US1940300A - Circuit breaker - Google Patents

Circuit breaker Download PDF

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Publication number
US1940300A
US1940300A US267685A US26768528A US1940300A US 1940300 A US1940300 A US 1940300A US 267685 A US267685 A US 267685A US 26768528 A US26768528 A US 26768528A US 1940300 A US1940300 A US 1940300A
Authority
US
United States
Prior art keywords
circuit
operating member
breaker
casing
sylphon
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
US267685A
Other languages
English (en)
Inventor
Gerdien Hans
Jubitz Werner
Geiler Oskar
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.)
CBS Corp
Original Assignee
Westinghouse Electric and Manufacturing 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 Westinghouse Electric and Manufacturing Co filed Critical Westinghouse Electric and Manufacturing Co
Application granted granted Critical
Publication of US1940300A publication Critical patent/US1940300A/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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6664—Operating arrangements with pivoting movable contact structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/64—Contacts
    • H01H37/68—Contacts sealed in evacuated or gas-filled tube

Definitions

  • Our invention relates to circuit breakers and particularly to circuit breakers of the vacuum type wherein the circuit is interrupted within a vacuum vessel.
  • An object of our invention is to provide a circuit breaker of the vacuum type wherein theacteristics wherein the actuating member is mounted for lateral displacement or for pivotal movement in order to obviate longitudinal expansion of the sylphon, thereby obtaining a maximum operating movement of the circuit-breaker contacts with a minimum displacement of the sylphon or diaphragm.
  • a further object of our invention is to provide a circuit breaker of the vacuum type wherein the circuit-breaker contacts may be actuated by a thermostat mounted exteriorly of the circuitbreaker casing.
  • the single figure is a vertical section through a circuit breaker embodying features of our invention.
  • the circuit breaker comprises a casing 1 that may be made of glass or metal, as preferred, the casing of the device illustrated being made of glass of tubular form.
  • the lower end of the easing 1 is closed by means of a glass sylphon 2 that extends interiorly of the casing and supports a circuit-breaker-operating member 3 that is operable from the exterior of the casing and serves to operate a circuit-breaker contact, in a 5 manner to be hereinafter described.
  • the upper end of the tubular casing 1 is closed by a re-entrant diaphragm 4 through which the conductor terminals 5 and 6 extend to the interior oi the casing where they are connected to circult-breaker contact members '1 and 8.
  • the contact member '7 is provided with an extension 12 that is engaged by the free end of the operating member 3 and may be moved to the open position, indicated by dotted lines, when the outer end of the operating member 3 is moved laterally, the operating rod 3 pivoting upon the end of the sylphon 2 and displacing it laterally and angularly.
  • the degree of movement of the walls of the sylphon is relatively slight and not sufilcient to exceed the elastic limit of the material of which it is made.
  • a relatively wide movement of the circuit-breaker contact may be accomplished with a minimum displacement of the sylphon walls.
  • circuit-breaker contacts may be separated any desired distance by a very slight movement of the sylphon walls by proportioning the operating member in such manner that the inner arm thereof is considerably longer than the outer operating arm.
  • a very slight movement of the outer end of the operating member causes a movement of the inner end 00 of the operating member in proportion to the ratio of the lengths of the parts of the operating member on opposite sides of the pivotal point.
  • the circuit-breaker casing is supported upon a metal supporting member 13 which is provided with a tubular extension 14 for containing an expansion bar of a thermostat 16.
  • the position of the bar 15 within the tubular casing 14- is regulated by an adjusting screw 1'7. Expansion of the bar 15, in response to a rise in temperature of the medium surrounding the thermostat, causes the lower end of the operating member 3 to be moved to the right and the inner end thereof to be mov ed to the left to open the circuit breaker.
  • a hermeticallysealed one-piece glass enclosing casing including a tubular side wall member and a flexible glass end portion re-entrant within said side wall member, a pair of electrical contacts mounted within .said casing and being surrounded by a vacuum ambient, an operating member laterally movable for actuating one of said contacts into and out of engagement with the other, said operating member extending through said flexible glass end portion and being supported thereby, and means for laterally moving the outer end of said operating member so as to cause it to pivot about said end portion due to the flexing thereof and move one of said contacts.
  • an enclosing casing entirely of a unitary piece of vitreous insulatin material said casing including a side wall memher and a re-entrant end portion extending within said side wall member, said re-entrant portion being flexible and having annular corrugations thereabout, a pair of electrical contact member! mounted within said casing in side by side relation and an operating member for laterally moving one of said contact members, said operating member extending through said re-entrant portion and being supported thereby so as to pivot about said re-entrant portion due to the flexing thereof upon lateral movement of the outer end of said operating member.
  • a hermetically sealed casing including a tubular side wall memher and a flexible re-entrant end portion of glass projecting within said tubular side wall for protecting said flexible glass end portion irom breakage, a pair of electrical contact members mounted within said casing and being relatively separable in a lateral direction, and an operating member for separating said contact members extending through said flexible re-entrant portion for pivotal movement thereabout upon lateral movement of the outer end of said operat member.

