GB929017A - Improvements relating to direct current track circuits for railway signalling systems - Google Patents
Improvements relating to direct current track circuits for railway signalling systemsInfo
- Publication number
- GB929017A GB929017A GB2462859A GB2462859A GB929017A GB 929017 A GB929017 A GB 929017A GB 2462859 A GB2462859 A GB 2462859A GB 2462859 A GB2462859 A GB 2462859A GB 929017 A GB929017 A GB 929017A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pair
- circuit
- direct current
- signalling systems
- railway signalling
- 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 abstract 2
- 230000002452 interceptive effect Effects 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
- B61L1/186—Use of rectified alternating current
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
929,017. Track circuit feed sets. WESTING- HOUSE BRAKE & SIGNAL CO. Ltd. July 15, 1960 [July 17, 1959], No. 24628/59. Class 105. In a D.C. track circuit feed set 16 for use in railway signalling systems in which only one rail 12 is divided by insulated joints 13, 14 into track circuit sections, e.g. section A, whilst the other rail 11 is continuous to provide a return circuit for an A.C. traction system, the direct current is derived from an A.C. supply via a transformer 17 and full-wave rectifier 19 and the alternating traction return current is prevented from interfering with the operation of the feed set by series chokes 22, 21, which form a high impedance at the traction frequency and a low valve shunt resistor 20. The resistor 20 is provided with an outer pair of terminals and an inner pair close to, but separate from the outer pair. The rectifier circuit is connected to one pair of terminals and the output circuit to the other pair.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2462859A GB929017A (en) | 1959-07-17 | 1959-07-17 | Improvements relating to direct current track circuits for railway signalling systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2462859A GB929017A (en) | 1959-07-17 | 1959-07-17 | Improvements relating to direct current track circuits for railway signalling systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB929017A true GB929017A (en) | 1963-06-19 |
Family
ID=10214698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2462859A Expired GB929017A (en) | 1959-07-17 | 1959-07-17 | Improvements relating to direct current track circuits for railway signalling systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB929017A (en) |
-
1959
- 1959-07-17 GB GB2462859A patent/GB929017A/en not_active Expired
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