GB302979A - Improvements relating to track signalling systems for railways and the like - Google Patents
Improvements relating to track signalling systems for railways and the likeInfo
- Publication number
- GB302979A GB302979A GB2523127A GB2523127A GB302979A GB 302979 A GB302979 A GB 302979A GB 2523127 A GB2523127 A GB 2523127A GB 2523127 A GB2523127 A GB 2523127A GB 302979 A GB302979 A GB 302979A
- Authority
- GB
- United Kingdom
- Prior art keywords
- track
- railways
- rectifiers
- improvements relating
- relay
- 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
- 230000005611 electricity Effects 0.000 abstract 1
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 150000004706 metal oxides Chemical class 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)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
302,979. Peter, L. H., and Westing- house Brake & Saxby Signal Co., Ltd. Sept. 24, 1927. Regulation, automatic.-The voltage across the terminals of a track relay is maintained substantially constant irrespective of changes in track-ballast resistance by connecting one or more rectifying devices across the rails at a suitable position. The Figure shows two rectifiers 12, 13, oppositely arranged so as to serve as a shunt across the relay 7 during both half-waves of the alternating current supplied to the track rails 1 from a transformer 3 through an adjustable impedance 6. The rectifiers are preferably of the metal oxide type described in Specification 257,305, [Class 37, Electricity, Measuring &c.].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2523127A GB302979A (en) | 1927-09-24 | 1927-09-24 | Improvements relating to track signalling systems for railways and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2523127A GB302979A (en) | 1927-09-24 | 1927-09-24 | Improvements relating to track signalling systems for railways and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB302979A true GB302979A (en) | 1928-12-24 |
Family
ID=10224323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2523127A Expired GB302979A (en) | 1927-09-24 | 1927-09-24 | Improvements relating to track signalling systems for railways and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB302979A (en) |
-
1927
- 1927-09-24 GB GB2523127A patent/GB302979A/en not_active Expired
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