GB665604A - Improvements relating to apparatus for signalling on and controlling trains from thetrack by inductive action - Google Patents
Improvements relating to apparatus for signalling on and controlling trains from thetrack by inductive actionInfo
- Publication number
- GB665604A GB665604A GB2349347A GB2349347A GB665604A GB 665604 A GB665604 A GB 665604A GB 2349347 A GB2349347 A GB 2349347A GB 2349347 A GB2349347 A GB 2349347A GB 665604 A GB665604 A GB 665604A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- tuned
- reed
- type
- contacts
- 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
- 230000001939 inductive effect Effects 0.000 title abstract 2
- 235000014676 Phragmites communis Nutrition 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
- B61L3/16—Continuous control along the route
- B61L3/22—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation
- B61L3/225—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation using separate conductors along the route
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
665,604. Train control and cab signalling system. THOMPSON, H. A. July 19, 1948. [Aug. 26, 1947] No. 23493/47. Class 105. A train control and cab signalling system comprises a telegraph-type relay actuated from a trackside line wire through an inductive collector A and amplifier B and serving to energize one or other of a set of tuned reed relays R1, R2, R3, the line wire being normally supplied with current of frequency f<SP>1</SP> to energize a silent-type tuned-reed relay R1 but at a distant signal at clear the line-wire current is of a frequency f<SP>2</SP> and actuates a gong-sounding tuned-reed relay R2 provided that a relay D normally held energized over contacts 12/13 of the silent-type tuned-reed relay has dropped, the circuit to the gong-sounding tuned-reed relay R2 including back contacts 21/20 of the relay D. A brake magnet P is in series with the relay D but is slow acting. The driver must therefore manually reset the relay D as soon as the distant signal has been passed so as to re-close front contacts 2/4 of the relay D which are in the circuit to the silent-type tunedreed relay R1. During passage of the distant signal at clear the relays D and P received current over contact 24/25 of the tuned-reed relay R2. but the armature of relay D was dropped beyond the magnetic range. A further gong-sounding tuned-reed relay R3 responsive to line wire current of frequencyÀ#<SP>3</SP> permits the signalman to give coded bell signals to the driver as for instance when stopped at a home signal at danger, it being noted that with line-wire current of frequency f<SP>3</SP> the magnet D and brake magnet P will be de-energized since the tuned-reed relays R1, R2 will not then be closing the contacts 12/13 or 24/25. Specifications 18443/14 and 12228/15, [both in Class 105], are referred to and in the Provisional Specification, Specification 165,493, [Class 105], also is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2349347A GB665604A (en) | 1947-08-26 | 1947-08-26 | Improvements relating to apparatus for signalling on and controlling trains from thetrack by inductive action |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2349347A GB665604A (en) | 1947-08-26 | 1947-08-26 | Improvements relating to apparatus for signalling on and controlling trains from thetrack by inductive action |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB665604A true GB665604A (en) | 1952-01-30 |
Family
ID=10196507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2349347A Expired GB665604A (en) | 1947-08-26 | 1947-08-26 | Improvements relating to apparatus for signalling on and controlling trains from thetrack by inductive action |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB665604A (en) |
-
1947
- 1947-08-26 GB GB2349347A patent/GB665604A/en not_active Expired
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