GB564800A - Improvements relating to railway track circuit apparatus - Google Patents
Improvements relating to railway track circuit apparatusInfo
- Publication number
- GB564800A GB564800A GB1526942A GB1526942A GB564800A GB 564800 A GB564800 A GB 564800A GB 1526942 A GB1526942 A GB 1526942A GB 1526942 A GB1526942 A GB 1526942A GB 564800 A GB564800 A GB 564800A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnet
- vane
- contacts
- rotation
- 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
- 230000006698 induction Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000011435 rock Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/08—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only
- B61L23/14—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only automatically operated
- B61L23/16—Track circuits specially adapted for section blocking
- B61L23/166—Track circuits specially adapted for section blocking using alternating current
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Control Of Turbines (AREA)
Abstract
564,800. Electromagnetic relays for railway tracks. TOMLINSON, A. V. (Union Switch & Signal Co.). Oct. 30, 1942, No. 15269. [Class 105] [Also in Group XXXVII] When a train enters or leaves a section 1, 1a, the sudden change of current in the coil 7 of an induction relay rotates a conducting vane 8 which passes between the poles of a permanent magnet 20 so that' this rocks about its axis 21 and operates contacts 24, 25. A slow rotation of the vane 8 due to change in resistance of the track because of rain, for example, will cause no movement of the magnet 20. When the coil 7 is energized, the vane rotates into a position such as that shown against the action of a biassing weight and closes other contacts 14, 15. In the form shown, this rotation of the vane will cause a momentary clockwise rocking of the magnet 20 so that contacts 23, 24 are closed momentarily, actuating a relay TRS with a maintaining circuit which is later broken when contacts 25, 26 are separated by the counter-clockwise rotation of the magnet 20 due to the release of the vane 8 due to the de-energization of the magnet 7 due to a train entering the section. In a modification, Fig. 3 (not shown), the magnet 20 is retained in its displaced position by a dead-centre snap device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1526942A GB564800A (en) | 1942-10-30 | 1942-10-30 | Improvements relating to railway track circuit apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1526942A GB564800A (en) | 1942-10-30 | 1942-10-30 | Improvements relating to railway track circuit apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB564800A true GB564800A (en) | 1944-10-13 |
Family
ID=10056053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1526942A Expired GB564800A (en) | 1942-10-30 | 1942-10-30 | Improvements relating to railway track circuit apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB564800A (en) |
-
1942
- 1942-10-30 GB GB1526942A patent/GB564800A/en not_active Expired
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