GB289536A - Improvements relating to railway signalling systems of the track circuit type - Google Patents
Improvements relating to railway signalling systems of the track circuit typeInfo
- Publication number
- GB289536A GB289536A GB251127A GB251127A GB289536A GB 289536 A GB289536 A GB 289536A GB 251127 A GB251127 A GB 251127A GB 251127 A GB251127 A GB 251127A GB 289536 A GB289536 A GB 289536A
- Authority
- GB
- United Kingdom
- Prior art keywords
- current
- alternating
- low voltage
- relay
- coil
- 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
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- 229910052786 argon Inorganic materials 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
- 229910052754 neon Inorganic materials 0.000 abstract 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 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
- B61L1/182—Use of current of indifferent sort or a combination of different current types
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
289,536. Peter, L. H., and Westing- house Brake & Saxby Signal Co., Ltd. Jan. 28, 1927. Electrical systems, automatic. - Signalling current at low voltage, either alternating or unidirectional, is supplied to the track sections from a high voltage direct current power circuit 2, 3 by converting the direct current into interrupted or pulsating current, as by neon, argon or mercury vapour vacuum tubes 5, which is supplied to a step-down transformer 7 the low voltage secondary of which is connected to the railcircuits. Fig. 1 shows a rectifier device 11 for supplying low voltage unidirectional current to the track rails, and a direct current relay 18 connected directly to the rails. Fig. 2 shows an alternating current system using a two-coil alternating-current relay, one coil 21 of which is energized from the rail circuit and the other 20 from the secondary of transformer 7. A system is also described in which the secondary coil of transformer 7 supplies current through a variable condenser to the track rails, the relay at the other end of the section being arranged as described in Specification 289,537.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB251127A GB289536A (en) | 1927-01-28 | 1927-01-28 | Improvements relating to railway signalling systems of the track circuit type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB251127A GB289536A (en) | 1927-01-28 | 1927-01-28 | Improvements relating to railway signalling systems of the track circuit type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB289536A true GB289536A (en) | 1928-04-30 |
Family
ID=9740841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB251127A Expired GB289536A (en) | 1927-01-28 | 1927-01-28 | Improvements relating to railway signalling systems of the track circuit type |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB289536A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1036902B (en) * | 1954-09-10 | 1958-08-21 | Emile Marcel Pierre Leroy | Circuit arrangement for track circuits |
-
1927
- 1927-01-28 GB GB251127A patent/GB289536A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1036902B (en) * | 1954-09-10 | 1958-08-21 | Emile Marcel Pierre Leroy | Circuit arrangement for track circuits |
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