GB178769A - Improvements in operating circuit and switch arrangements for electric car-motors - Google Patents
Improvements in operating circuit and switch arrangements for electric car-motorsInfo
- Publication number
- GB178769A GB178769A GB1884621A GB1884621A GB178769A GB 178769 A GB178769 A GB 178769A GB 1884621 A GB1884621 A GB 1884621A GB 1884621 A GB1884621 A GB 1884621A GB 178769 A GB178769 A GB 178769A
- Authority
- GB
- United Kingdom
- Prior art keywords
- controller
- motors
- circuit
- switch
- operating circuit
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0066—Auxiliary contact devices
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Lock And Its Accessories (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
178,769. Dehn, F. B., (National Pneumatic Co.). July 12, 1921. Controllers, with auxiliary switches. - In traction motor control, in order to prevent current from being turned on when the motors are not protected by the full starting resistance, and when the doors of a car are open, the driver's controller, otherwise of ordinary construction, is furnished with an additional finger 5 and a corresponding short segment in the first resistance position, whereby connection is temporarily made to an electromagnet 12 adapted to close a line switch 20 in series with the trolly 16. The operating circuit of the magnet 12 is taken through switches 14 so that it can only be completed when the doors of the cars are closed. After the controller has passed to the next resistance position, and providing time has been allowed for the electromagnet 12 to work, the magnet remains connected in a hold-on circuit by way of an auxiliary switch 25. A trip switch 13 is adapted to open the circuit when the direction of movement of the controller handle is reversed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1884621A GB178769A (en) | 1921-07-12 | 1921-07-12 | Improvements in operating circuit and switch arrangements for electric car-motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1884621A GB178769A (en) | 1921-07-12 | 1921-07-12 | Improvements in operating circuit and switch arrangements for electric car-motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB178769A true GB178769A (en) | 1922-04-27 |
Family
ID=10119397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1884621A Expired GB178769A (en) | 1921-07-12 | 1921-07-12 | Improvements in operating circuit and switch arrangements for electric car-motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB178769A (en) |
-
1921
- 1921-07-12 GB GB1884621A patent/GB178769A/en not_active Expired
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