GB392981A - Improvements in and relating to electric motor controllers - Google Patents
Improvements in and relating to electric motor controllersInfo
- Publication number
- GB392981A GB392981A GB3342631A GB3342631A GB392981A GB 392981 A GB392981 A GB 392981A GB 3342631 A GB3342631 A GB 3342631A GB 3342631 A GB3342631 A GB 3342631A GB 392981 A GB392981 A GB 392981A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drum
- zero
- returned
- movement
- positions
- 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
- 230000000694 effects Effects 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 230000003313 weakening effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/02—Details of starting control
- H02P1/04—Means for controlling progress of starting sequence in dependence upon time or upon current, speed, or other motor parameter
- H02P1/06—Manually-operated multi-position starters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
- Braking Arrangements (AREA)
Abstract
392,981. Drum controllers. EVANS, R. M. L., Roselands, Harboro' Road, Ashton-on- Mersey, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Dec. 2, 1931, No. 33426. [Class 38 (iii).] A controller comprises a main drum 1 actuable to various positions on either side of a zero by a handle 21, and retained in such positions by a notched plate 22, which may be devoid of notches at the two extreme positions, so that the drum is returned to an intermediate position by a spring 35 when the handle 21 is released from an extreme position. An auxiliary drum 2 is urged away from its zero position by a weighted lever 62, but is restrained from movement by a roller 71 thereon engaging a cam 70 of the drum 1, until the drum 1 is displaced, and is returned to zero when the drum 1 is returned to zero. The speed of movement of the drum 2 is limited by a pendulum escapement device 82, 86. Movement of drum 2 from its zero position can be prevented by a coil 100 energized by the back E.M.F. of the motor, so that upon sudden reversal of the drum 1, the drum 2 cannot move from its zero position until the motor has slowed down sufficiently. The drum 1 may prepare the armature and field circuits and effect release of a brake, and the drum 2 may connect the circuits to the power supply, exclude resistance, and in the extreme positions cause field weakening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3342631A GB392981A (en) | 1931-12-02 | 1931-12-02 | Improvements in and relating to electric motor controllers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3342631A GB392981A (en) | 1931-12-02 | 1931-12-02 | Improvements in and relating to electric motor controllers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB392981A true GB392981A (en) | 1933-06-01 |
Family
ID=10352806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3342631A Expired GB392981A (en) | 1931-12-02 | 1931-12-02 | Improvements in and relating to electric motor controllers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB392981A (en) |
-
1931
- 1931-12-02 GB GB3342631A patent/GB392981A/en not_active Expired
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