GB187775A - Improvements in control means for electric motors - Google Patents

Improvements in control means for electric motors

Info

Publication number
GB187775A
GB187775A GB2287521A GB2287521A GB187775A GB 187775 A GB187775 A GB 187775A GB 2287521 A GB2287521 A GB 2287521A GB 2287521 A GB2287521 A GB 2287521A GB 187775 A GB187775 A GB 187775A
Authority
GB
United Kingdom
Prior art keywords
control means
switch arm
electric motors
core
awav
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
GB2287521A
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.)
Cutler Hammer Manufacturing Co
Original Assignee
Cutler Hammer Manufacturing 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 Cutler Hammer Manufacturing Co filed Critical Cutler Hammer Manufacturing Co
Priority to GB2287521A priority Critical patent/GB187775A/en
Publication of GB187775A publication Critical patent/GB187775A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load

Landscapes

  • Control And Safety Of Cranes (AREA)
  • Earth Drilling (AREA)

Abstract

187,775. Igranic Electric Co., Ltd., (Cutler-Hammer Manufacturing Co.). Aug. 29, 1921. Electromagnetic switches.- An overload relay for motor controllers is provided with conjointly acting series and shunt windings 5, 6, and a movable core 19 adjustably connected to a dash. pot 22. In its upward movement, the core strikes a rightangled switch arm 25 awav from a stationary contact 26. The switch arm is maintained open by the winding 6 energized through a resistance.
GB2287521A 1921-08-29 1921-08-29 Improvements in control means for electric motors Expired GB187775A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2287521A GB187775A (en) 1921-08-29 1921-08-29 Improvements in control means for electric motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2287521A GB187775A (en) 1921-08-29 1921-08-29 Improvements in control means for electric motors

Publications (1)

Publication Number Publication Date
GB187775A true GB187775A (en) 1922-11-02

Family

ID=10186435

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2287521A Expired GB187775A (en) 1921-08-29 1921-08-29 Improvements in control means for electric motors

Country Status (1)

Country Link
GB (1) GB187775A (en)

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