GB239158A - An improved electric drive, more particularly for hoisting apparatus - Google Patents
An improved electric drive, more particularly for hoisting apparatusInfo
- 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
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.
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) |
-
1925
- 1925-01-05 GB GB315/25A patent/GB239158A/en not_active Expired
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