GB1483642A - Interlocking track circuits - Google Patents
Interlocking track circuitsInfo
- Publication number
- GB1483642A GB1483642A GB33803/74A GB3380374A GB1483642A GB 1483642 A GB1483642 A GB 1483642A GB 33803/74 A GB33803/74 A GB 33803/74A GB 3380374 A GB3380374 A GB 3380374A GB 1483642 A GB1483642 A GB 1483642A
- Authority
- GB
- United Kingdom
- Prior art keywords
- track
- line
- joints
- arrangement
- cab signalling
- 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 abstract 5
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)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
1483642 Track circuits with cab signalling GENERAL SIGNAL CORP 31 July 1974 [7 Sept 1973] 33803/74 Heading B7N In a track circuit and cab signalling arrangement at a cross-over between main lines 15 and 16 the use of A.C. track circuits without insulating joints within the arrangement permits the use of the rails of the main line for cab signalling and traction current return. The arrangement which is within the insulating joints 17, 17<SP>1</SP> and 18, 18<SP>1</SP> online 15 and within joints 19, 19<SP>1</SP> and 20, 20<SP>1</SP> on line 16, includes, associated with line 15, a pair of track circuits having a common bond and receiver 48 responsive to signals at one frequency injected into the first circuit via coil 40 and shorting bar 50 and signals at a second frequency injected into the second circuit via coil 43 and shorting bar 52. These circuits are also provided with cab signalling current using coils 41, 42. A similar arrangement is provided for line 16 and the cross over lines 21, 22 are formed as a single track circuit insulated by joints from the main lines and are provided with track side loops with terminals 1B and 3R for cab signalling purposes. The shorting bars 50-53 are coupled to cross bonds 54-57 to distribute the return traction current evenly between the main line rails.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US395110A US3897921A (en) | 1973-09-07 | 1973-09-07 | Interlocking track circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1483642A true GB1483642A (en) | 1977-08-24 |
Family
ID=23561733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33803/74A Expired GB1483642A (en) | 1973-09-07 | 1974-07-31 | Interlocking track circuits |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3897921A (en) |
| JP (1) | JPS5072309A (en) |
| CA (1) | CA1020263A (en) |
| FR (1) | FR2243101B1 (en) |
| GB (1) | GB1483642A (en) |
| IT (1) | IT1021182B (en) |
| NL (1) | NL7411317A (en) |
| ZA (1) | ZA744946B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4728063A (en) * | 1986-08-07 | 1988-03-01 | General Signal Corp. | Railway signalling system especially for broken rail detection |
| US4878638A (en) * | 1987-01-12 | 1989-11-07 | General Signal Corporation | Combination frequency loop coupling for railway track signalling |
| US9150228B2 (en) * | 2012-07-13 | 2015-10-06 | Grappone Technologies Inc. | Track circuit providing enhanced broken rail detection |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3328581A (en) * | 1966-06-16 | 1967-06-27 | Westinghouse Air Brake Co | Rapid transit speed control system |
| US3450874A (en) * | 1967-03-31 | 1969-06-17 | Gen Electric | Railway track circuit |
| US3526378A (en) * | 1967-08-23 | 1970-09-01 | Westinghouse Electric Corp | Signaling system for determining the presence of a train vehicle |
| US3524054A (en) * | 1968-01-08 | 1970-08-11 | Gen Signal Corp | High frequency track circuits for rail-roads interrelated at switches and crossovers |
| US3666217A (en) * | 1970-05-04 | 1972-05-30 | Gen Signal Corp | Track communication system for continuous rail |
-
1973
- 1973-09-07 US US395110A patent/US3897921A/en not_active Expired - Lifetime
-
1974
- 1974-07-22 CA CA205,334A patent/CA1020263A/en not_active Expired
- 1974-07-31 GB GB33803/74A patent/GB1483642A/en not_active Expired
- 1974-08-02 ZA ZA00744946A patent/ZA744946B/en unknown
- 1974-08-26 NL NL7411317A patent/NL7411317A/en not_active Application Discontinuation
- 1974-09-06 JP JP49102896A patent/JPS5072309A/ja active Pending
- 1974-09-06 FR FR7430364A patent/FR2243101B1/fr not_active Expired
- 1974-09-09 IT IT27063/74A patent/IT1021182B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| US3897921A (en) | 1975-08-05 |
| IT1021182B (en) | 1978-01-30 |
| CA1020263A (en) | 1977-11-01 |
| ZA744946B (en) | 1975-08-27 |
| JPS5072309A (en) | 1975-06-14 |
| FR2243101A1 (en) | 1975-04-04 |
| AU7283674A (en) | 1976-03-04 |
| FR2243101B1 (en) | 1979-01-05 |
| NL7411317A (en) | 1975-03-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |