GB189617A - Overload trip retarding or delaying device for electric circuit breakers or automatic switches - Google Patents

Overload trip retarding or delaying device for electric circuit breakers or automatic switches

Info

Publication number
GB189617A
GB189617A GB2793421A GB2793421A GB189617A GB 189617 A GB189617 A GB 189617A GB 2793421 A GB2793421 A GB 2793421A GB 2793421 A GB2793421 A GB 2793421A GB 189617 A GB189617 A GB 189617A
Authority
GB
United Kingdom
Prior art keywords
retarding
electric circuit
circuit breakers
spring
automatic switches
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
GB2793421A
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.)
ELECTRIC CONSTRUCTION CO
FREDERICK WILLIAM CLOSE
Original Assignee
ELECTRIC CONSTRUCTION CO
FREDERICK WILLIAM CLOSE
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 ELECTRIC CONSTRUCTION CO, FREDERICK WILLIAM CLOSE filed Critical ELECTRIC CONSTRUCTION CO
Priority to GB2793421A priority Critical patent/GB189617A/en
Publication of GB189617A publication Critical patent/GB189617A/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
    • H01H71/44—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay

Landscapes

  • Breakers (AREA)

Abstract

189,617. Electric Construction Co., Ltd., and Close, F. W. Oct. 21, 1921. Electrically-tripped switches. - To increase the current value at which tripping occurs, for instance in starting electric motors, the solenoid plunger C is pressed on by a braking device to prevent it from rising. A slider F having a knob f moves in a guide G against the action of a spring f<2>. It carries a second spring f<1> at its inner end which frictionally engages the plunger C when the knob f is pressed in. A pin f<3> and the closing-up of the spring f<2> limit the travel. In this way, a much larger current is required to raise the plunger.
GB2793421A 1921-10-21 1921-10-21 Overload trip retarding or delaying device for electric circuit breakers or automatic switches Expired GB189617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2793421A GB189617A (en) 1921-10-21 1921-10-21 Overload trip retarding or delaying device for electric circuit breakers or automatic switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2793421A GB189617A (en) 1921-10-21 1921-10-21 Overload trip retarding or delaying device for electric circuit breakers or automatic switches

Publications (1)

Publication Number Publication Date
GB189617A true GB189617A (en) 1922-12-07

Family

ID=10267626

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2793421A Expired GB189617A (en) 1921-10-21 1921-10-21 Overload trip retarding or delaying device for electric circuit breakers or automatic switches

Country Status (1)

Country Link
GB (1) GB189617A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0813218A2 (en) * 1996-06-14 1997-12-17 Felten & Guilleaume Austria Ag Trip device for overload circuit breaker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0813218A2 (en) * 1996-06-14 1997-12-17 Felten & Guilleaume Austria Ag Trip device for overload circuit breaker
EP0813218A3 (en) * 1996-06-14 1998-06-17 Felten & Guilleaume Austria Ag Trip device for overload circuit breaker
AU714838B2 (en) * 1996-06-14 2000-01-13 Felten & Guilleaume Austria Ag Tripping device for an overcurrent release

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