are '0, o' is choked and cooled down in such a manner that it is extinguished very quickly.
  • the intersected walls 9, g and g, g advantageously held by cross members h, h and h M.
  • said walls can form an insert member formed in one piece.
  • a base a pair of spaced contacts spring supported from said base, a movable contact normally bridging said spaced contacts, a substantially closed chamber surrounding said contacts and resting on said base, means to admit air to said chamber between net winding of 28 turns (corresponding to a rated said pair of contacts, means at the ends of said chamber to discharge air from the chamber, and a pair of blow-out magnets supported on said base at opposite sides of the chamber and disposed in alinement with the space in the chamber centrally above the pair of contacts.
  • a base a pair of spaced contacts spring supported from said base, a movable contact normally bridging said spaced contacts.
  • a substantially closed chamber surrounding said contacts and resting on said base, means to admit air to said chamber between said pair of contacts, means at the ends of said chamber to discharge air from the chamber, a pair of blow-out magnets supported on said base at opposite sides of the chamber and disposed in alinement with the space in the chamber centrally abovethe pair of contacts, and partition walls in said chamber extending from top to bottom of the chamber parallel to the side walls of the chamber.
  • a base In an overload circuit breaker, a base, a pair of spaced contacts spring supported from said base, a movable contact normally bridging said spaced contacts, a substantially closed chamber surrounding said contacts and resting on said base, means to admit air to said chamber between said pair of contacts, said chamber having laterally ofiset portions at its ends provided with air outlet ports, and a pair of blow-out magnets supported on said base at opposite sides of the chamber and disposed to lie opposite the arcing field of said contacts.
  • a base a pair of spaced contacts spring supported from said base, a movable contact normally bridging said spaced contacts, a substantially closed chamber surrounding said contacts and resting on said base, means to admit air to said chamber between said pair of contacts, said chamber having laterally offset portions at its ends provided with air outlet ports, a. pair of blow-out magnets supported on said base at opposite sides of the chamber and disposed to lie opposite the arcing field of said contacts, and partition walls in said chamber extending from top to bottom of the chamber parallel to the side walls of the chamber.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Electron Sources, Ion Sources (AREA)
US77587A 1935-05-03 1936-05-02 Spark chamber for automatic cut-outs Expired - Lifetime US2101783A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE470521X 1935-05-03

Publications (1)

Publication Number Publication Date
US2101783A true US2101783A (en) 1937-12-07

Family

ID=6541136

Family Applications (1)

Application Number Title Priority Date Filing Date
US77587A Expired - Lifetime US2101783A (en) 1935-05-03 1936-05-02 Spark chamber for automatic cut-outs

Country Status (5)

Country Link
US (1) US2101783A (fr)
BE (1) BE415022A (fr)
FR (1) FR804622A (fr)
GB (2) GB470521A (fr)
NL (2) NL43030C (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506991A (en) * 1946-04-01 1950-05-09 Bendix Aviat Corp Circuit breaker
US2632827A (en) * 1948-01-27 1953-03-24 Metropolitan Device Corp Circuit controller
US2945109A (en) * 1958-04-14 1960-07-12 Licentia Gmbh Circuit breaker
US3166660A (en) * 1960-05-09 1965-01-19 Square D Co Contact construction with metallic contact members and auxiliary metallic arc suppressant conducting members

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506991A (en) * 1946-04-01 1950-05-09 Bendix Aviat Corp Circuit breaker
US2632827A (en) * 1948-01-27 1953-03-24 Metropolitan Device Corp Circuit controller
US2945109A (en) * 1958-04-14 1960-07-12 Licentia Gmbh Circuit breaker
US3166660A (en) * 1960-05-09 1965-01-19 Square D Co Contact construction with metallic contact members and auxiliary metallic arc suppressant conducting members

Also Published As

Publication number Publication date
NL45245C (fr)
GB470521A (en) 1937-08-17
BE415022A (fr)
NL43030C (fr)
FR804622A (fr) 1936-10-28
GB470615A (en) 1937-08-18

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