GB158994A - Improvements in or relating to electromagnetic relays - Google Patents

Improvements in or relating to electromagnetic relays

Info

Publication number
GB158994A
GB158994A GB2836919A GB2836919A GB158994A GB 158994 A GB158994 A GB 158994A GB 2836919 A GB2836919 A GB 2836919A GB 2836919 A GB2836919 A GB 2836919A GB 158994 A GB158994 A GB 158994A
Authority
GB
United Kingdom
Prior art keywords
armature
alternating current
carrying
electromagnetic relays
magnetic
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
GB2836919A
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.)
Automatic Electric Co
Original Assignee
Automatic 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
Application filed by Automatic Electric Co filed Critical Automatic Electric Co
Priority to GB2836919A priority Critical patent/GB158994A/en
Publication of GB158994A publication Critical patent/GB158994A/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
    • H01H51/30—Electromagnetic relays specially adapted for actuation by ac

Landscapes

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

Abstract

158,994. Automatic Telephone Manufacturing Co., Ltd., and Hudd, A. E., (Automatic Electric Co.). Nov. 15, 1919. Electromagnets.-Electromagnetic relays for railway signalling systems using alternating current are rendered inoperative to stray direct currents by providing them with a divided magnetic structure the parts of which are embraced by closed-circuit conductors or windings so arranged that with direct current the armature normally lies cpposite points of equal magnetic potential and is unaffected, but with alternating current the equipotential line is displaced and the armature is operated. In the form shown, a core made up of flat laminµ has a central portion 1 carrying the magnetizing winding 2 and two divided portions 3, 4 carrying copper bands. A closed ring magnetic armature surrounds the coil and takes bearings in the frame; it is normally held in the position shown by an adjustable balance weight 27. The structure is bolted within a housing 19.
GB2836919A 1919-11-15 1919-11-15 Improvements in or relating to electromagnetic relays Expired GB158994A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2836919A GB158994A (en) 1919-11-15 1919-11-15 Improvements in or relating to electromagnetic relays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2836919A GB158994A (en) 1919-11-15 1919-11-15 Improvements in or relating to electromagnetic relays

Publications (1)

Publication Number Publication Date
GB158994A true GB158994A (en) 1921-02-15

Family

ID=10274554

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2836919A Expired GB158994A (en) 1919-11-15 1919-11-15 Improvements in or relating to electromagnetic relays

Country Status (1)

Country Link
GB (1) GB158994A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2805301A (en) * 1951-04-19 1957-09-03 Westinghouse Air Brake Co Electrical relays
US2882367A (en) * 1955-05-31 1959-04-14 Guardian Electric Mfg Co Relay
US2892058A (en) * 1954-01-26 1959-06-23 W N Borg Corp Relay
US2937249A (en) * 1955-05-31 1960-05-17 Guardian Electric Mfg Co Relay
US3012110A (en) * 1959-07-10 1961-12-05 Magnetic Devices Inc Electrical circuit control switch
US3035135A (en) * 1955-06-21 1962-05-15 Daco Instr Company Relays and solenoids

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2805301A (en) * 1951-04-19 1957-09-03 Westinghouse Air Brake Co Electrical relays
US2892058A (en) * 1954-01-26 1959-06-23 W N Borg Corp Relay
US2882367A (en) * 1955-05-31 1959-04-14 Guardian Electric Mfg Co Relay
US2937249A (en) * 1955-05-31 1960-05-17 Guardian Electric Mfg Co Relay
US3035135A (en) * 1955-06-21 1962-05-15 Daco Instr Company Relays and solenoids
US3012110A (en) * 1959-07-10 1961-12-05 Magnetic Devices Inc Electrical circuit control switch

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