US1724840A - Circuit maker and interrupter - Google Patents

Circuit maker and interrupter Download PDF

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Publication number
US1724840A
US1724840A US97734A US9773426A US1724840A US 1724840 A US1724840 A US 1724840A US 97734 A US97734 A US 97734A US 9773426 A US9773426 A US 9773426A US 1724840 A US1724840 A US 1724840A
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US
United States
Prior art keywords
contacts
contact
current
circuit
interrupter
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
US97734A
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English (en)
Inventor
Benjamin W Jones
Charles H Chapman
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 BE340864D priority Critical patent/BE340864A/xx
Application filed by General Electric Co filed Critical General Electric Co
Priority to US97734A priority patent/US1724840A/en
Priority to FR630059D priority patent/FR630059A/fr
Priority to GB7313/27A priority patent/GB268329A/en
Application granted granted Critical
Publication of US1724840A publication Critical patent/US1724840A/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
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
    • H01H77/104—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement with a stable blow-off position

Definitions

  • Our invention relates to improvements in circuit makers and interrupters, and in particular. to circuit closers and 'interrupters of the well known contactor type.
  • the contact tips are hot from the effects of the arc and the-current through the tips, when the tips reclose they are likel to be welded and 46 remain closed even t ough the operatin magnet or .-other o pgrating and holding device is released. e above action is very rapid and may occur several times before the operating .and holding device is fully 50 released. Therefore, if the circuit interrupter is provided with a'magnetic blow out effective to interrupt a large amount of ower, the interrupter may be rendered ine ective by reason of the welding action of the contact tips.
  • the object of our invention is to prevent the above mentioned welding action of the contact tips.
  • the latching evice is preferably arranged so as to require the manual release thereof and this must be done before the 'contactor is rendered effective to again close its controlled circuit.
  • the latching device is never efi'ective for the ordinary values of current through the contacts and only becomes effective for the large values of ipurrent which would cause the welding acion.
  • Fig. 1 is a side view 0% an open contactor in accordanw with the invention
  • Fig. 2 is a detail showing the relative position of various arts when the contact tips are closed
  • Fig. 3 is another detail similar to Fig. 2 showing the position of the s ring ressed movable contact when the la g evice has operated by reason of the separation of the contacts due to the above mentioned repulsive action.
  • the circuit maker and interrupter is indicated as of the well known contactor type having a stationary contact 10 with which the movable contact 11 is arranged to make abutting en 0- ment for completing the circuit throug the contacts.
  • the movable contact 11 is mounted on a pivotally mounted support 12 which 1s reslliently held in position with respect to the pivotally mounted magnetic movable member or armature -13 by means of the g spring 14, which is interposed between the member 12 and the upper end of the armature 13. It will be observed by reference to Figs. 1 and 2 that a slight relative movement .occurs between the support-.
  • the armature 13 forms a part of an operating electrotends to len magnet having the winding spool 15 mounted on the core 16 of magnetic material, these parts being suitably mounted in the support 17 of magnetic material.
  • a magnetic blow out device is provided for interrupting the arcs formed between the contact tips 10 and 11.
  • This blow out device comprises a coil 18 which is included in the circuit through the contact tips 10 and 11, and an arc chute 19 of refractory material held between suitable pole pieces 20 secured to the core 21 of the blow out device.
  • the parts of the switch are mounted on a suitable. insulating support or base 22. The arrangement thus far described is a well .known type of contactor.
  • the repulsive effect on the contacts is increased to such a value that the strain on the sprin 14 is insufiicient to hold the contacts in t eir closed ositions. This will eifect a se aration 0 the contacts and an arc w' be formed at the contacts By reason of the.
  • the contacts will'then remain closed from the contact 11.
  • the detent 24 is mounted for a sliding motion in the support 26,
  • Fig. 1 we have indicated the rela tive positions of the various parts when the o5 contactor is in-the open position.
  • Fig. 2 we have indicated the position these parts assume when the electromagnet is energized, the armature 13 attracted and the contacts 10 and 11 brought into a'circuit closing engage- 70.
  • the detent-in such a way that the detent will prevent the return of the contact 11 to its position indicated in Fig. 1 when the win ing of the electromagnet is deenergized and the switch contacts opened. If the current through the switch contacts is of such a value that the repulsive efiect will separate the movable contact 11 from the stationary contact 10 an appreciable distance so that the projecting end 25 will slide over the edge of the detent 24, as indicated in Fig.
  • the contact 11 will thus be prevented from returning into engagement with the contact 10. It will thus be seen that even though the winding of the electroma et is energized to reclose the contacts, t ese contacts will not be closed.
  • the detent 24 thus operates to prevent the reclosure'of the contacts, it is'necessar to manually release the detent, this being one by pressing down on the'button 28 which is secured to the detent 24.
  • a circu1t maker and interrupter having a pair of circuit interrupting engaging contacts, resilient means for holding the contacts in engagement, and a normally inactive device w ich becomes effective to hold the contacts in their separated position-when the contacts are separated a predetermined distance due to the repulsive efiect of;.-the current through the contacts.
  • a circuit maker and interrupter having a pair of circuit interrupting, engaging contacts, a resilient support for one of said contacts, and means for preventing the reclosure of said contacts when the contacts separate due to the repulsive efi'ect of the current through the contacts.
  • a circuit maker and interru ter having a stationary contact and a movab e cooperating contact arranged to engage therewith, I
  • a circuit maker and interrupter having duction of the current through the contacts effected by said blowout.
  • a circuit maker and interrupter having a pair of circuit interrupting engaging con tacts, aresilient support for one of said contacts, means for holding said contacts in engagement, and means for preventing the automatic'reclosure of said contacts after the separation thereof due to the repulsive effect of the current through the contacts when said holding means is released.
  • a circuit maker and interrupter having a pair of circuit interrupting engaging contacts, a resilient support for one of said contacts, an operating member for effecting the closure'of the contacts and for holding the same in circuit closing engagement, and means for preventing the reclosure of said contacts, after the separation thereof due to the repulsive effect of the current through the contacts, when the holding effect of said operating member is released.
  • a circuit maker and interrupter having a pair of relatively movable abutting contacts, a resilient support for one of said contacts for providing a resilient wiping abutting circuit comfpleting engagement of the contacts, means or holding said contacts in engagement, and means for preventing the automatic reclosure of said contacts after the separation thereof due to the repulsive effect of the current through the contacts.
  • a contactor having a stationary contact, a movable contact arranged to engage therewith, aresilient support for said movable contact, a magnetic movable member for operating the said support and movable contact, an electromagnet for operating said member, a magnetic blowout for the said contacts, and a resilient latch cooperating with said movable contact for preventing the same from returning to the closed position when separated from the stationary contact by the repulsive efiect of the current through the contacts.
  • a contactor having a stationary contact, a movable contact arranged'to engage therewith, a resilient support for said movable contact, a magnetic movable member for operating the said support and movable contact, an electromagnet operable when energized to hold said contacts in engagement and means for preventing the reclosure of said contacts by the operation of said electromagnet after the se aration thereof due to the repulsive effect 0 the current through the contacts.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Switch Cases, Indication, And Locking (AREA)
US97734A 1926-03-26 1926-03-26 Circuit maker and interrupter Expired - Lifetime US1724840A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE340864D BE340864A (fr) 1926-03-26
US97734A US1724840A (en) 1926-03-26 1926-03-26 Circuit maker and interrupter
FR630059D FR630059A (fr) 1926-03-26 1927-03-02 Perfectionnements apportés aux interrupteurs et aux disjoncteurs particulièrement applicables aux contacteurs
GB7313/27A GB268329A (en) 1926-03-26 1927-03-16 Improvements in and relating to electric circuit makers and interrupters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US97734A US1724840A (en) 1926-03-26 1926-03-26 Circuit maker and interrupter

