FR519952A - Improvements to devices for controlling electric motors - Google Patents

Improvements to devices for controlling electric motors

Info

Publication number
FR519952A
FR519952A FR519952DA FR519952A FR 519952 A FR519952 A FR 519952A FR 519952D A FR519952D A FR 519952DA FR 519952 A FR519952 A FR 519952A
Authority
FR
France
Prior art keywords
devices
electric motors
controlling electric
controlling
motors
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
Other languages
French (fr)
Inventor
John Arthur Hirst
Percy Smith Brook
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR519952A publication Critical patent/FR519952A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
FR519952D 1919-07-10 1920-07-09 Improvements to devices for controlling electric motors Expired FR519952A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34621A GB166084A (en) 1919-07-10 1919-07-10 Improvements in and relating to switch gear for controlling electric motors

Publications (1)

Publication Number Publication Date
FR519952A true FR519952A (en) 1921-06-18

Family

ID=9702766

Family Applications (1)

Application Number Title Priority Date Filing Date
FR519952D Expired FR519952A (en) 1919-07-10 1920-07-09 Improvements to devices for controlling electric motors

Country Status (2)

Country Link
FR (1) FR519952A (en)
GB (1) GB166084A (en)

Also Published As

Publication number Publication date
GB166084A (en) 1921-07-11

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