GB260627A - Improvements in or relating to railway signalling systems - Google Patents
Improvements in or relating to railway signalling systemsInfo
- Publication number
- GB260627A GB260627A GB27322/26A GB2732226A GB260627A GB 260627 A GB260627 A GB 260627A GB 27322/26 A GB27322/26 A GB 27322/26A GB 2732226 A GB2732226 A GB 2732226A GB 260627 A GB260627 A GB 260627A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- track
- train
- trains
- capacity
- 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
- 230000003534 oscillatory effect Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
- B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
- B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
- B61L3/12—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves
- B61L3/121—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves using magnetic induction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
260,627. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts Ges.). Oct. 31, 1925, [Convention date]. Track apparatus actuating signals on trains.- Signals on trains are controlled by a relay b in a train carried circuit containing a high-frequency source of current a and an iron-less inductor c but no condenser. A secondary inductor d<1> is placed on the track in an oscillatory circuit, including a capacity e<1> and a switch f<1> which is opened and closed in accordance with traffic conditions. The track device may comprise several independent circuits, including inductors d<1>, d<2>, d<3> tuned to different frequencies and controlled by coupled switches. The switches may shunt the capacity and coil-winding. A large increase of train circuit current takes place on passing a track device, the circuit of which is closed, even though the frequency of the train circuit varies considerably.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE260627X | 1925-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB260627A true GB260627A (en) | 1927-03-03 |
Family
ID=5970083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27322/26A Expired GB260627A (en) | 1925-10-31 | 1926-11-01 | Improvements in or relating to railway signalling systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB260627A (en) |
-
1926
- 1926-11-01 GB GB27322/26A patent/GB260627A/en not_active Expired
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