GB190502980A - Electric Light Maximum Demand Alarm Relay. - Google Patents
Electric Light Maximum Demand Alarm Relay.Info
- Publication number
- GB190502980A GB190502980A GB190502980DA GB190502980A GB 190502980 A GB190502980 A GB 190502980A GB 190502980D A GB190502980D A GB 190502980DA GB 190502980 A GB190502980 A GB 190502980A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electric light
- maximum demand
- alarm relay
- light maximum
- demand alarm
- 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
Landscapes
- Emergency Alarm Devices (AREA)
Abstract
2980. Wills, G. O. Feb. 13. Switches.-A device for closing an alarm circuit when the current in a lighting-circuit exceeds a certain amount consists of an electro-magnet wound with independent coils and an armature controlled by an adjustable spring and moving between adjustable stops a, b. The coils are connected to suit the maximum current required, and may be short-circuited by a plug switch d.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190502980T | 1905-02-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190502980A true GB190502980A (en) | 1905-09-07 |
Family
ID=32193839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190502980D Expired GB190502980A (en) | 1905-02-13 | 1905-02-13 | Electric Light Maximum Demand Alarm Relay. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190502980A (en) |
-
1905
- 1905-02-13 GB GB190502980D patent/GB190502980A/en not_active Expired
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