GB548926A - Improvements in electrical acceleration and/or deceleration governing means - Google Patents
Improvements in electrical acceleration and/or deceleration governing meansInfo
- Publication number
- GB548926A GB548926A GB761041A GB761041A GB548926A GB 548926 A GB548926 A GB 548926A GB 761041 A GB761041 A GB 761041A GB 761041 A GB761041 A GB 761041A GB 548926 A GB548926 A GB 548926A
- Authority
- GB
- United Kingdom
- Prior art keywords
- speed
- brake
- control
- transformer
- controlling
- 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
- B66B1/12—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. handles or levers, located at a control station for direct control movements, e.g. electric mining-hoist control systems
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Stopping Of Electric Motors (AREA)
- Braking Arrangements (AREA)
Abstract
548,926. Automatic control systems for winding apparatus &c. SMITH, G. D., HILL, E. P., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. June 16, 1941, No. 7610. [Class 38 (iv)] Speed.-Acceleration and retardation are controlled by applying to the primary winding of a transformer M1 a D.C. voltage proportional to the speed and connecting one secondary of the transformer to the control coil A of a compounding exciter GE of the magnetic bridge type as described in Specification 491,743, a metadyne or other means whereby a rapid development of output or trigger action is obtained for controlling the operation of speed control mechanism, such as a torque-motor MA releasing, applying or controlling a brake, either directly or through a fluid pressure or other servomotor. The tachometer generator GA is connected through a rectifier DR1 to the transformer MI to eliminate the factor of direction of motion. If it is desired to control acceleration or retardation separately a rectifier is included in the secondary circuit. Hunting may be checked by a rheostat coupled to the speed controlling mechanism and connected in circuit with a field coil of the exciter CE or the like. Fig. 1 shows a braking control in which the torque motor is associated by linkage with a manual brake lever BL, an emergency speed control solenoid ES and a valve BCV operating a servomotor to apply a brake when moved downwardly, the torque motor MA operating against a spring S to relieve the brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB761041A GB548926A (en) | 1941-06-16 | 1941-06-16 | Improvements in electrical acceleration and/or deceleration governing means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB761041A GB548926A (en) | 1941-06-16 | 1941-06-16 | Improvements in electrical acceleration and/or deceleration governing means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB548926A true GB548926A (en) | 1942-10-29 |
Family
ID=9836422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB761041A Expired GB548926A (en) | 1941-06-16 | 1941-06-16 | Improvements in electrical acceleration and/or deceleration governing means |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB548926A (en) |
-
1941
- 1941-06-16 GB GB761041A patent/GB548926A/en not_active Expired
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