GB517000A - Improvements relating to electromagnetic relays - Google Patents

Improvements relating to electromagnetic relays

Info

Publication number
GB517000A
GB517000A GB21111/38A GB2111138A GB517000A GB 517000 A GB517000 A GB 517000A GB 21111/38 A GB21111/38 A GB 21111/38A GB 2111138 A GB2111138 A GB 2111138A GB 517000 A GB517000 A GB 517000A
Authority
GB
United Kingdom
Prior art keywords
armature
relay
electromagnetic relays
polarity
winding
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
GB21111/38A
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.)
Siemens Mobility Ltd
Original Assignee
Westinghouse Brake and Signal Co 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 Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Publication of GB517000A publication Critical patent/GB517000A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H01H51/2281—Contacts rigidly combined with armature

Abstract

517,000. Electromagnetic relays. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd. July 15, 1938, No. 21111. Convention date, March 5, 1938. [Class 38 (v)] A polarized relay, responsive to current in one direction only. comprises poles 1, 2 connected by a core 3 carrying a winding 4, an armature 5 pivoted at 6, and a permanent magnet 9 arranged as shown. Gravity and the magnet 9 normally retain the armature in the position shown but current through the winding 4 in the right direction will oppose and over come the flux due to the permanent magnet and cause the armature to be attracted and contacts 7, 8 operated. The relay may be used for checking the correct operation of a polar relay which normally maintains the polarity of a circuit by effecting a change of connections every time the polarity of the supply is reversed.
GB21111/38A 1938-03-05 1938-07-15 Improvements relating to electromagnetic relays Expired GB517000A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US517000XA 1938-03-05 1938-03-05

Publications (1)

Publication Number Publication Date
GB517000A true GB517000A (en) 1940-01-17

Family

ID=21972836

Family Applications (2)

Application Number Title Priority Date Filing Date
GB21111/38A Expired GB517000A (en) 1938-03-05 1938-07-15 Improvements relating to electromagnetic relays
GB21112/38A Expired GB517001A (en) 1938-03-05 1938-07-15 Improvements relating to electromagnetic relays

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB21112/38A Expired GB517001A (en) 1938-03-05 1938-07-15 Improvements relating to electromagnetic relays

Country Status (2)

Country Link
FR (1) FR850666A (en)
GB (2) GB517000A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3157870A (en) * 1961-05-09 1964-11-17 Marquette Corp Method and means of voltage testing

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612544A (en) * 1948-09-16 1952-09-30 Sigma Instruments Inc Polarized electromagnetic device
US2716232A (en) * 1950-10-25 1955-08-23 Bell Telephone Labor Inc Flux modulated ringer
US2741728A (en) * 1952-08-29 1956-04-10 Ericsson Telephones Ltd Polarized electromagnetic devices
DE1086809B (en) * 1956-04-12 1960-08-11 Ericsson Telefon Ab L M Polarized magnet arrangement
US2982871A (en) * 1956-10-22 1961-05-02 Mckenzie & Holland Australia P Flasher relays
FR1295514A (en) * 1961-04-27 1962-06-08 Csf Polarized electromagnetic relay
DE1288683B (en) * 1963-08-21 1969-02-06 Hi G Inc Electromagnetic relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3157870A (en) * 1961-05-09 1964-11-17 Marquette Corp Method and means of voltage testing

Also Published As

Publication number Publication date
GB517001A (en) 1940-01-17
FR850666A (en) 1939-12-22

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