GB191410549A - Improvements in Relays connected with Electric Signalling in Mines and the like. - Google Patents
Improvements in Relays connected with Electric Signalling in Mines and the like.Info
- Publication number
- GB191410549A GB191410549A GB191410549DA GB191410549A GB 191410549 A GB191410549 A GB 191410549A GB 191410549D A GB191410549D A GB 191410549DA GB 191410549 A GB191410549 A GB 191410549A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cores
- parallel
- mines
- signalling
- electro
- 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
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
10,549. Davies, H., and Railing, M. J. April 29. Electro-magnetic switches.-Relays for use in mines or other places having explosive atmospheres are constructed with an electro-magnet having parallel cores A, a spring or gravity controlled armature H mounted on an axis F parallel with the cores so as to rotate in front of and parallel with the pole-faces, and shortcircuited windings or conducting - sleeves E placed on the cores A for the purpose of checking inductive rise of voltage and thus suppressing sparking at the signalling-contacts. A dipping-contact K and mercury-cup L make and break a local circuit between terminals N, and the relay coils are connected to a battery and the signalling-lines by terminals M. Platinum or other contacts may be used. In a modification, a bipolar magnet and armature replace the four-pole form shown.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB191410549T | 1914-04-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB191410549A true GB191410549A (en) | 1915-04-29 |
Family
ID=32583692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB191410549D Expired GB191410549A (en) | 1914-04-29 | 1914-04-29 | Improvements in Relays connected with Electric Signalling in Mines and the like. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB191410549A (en) |
-
1914
- 1914-04-29 GB GB191410549D patent/GB191410549A/en not_active Expired
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