GB239158A - An improved electric drive, more particularly for hoisting apparatus - Google Patents

An improved electric drive, more particularly for hoisting apparatus

Info

Publication number
GB239158A
GB239158A GB315/25A GB31525A GB239158A GB 239158 A GB239158 A GB 239158A GB 315/25 A GB315/25 A GB 315/25A GB 31525 A GB31525 A GB 31525A GB 239158 A GB239158 A GB 239158A
Authority
GB
United Kingdom
Prior art keywords
motor
resistance
stator
rotor
drive
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
GB315/25A
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.)
Schindler et Cie
Original Assignee
Schindler et Cie
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 Schindler et Cie filed Critical Schindler et Cie
Publication of GB239158A publication Critical patent/GB239158A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/02—Control systems without regulation, i.e. without retroactive action
    • B66B1/06—Control systems without regulation, i.e. without retroactive action electric
    • B66B1/08—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. handles or levers, in the cars or cages for direct control of movements

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

239,158. Schindler et Cie. Aug. 29, 1924, [Convention date]. Systems for alternating-current motors only.- For use in hoisting, two alternating-current motors M<1>, M<2> coupled to a single shaft 13 are provided with control arrangements whereby one motor alone can take up the drive or the two can run in cascade or parallel as required, one motor always remaining connected to the main. For cascade running the stator 3 of the motor M<1> is connected to the mains, the two rotors 7 and 9 are connected together and in parallel with a resistance 15, and the stator S of the motor M<2> is connected to a resistance 14. If the stator 8 is connected to the mains through a switch 16. and if resistance 17 is also inserted in series with the rotor 4, the drive is virtually taken up by the motor M<2> alone. If the resistance 17 is inserted in the rotor 9 and taken out of the rotor 4, the drive is virtually taken up by the motor M<1>. An electromagnetic brake controlled by a centrifugal switch may be added to the arrangement.
GB315/25A 1924-08-29 1925-01-05 An improved electric drive, more particularly for hoisting apparatus Expired GB239158A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH239158X 1924-08-29

Publications (1)

Publication Number Publication Date
GB239158A true GB239158A (en) 1926-02-18

Family

ID=4461045

Family Applications (1)

Application Number Title Priority Date Filing Date
GB315/25A Expired GB239158A (en) 1924-08-29 1925-01-05 An improved electric drive, more particularly for hoisting apparatus

Country Status (1)

Country Link
GB (1) GB239158A (en)

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