GB160589A - Improvements in or relating to alternating current track circuits for railway signalling - Google Patents
Improvements in or relating to alternating current track circuits for railway signallingInfo
- Publication number
- GB160589A GB160589A GB20920A GB20920A GB160589A GB 160589 A GB160589 A GB 160589A GB 20920 A GB20920 A GB 20920A GB 20920 A GB20920 A GB 20920A GB 160589 A GB160589 A GB 160589A
- Authority
- GB
- United Kingdom
- Prior art keywords
- current
- alternating
- alternating current
- relating
- current track
- 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
- 230000011664 signaling Effects 0.000 title 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/18—Railway track circuits
- B61L1/181—Details
- B61L1/187—Use of alternating current
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
160,589. Automatic Telephone Manufacturing Co., Ltd., and Roseby, P. N. Jan. 3, 1920. Drawings to Specification. Electrical systems, automatic. - In order to prevent the flow of direct current for the power supply through alternating-current signalling- apparatus, apparatus offering a high resistance to direct current and a low resistance to alternating current is connected in series with the alternating- current apparatus. This may be a condenser, or a small motor-generator for applying a counterelectromotive force, or preferably one or more electrolytic cells each comprising a pair of similar electrodes immersed in an electrolyte to which they are chemically inert. The preferred cell has carbon electrodes in dilute sulphuric acid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB20920A GB160589A (en) | 1920-01-03 | 1920-01-03 | Improvements in or relating to alternating current track circuits for railway signalling |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB20920A GB160589A (en) | 1920-01-03 | 1920-01-03 | Improvements in or relating to alternating current track circuits for railway signalling |
Publications (1)
Publication Number | Publication Date |
---|---|
GB160589A true GB160589A (en) | 1921-03-31 |
Family
ID=9700310
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20920A Expired GB160589A (en) | 1920-01-03 | 1920-01-03 | Improvements in or relating to alternating current track circuits for railway signalling |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB160589A (en) |
-
1920
- 1920-01-03 GB GB20920A patent/GB160589A/en not_active Expired
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