GB382661A - Improvements in or relating to the control of electric motors - Google Patents
Improvements in or relating to the control of electric motorsInfo
- Publication number
- GB382661A GB382661A GB2177831A GB2177831A GB382661A GB 382661 A GB382661 A GB 382661A GB 2177831 A GB2177831 A GB 2177831A GB 2177831 A GB2177831 A GB 2177831A GB 382661 A GB382661 A GB 382661A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- stop
- cam
- commutator
- lift
- 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
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
- B66B1/44—Means for stopping the cars, cages, or skips at predetermined levels and for taking account of disturbance factors, e.g. variation of load weight
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Dc Machiner (AREA)
Abstract
382,661. Controlling motors. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and ADKINS, B., 13, Fisher Avenue, Paddox, Rugby. July 30, 1931, No. 21778. [Class 35.] A control system for stopping a commutator A.C. motor 2 driving a lift &c., comprises a stop 14 for the brush-shifting gear of the motor, which stop is positioned automatically according to the load on the motor so that, when the gear is returned towards its slow speed position, it is arrested by the stop in such a position that the lowest speed of the motor is independent of the load, whereupon the application of a brake stops the lift in a definite position. The stop 14 is moved by a cam 12 operated by a torque motor 8, which is energized according to the secondary current of the motor 2 through a transformer 7, and operates against a spring 13. Means are provided to retain the cam in the position it attains during full-speed running of the motor 2 until after the latter has come to rest. The torque motor 8 is shown as being of the polyphase commutator type, but it may be an induction or a series commutator motor. The cam 12 may be operated by movement of the stator of the main motor 2 against the action of a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2177831A GB382661A (en) | 1931-07-30 | 1931-07-30 | Improvements in or relating to the control of electric motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2177831A GB382661A (en) | 1931-07-30 | 1931-07-30 | Improvements in or relating to the control of electric motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB382661A true GB382661A (en) | 1932-10-31 |
Family
ID=10168634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2177831A Expired GB382661A (en) | 1931-07-30 | 1931-07-30 | Improvements in or relating to the control of electric motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB382661A (en) |
-
1931
- 1931-07-30 GB GB2177831A patent/GB382661A/en not_active Expired
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