GB819376A - Improvements in electro-magnetic overload units for electrical apparatus - Google Patents

Improvements in electro-magnetic overload units for electrical apparatus

Info

Publication number
GB819376A
GB819376A GB3202356A GB3202356A GB819376A GB 819376 A GB819376 A GB 819376A GB 3202356 A GB3202356 A GB 3202356A GB 3202356 A GB3202356 A GB 3202356A GB 819376 A GB819376 A GB 819376A
Authority
GB
United Kingdom
Prior art keywords
armature
dashpot
washer
collar
relation
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
GB3202356A
Inventor
Edgar Pearson
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.)
Colne Switchgear K & W Ltd
Original Assignee
Colne Switchgear K & W Ltd
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 Colne Switchgear K & W Ltd filed Critical Colne Switchgear K & W Ltd
Priority to GB3202356A priority Critical patent/GB819376A/en
Publication of GB819376A publication Critical patent/GB819376A/en
Expired legal-status Critical Current

Links

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
    • H01H77/06—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 electromagnetic opening

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Abstract

819,376. Electromagnetic switches. COLNE SWITCHGEAR (K. & W.) Ltd. Oct. 21, 1957 [Oct. 20, 1956], No. 32023/56. Class 38 (5). A time-lag overload device has separate adjustment for armature position in relation to the operating coil, and for a dashpot in relation to a piston attached to the armature. A magnetic casing B encloses the coil C and supports a non-magnetic member D by means of a screw D<SP>2</SP> and adjusting nut D<SP>3</SP> with compression spring D<SP>4</SP>. A tubular part D<SP>1</SP> extends into the core and encloses the armature A which has an extension rod A<SP>1</SP> and collar A<SP>2</SP> with a washer A<SP>3</SP> movable between the collar A<SP>2</SP> and a circlip A4. When the armature is attracted the collar A<SP>2</SP> and washer A<SP>3</SP> form a piston in the smallerdiameter part of the dashpot H screwed into the member D. The current setting is adjusted by means of the nut D<SP>3</SP> moving the member D and with it the armature A in relation to the coil C. The time-lag is adjusted by screwing the dashpot H into or out of the member D and thereby altering the amount of travel of the washer in the smaller-diameter part of the dashpot. The armature, when attracted, strikes a pin E which opens spring-biased contacts F<SP>1</SP>. In Figs. 2 and 3 (not shown), three units are described having calibrated scales for current and time-lag settings form a three-phase device with their pins E acting on a common pivoted plate which operates tripping contacts and has a latch to retain it in the operated position.
GB3202356A 1956-10-20 1956-10-20 Improvements in electro-magnetic overload units for electrical apparatus Expired GB819376A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3202356A GB819376A (en) 1956-10-20 1956-10-20 Improvements in electro-magnetic overload units for electrical apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3202356A GB819376A (en) 1956-10-20 1956-10-20 Improvements in electro-magnetic overload units for electrical apparatus

Publications (1)

Publication Number Publication Date
GB819376A true GB819376A (en) 1959-09-02

Family

ID=10331898

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3202356A Expired GB819376A (en) 1956-10-20 1956-10-20 Improvements in electro-magnetic overload units for electrical apparatus

Country Status (1)

Country Link
GB (1) GB819376A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5663700A (en) * 1995-08-25 1997-09-02 Trombetta Corporation Sound dampening solenoid
WO2010043977A2 (en) 2008-10-13 2010-04-22 Institute For Research In Biomedicine Dengue virus neutralizing antibodies and uses thereof
WO2013011347A1 (en) 2011-07-18 2013-01-24 Institute For Research In Biomedicine Neutralizing anti-influenza a virus antibodies and uses thereof
US9368266B2 (en) 2014-07-18 2016-06-14 Trumpet Holdings, Inc. Electric solenoid structure having elastomeric biasing member

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5663700A (en) * 1995-08-25 1997-09-02 Trombetta Corporation Sound dampening solenoid
WO2010043977A2 (en) 2008-10-13 2010-04-22 Institute For Research In Biomedicine Dengue virus neutralizing antibodies and uses thereof
WO2013011347A1 (en) 2011-07-18 2013-01-24 Institute For Research In Biomedicine Neutralizing anti-influenza a virus antibodies and uses thereof
US9368266B2 (en) 2014-07-18 2016-06-14 Trumpet Holdings, Inc. Electric solenoid structure having elastomeric biasing member

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