US1768950A - Shading coil - Google Patents

Shading coil Download PDF

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Publication number
US1768950A
US1768950A US424570A US42457030A US1768950A US 1768950 A US1768950 A US 1768950A US 424570 A US424570 A US 424570A US 42457030 A US42457030 A US 42457030A US 1768950 A US1768950 A US 1768950A
Authority
US
United States
Prior art keywords
conductor
shading
coil
link
shading coil
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 - Lifetime
Application number
US424570A
Other languages
English (en)
Inventor
Leo C Frank
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric Corp
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 Electric Corp filed Critical Westinghouse Electric Corp
Priority to US424570A priority Critical patent/US1768950A/en
Application granted granted Critical
Publication of US1768950A publication Critical patent/US1768950A/en
Priority to FR710065D priority patent/FR710065A/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/10—Electromagnets; Actuators including electromagnets with armatures specially adapted for alternating current
    • H01F7/12—Electromagnets; Actuators including electromagnets with armatures specially adapted for alternating current having anti-chattering arrangements
    • H01F7/1205—Electromagnets; Actuators including electromagnets with armatures specially adapted for alternating current having anti-chattering arrangements having short-circuited conductors

Definitions

  • lily invention relates generally to shading coils for alternating-current magnets.
  • An object of my invention is to provide a shading coil which may be economically manutactured and readilv assembled by a machine operation.
  • a more specific object of my invention is to provide a shading coil that shallhe resilient and may be distorted. slightly in shape to permit expansion of the magnetic conductor on which it may be mounted Without subjecting the members of the coil to disrupting strains.
  • trated magnet comprises a magnetiieree core 10 of U-shape which is supported by a frame An armature is supported by an arm 13 which is pivotally mounted on the frame 11 by a pin 14.
  • a coil 15 is mounted on one leg of the core 10, d
  • the core member 19 is energized and deenergized cyclically.
  • the energization of the magnet effects the actuat tion of the armature 12 into engagement with the core member 10, hereby establishing a closed magnetic circuit.
  • shading coils 16 are mounted on the armature 12.
  • the shading coils are made from sections of seamless tubing, usually of brass or copper, but it will be readily understood that any other suitable non-magnetic conductor may be utilized.
  • a coil. constructed in this manner is resilient and may be distorted slightly in snaps.
  • a shading coil for the armature of an alternating-current magnet comprising an elongated link member of conducting material for mounting on the armature, said link member having its ends curved inwardly to present faces for resiliently engaging the armature to permit expansion of the latter Without imposing suiiieient strains on the link member to break it.
  • a shading coil for an alternating-current-magnet core comprising a link member of conducting material for mounting on the core, said link member having portions extending inwardly to provide resilient projections to engage the core.
  • a shading coil for a magnetic conductor comprising a link member for mounting on the conductor, said link member being curved inwardly to present a face to resiliently engage the conductor to permit a predetermined expansion of the conductor Without exerting sufficient strains to break the link.
  • a shading coil for a. magnetic conductor comprising a link of conducting material having a reentrant portion disposed to resiliently engage the magnetic conductor and to permit a predetermined expansion of the conductor Without exerting disrupting strains on the link.
  • a shading coil for a magnetic conductor comprising a link of conducting material having a plurality of reentrant portions disposed to resiliently engage the conductor and to permit a-predetermined expansion of the conductor withoutexerting disrupting strains on the'link.
  • a shading coil for a magnetic conductor comprising a section of seamless tubing so shaped as to constitute an elongated link for mounting on the conductor, said link having portions curved inwardly to resilientl; engage the conductor and to permit a predetermined expansion of the conductor Without producing suiiicient strains on the link to break it.
  • a shading coil for a magnetic conductor comprising a section of tubing having a substantially rectangular shape for mounting on the conductor, said section having portions curved inwardly to resiliently engage the conductor and to permit a predetermined expansion of the conductor without breaking the section of tubing.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
US424570A 1930-01-30 1930-01-30 Shading coil Expired - Lifetime US1768950A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US424570A US1768950A (en) 1930-01-30 1930-01-30 Shading coil
FR710065D FR710065A (fr) 1930-01-30 1931-01-27 Perfectionnements aux spires secondaires fermées des électro-aimants à courant alternatif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US424570A US1768950A (en) 1930-01-30 1930-01-30 Shading coil

Publications (1)

Publication Number Publication Date
US1768950A true US1768950A (en) 1930-07-01

Family

ID=23683079

Family Applications (1)

Application Number Title Priority Date Filing Date
US424570A Expired - Lifetime US1768950A (en) 1930-01-30 1930-01-30 Shading coil

Country Status (2)

Country Link
US (1) US1768950A (fr)
FR (1) FR710065A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466592A (en) * 1946-03-15 1949-04-05 Carlos C Cleverdon Solenoid with plunger
US2479344A (en) * 1944-10-26 1949-08-16 Picker X Ray Corp Waite Mfg Motor braking device
US2494349A (en) * 1946-08-21 1950-01-10 Gen Electric Method and means for forming stacked magnetic cores
US2521533A (en) * 1948-03-13 1950-09-05 Gen Electric Electric induction apparatus
US2558640A (en) * 1948-06-08 1951-06-26 Allis Chalmers Mfg Co Through conductor relay with detachable armature assembly
US3671903A (en) * 1971-02-08 1972-06-20 Gte Sylvania Inc Non-inflammable horizontal output transformer
US3766643A (en) * 1971-02-08 1973-10-23 W Arrington Method for fabricating a non-inflammable horizontal output transformer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479344A (en) * 1944-10-26 1949-08-16 Picker X Ray Corp Waite Mfg Motor braking device
US2466592A (en) * 1946-03-15 1949-04-05 Carlos C Cleverdon Solenoid with plunger
US2494349A (en) * 1946-08-21 1950-01-10 Gen Electric Method and means for forming stacked magnetic cores
US2521533A (en) * 1948-03-13 1950-09-05 Gen Electric Electric induction apparatus
US2558640A (en) * 1948-06-08 1951-06-26 Allis Chalmers Mfg Co Through conductor relay with detachable armature assembly
US3671903A (en) * 1971-02-08 1972-06-20 Gte Sylvania Inc Non-inflammable horizontal output transformer
US3766643A (en) * 1971-02-08 1973-10-23 W Arrington Method for fabricating a non-inflammable horizontal output transformer

Also Published As

Publication number Publication date
FR710065A (fr) 1931-08-18

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