GB149673A - Improvements in electro-magnetic overload cut-outs - Google Patents

Improvements in electro-magnetic overload cut-outs

Info

Publication number
GB149673A
GB149673A GB2272720A GB2272720A GB149673A GB 149673 A GB149673 A GB 149673A GB 2272720 A GB2272720 A GB 2272720A GB 2272720 A GB2272720 A GB 2272720A GB 149673 A GB149673 A GB 149673A
Authority
GB
United Kingdom
Prior art keywords
electro
circuit
springs
core
motor
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
Application number
GB2272720A
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.)
Krupp Stahl AG
Fried Krupp AG
Original Assignee
Krupp Stahl AG
Fried Krupp AG
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 Krupp Stahl AG, Fried Krupp AG filed Critical Krupp Stahl AG
Publication of GB149673A publication Critical patent/GB149673A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/34—Electromagnetic mechanisms having two or more armatures controlled by a common winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Dc Machiner (AREA)

Abstract

149,673. Krupp Akt.-Ges., F. Aug. 7, 1919, [Convention date]. Electro-magnetic switches for breaking circuit in case of overload are constructed with a series coil a<2> and two movable cores B and E restrained by springs C and F..The core B which carries the main current brush b<2> normally bridging across contacts D, D<1> is not attracted until the core E has been previously drawn a certain distance towards it, so decreasing the magnetic reluctance. The circuit is thus broken quickly and decidedly. In using the device with a motor not provided with a.starting rheostat, the springs and other parts are so dimensioned that the circuit is not opened by the temporary rush of current when the motor is switched in.
GB2272720A 1919-08-08 1920-07-30 Improvements in electro-magnetic overload cut-outs Expired GB149673A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE342143T 1919-08-08

Publications (1)

Publication Number Publication Date
GB149673A true GB149673A (en) 1921-04-28

Family

ID=33459952

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2272720A Expired GB149673A (en) 1919-08-08 1920-07-30 Improvements in electro-magnetic overload cut-outs

Country Status (3)

Country Link
DE (1) DE342143C (en)
FR (1) FR521216A (en)
GB (1) GB149673A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2686238A (en) * 1950-03-30 1954-08-10 Mcgraw Electric Co Series capacitor protective device

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL76843C (en) * 1940-04-23
US2462753A (en) * 1943-09-18 1949-02-22 Line Material Co Circuit breaker
US2472048A (en) * 1943-11-01 1949-05-31 Joy Mfg Co Electric circuit controller
US2577307A (en) * 1949-11-18 1951-12-04 Exhibit Supply Company Mechanism for controlling the actuation of electromagnetic coils
DE947913C (en) * 1952-02-14 1956-08-23 Nikolaus Laing Electromagnetic circuit breaker
US2878338A (en) * 1954-01-07 1959-03-17 Rotax Ltd Electric switches
DE1197965B (en) * 1962-04-21 1965-08-05 Siemens Ag Magnetically acting quick release
DE3016467A1 (en) * 1980-04-29 1981-11-05 Christian Geyer GmbH & Co, 8500 Nürnberg Electromagnetic trip with instantaneous and delayed action - has concentric armatures with different bias springs acting on one operating rod
RU2449407C1 (en) * 2011-01-25 2012-04-27 Общество с ограниченной ответственностью "Технос" Electromagnetic relay with switching contacts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2686238A (en) * 1950-03-30 1954-08-10 Mcgraw Electric Co Series capacitor protective device

Also Published As

Publication number Publication date
FR521216A (en) 1921-07-08
DE342143C (en) 1921-10-13

Similar Documents

Publication Publication Date Title
GB149673A (en) Improvements in electro-magnetic overload cut-outs
GB457034A (en) Improvements in and relating to electro-magnetic interrupters
US1549734A (en) Relay
GB124041A (en) Improvements in and relating to Electrical Contact Making and Breaking Apparatus.
US2148193A (en) Vibrator
GB142341A (en) Improvements relating to induction coils
GB728616A (en) Improvements in or relating to holding magnets for electric switches
GB166213A (en) Improvements in or relating to electro-magnetic devices for use with alternating currents
GB191023831A (en) Improvements in Electro-magnets.
GB208073A (en) Improvements in electromagnetic interrupters and like apparatus
GB116981A (en) Automatic Electric Switching Apparatus.
GB185722A (en) Improvements in electric circuit controllers
GB275208A (en) Improvements in and relating to electric circuit interrupters
GB123766A (en) Improvements in Alternating Current Limiting Apparatus.
GB118984A (en) Improvements in or relating to Electrical Relays.
GB625128A (en) Improvements in means for controlling the operation and release of electro-magnetic relays
GB147592A (en) Overload electric switches
GB191410549A (en) Improvements in Relays connected with Electric Signalling in Mines and the like.
GB244703A (en) Improvements in and relating to electric arc-welding apparatus
GB168884A (en) An improved electric maximum automatic cut-out
GB260004A (en) Improvements in and relating to electromagnetic devices
GB190507606A (en) Improvements in and relating to Electro-magnetic Cut-outs or Switches.
GB191510231A (en) Improvements in Vibrators for Induction Coils and the like.
GB191418497A (en) Improvements in Relays for Electric Voltage Regulators.
GB181265A (en) Improvements in and relating to electric motor controllers