Landscapes

  • Thermally Actuated Switches (AREA)
US267685A 1927-06-08 1928-04-05 Circuit breaker Expired - Lifetime US1940300A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE291758X 1927-06-08

Publications (1)

Publication Number Publication Date
US1940300A true US1940300A (en) 1933-12-19

Family

ID=6069690

Family Applications (1)

Application Number Title Priority Date Filing Date
US267685A Expired - Lifetime US1940300A (en) 1927-06-08 1928-04-05 Circuit breaker

Country Status (4)

Country Link
US (1) US1940300A (es)
FR (1) FR653807A (es)
GB (1) GB291758A (es)
NL (1) NL23175C (es)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2472625A (en) * 1944-05-23 1949-06-07 Gen Electric Electric circuit breaker
US2527475A (en) * 1945-10-26 1950-10-24 Clifford V Bates Switch
US2559372A (en) * 1948-12-10 1951-07-03 Howard A Rike Thermostatic switch
US2594750A (en) * 1949-02-23 1952-04-29 Robertshaw Fulton Controls Co Thermostatic control device
US2607005A (en) * 1946-10-30 1952-08-12 P A M Ltd Thermionic tube control system
US2640896A (en) * 1950-03-16 1953-06-02 Pierce John B Foundation Thermostat device
US2719198A (en) * 1952-07-05 1955-09-27 Lewis L Cunningham Fire detector
US2719199A (en) * 1950-09-29 1955-09-27 Milwaukee Gas Specialty Co Thermostat
US2725445A (en) * 1952-04-08 1955-11-29 Barnes Eng Co Hermetically sealed apparatus
US2735912A (en) * 1956-02-21 Ulanet
US2778901A (en) * 1955-03-21 1957-01-22 Lewis L Cunningham Space thermostat
US2879351A (en) * 1955-04-27 1959-03-24 Bendix Aviat Corp Pressure responsive device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735912A (en) * 1956-02-21 Ulanet
US2472625A (en) * 1944-05-23 1949-06-07 Gen Electric Electric circuit breaker
US2527475A (en) * 1945-10-26 1950-10-24 Clifford V Bates Switch
US2607005A (en) * 1946-10-30 1952-08-12 P A M Ltd Thermionic tube control system
US2559372A (en) * 1948-12-10 1951-07-03 Howard A Rike Thermostatic switch
US2594750A (en) * 1949-02-23 1952-04-29 Robertshaw Fulton Controls Co Thermostatic control device
US2640896A (en) * 1950-03-16 1953-06-02 Pierce John B Foundation Thermostat device
US2719199A (en) * 1950-09-29 1955-09-27 Milwaukee Gas Specialty Co Thermostat
US2725445A (en) * 1952-04-08 1955-11-29 Barnes Eng Co Hermetically sealed apparatus
US2719198A (en) * 1952-07-05 1955-09-27 Lewis L Cunningham Fire detector
US2778901A (en) * 1955-03-21 1957-01-22 Lewis L Cunningham Space thermostat
US2879351A (en) * 1955-04-27 1959-03-24 Bendix Aviat Corp Pressure responsive device

Also Published As

Publication number Publication date
FR653807A (fr) 1929-03-28
NL23175C (es)
GB291758A (en) 1929-07-25

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