GB492694A - Improvements in or relating to railway signalling systems - Google Patents
Improvements in or relating to railway signalling systemsInfo
- Publication number
- GB492694A GB492694A GB889137A GB889137A GB492694A GB 492694 A GB492694 A GB 492694A GB 889137 A GB889137 A GB 889137A GB 889137 A GB889137 A GB 889137A GB 492694 A GB492694 A GB 492694A
- Authority
- GB
- United Kingdom
- Prior art keywords
- short
- railway signalling
- counting magnet
- signalling systems
- relating
- 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 3
- 101100152865 Danio rerio thraa gene Proteins 0.000 abstract 1
- 101150117196 tra-1 gene Proteins 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
- B61L1/16—Devices for counting axles; Devices for counting vehicles
- B61L1/167—Circuit details
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
492,694. Railway signalling systems. STANDARD TELEPHONES & CABLES, Ltd., and BROWN, A. March 25, 1937, No. 8891. [Class 105] In a railway signalling system in which the axles are counted by a treadle-controlled relay TRA which on dropping effects the energization of the counting magnet CM, a full energization of the counting magnet (necessary for an accurate one-step movement of the mechanism) is obtained, even if the treadle operation is clipped short as at high speeds, by maintaining the relay TRA dropped by a short-circuit shunt formed by its own back contact tra1 in series with an interrupter contact INT of the counting magnet CM. When the full movement of the counting magnet mechanism is reached the short-circuit shunt is broken and the relay TRA is re-energized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB889137A GB492694A (en) | 1937-03-25 | 1937-03-25 | Improvements in or relating to railway signalling systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB889137A GB492694A (en) | 1937-03-25 | 1937-03-25 | Improvements in or relating to railway signalling systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB492694A true GB492694A (en) | 1938-09-26 |
Family
ID=9861280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB889137A Expired GB492694A (en) | 1937-03-25 | 1937-03-25 | Improvements in or relating to railway signalling systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB492694A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3169734A (en) * | 1959-04-21 | 1965-02-16 | Fryba Josef | Rail track traffic indicator system |
-
1937
- 1937-03-25 GB GB889137A patent/GB492694A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3169734A (en) * | 1959-04-21 | 1965-02-16 | Fryba Josef | Rail track traffic indicator system |
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