Publications (1)

Publication Number Publication Date
US1724840A true US1724840A (en) 1929-08-13

Family

ID=22264853

Family Applications (1)

Application Number Title Priority Date Filing Date
US97734A Expired - Lifetime US1724840A (en) 1926-03-26 1926-03-26 Circuit maker and interrupter

Country Status (4)

Country Link
US (1) US1724840A (fr)
BE (1) BE340864A (fr)
FR (1) FR630059A (fr)
GB (1) GB268329A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424308A (en) * 1942-09-15 1947-07-22 Westinghouse Electric Corp Contactor
US2788421A (en) * 1953-05-12 1957-04-09 Westinghouse Electric Corp Circuit breaker contact structure
US2944129A (en) * 1957-11-12 1960-07-05 Fed Pacific Electric Co Circuit breakers
US3005073A (en) * 1958-07-30 1961-10-17 Licentia Gmbh High speed circuit breaker
US3012118A (en) * 1958-10-29 1961-12-05 Ite Circuit Breaker Ltd Current limiting circuit breaker
US3068379A (en) * 1957-04-11 1962-12-11 Fed Pacific Electric Co Circuit protective apparatus
US3284601A (en) * 1963-09-10 1966-11-08 Galion Jeffrey Mfg Co Electrical contactor with removable arc chute
US3813619A (en) * 1962-05-18 1974-05-28 Gen Electric Current-limiting circuit breaker
US4339642A (en) * 1981-01-19 1982-07-13 General Electric Company Current switching member for circuit breakers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515596A (en) * 1946-10-16 1950-07-18 Electric Controller & Mfg Co Electric switch
US4259651A (en) * 1978-10-16 1981-03-31 Westinghouse Electric Corp. Current limiting circuit interrupter with improved operating mechanism

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424308A (en) * 1942-09-15 1947-07-22 Westinghouse Electric Corp Contactor
US2788421A (en) * 1953-05-12 1957-04-09 Westinghouse Electric Corp Circuit breaker contact structure
US3068379A (en) * 1957-04-11 1962-12-11 Fed Pacific Electric Co Circuit protective apparatus
US2944129A (en) * 1957-11-12 1960-07-05 Fed Pacific Electric Co Circuit breakers
US3005073A (en) * 1958-07-30 1961-10-17 Licentia Gmbh High speed circuit breaker
US3012118A (en) * 1958-10-29 1961-12-05 Ite Circuit Breaker Ltd Current limiting circuit breaker
US3813619A (en) * 1962-05-18 1974-05-28 Gen Electric Current-limiting circuit breaker
US3284601A (en) * 1963-09-10 1966-11-08 Galion Jeffrey Mfg Co Electrical contactor with removable arc chute
US4339642A (en) * 1981-01-19 1982-07-13 General Electric Company Current switching member for circuit breakers

Also Published As

Publication number Publication date
FR630059A (fr) 1927-11-23
GB268329A (en) 1927-07-14
BE340864A (fr)

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