GB1171991A - Highway Crossing Signal Control System - Google Patents
Highway Crossing Signal Control SystemInfo
- Publication number
- GB1171991A GB1171991A GB3675/67A GB367567A GB1171991A GB 1171991 A GB1171991 A GB 1171991A GB 3675/67 A GB3675/67 A GB 3675/67A GB 367567 A GB367567 A GB 367567A GB 1171991 A GB1171991 A GB 1171991A
- Authority
- GB
- United Kingdom
- Prior art keywords
- crossing
- track
- signals
- receivers
- modulated
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L29/00—Safety means for rail/road crossing traffic
- B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
Abstract
1,171,991. Level crossing control. GENERAL SIGNAL CORP. 25 Jan., 1967 [1 Feb., 1966], No. 3675/67. Heading B7N. In a level crossing control arrangement, each crossing e.g. A is provided with a transmitter 10 which supplies a modulated A.C. current of a predetermined frequency F1 to the electrically continuous track rails 2, a pair of selective track receivers 11, 13 at the outer ends of the approach track sections for the crossing and a pair of line receivers 12, 14 which receive the modulated A.C. signals from the track receivers 11, 13 via line wires 4, 6 and control the road crossing signals SA via interlocking equipment 15. Where a second crossing B is relatively close to the crossing A, the apparatus for B operates at a different frequency F2 but shares the line wires 4, 6. Island apparatus i.e. short track circuits operating at high frequency are used at the crossings to terminate the road signals after passage of a train.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US52429766A | 1966-02-01 | 1966-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1171991A true GB1171991A (en) | 1969-11-26 |
Family
ID=24088610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3675/67A Expired GB1171991A (en) | 1966-02-01 | 1967-01-25 | Highway Crossing Signal Control System |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3422262A (en) |
| DE (1) | DE1605395A1 (en) |
| ES (1) | ES336238A1 (en) |
| GB (1) | GB1171991A (en) |
| NL (1) | NL6701574A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3501629A (en) * | 1968-12-30 | 1970-03-17 | Westinghouse Air Brake Co | Speed control system for railroad trains |
| US3734434A (en) * | 1971-06-14 | 1973-05-22 | Gen Signal Corp | Control of multiple highway crossings |
| US3974991A (en) * | 1975-08-27 | 1976-08-17 | Erico Rail Products Company | Railroad motion detecting and signalling system with repeater receiver |
| US4251041A (en) * | 1978-07-12 | 1981-02-17 | General Signal Corporation | Multiplexing means for motion detectors at grade crossings |
| EP1489717A1 (en) * | 2003-06-17 | 2004-12-22 | Siemens Schweiz AG | Method for electrical power supply of track devices |
| US8500071B2 (en) * | 2009-10-27 | 2013-08-06 | Invensys Rail Corporation | Method and apparatus for bi-directional downstream adjacent crossing signaling |
| AU2015203296B2 (en) * | 2009-10-27 | 2018-02-08 | Siemens Industry, Inc. | Method and apparatus for bi-directional downstream adjacent crossing signaling |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3046392A (en) * | 1958-03-03 | 1962-07-24 | Westinghouse Air Brake Co | Control circuits |
| US3035167A (en) * | 1958-12-03 | 1962-05-15 | Westinghouse Air Brake Co | Railway track circuit |
| US2993116A (en) * | 1958-12-03 | 1961-07-18 | Westinghouse Air Brake Co | Electronic track circuit |
| US3069542A (en) * | 1960-06-07 | 1962-12-18 | Westinghouse Air Brake Co | Railway track circuits |
| US3267281A (en) * | 1962-09-10 | 1966-08-16 | Gen Signal Corp | Highway crossing system |
| US3333096A (en) * | 1964-04-03 | 1967-07-25 | Marquardt Corp | Railway track circuit apparatus |
-
1966
- 1966-02-01 US US524297A patent/US3422262A/en not_active Expired - Lifetime
-
1967
- 1967-01-25 GB GB3675/67A patent/GB1171991A/en not_active Expired
- 1967-01-30 ES ES0336238A patent/ES336238A1/en not_active Expired
- 1967-01-31 DE DE19671605395 patent/DE1605395A1/en active Pending
- 1967-02-01 NL NL6701574A patent/NL6701574A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES336238A1 (en) | 1967-12-16 |
| US3422262A (en) | 1969-01-14 |
| DE1605395A1 (en) | 1971-03-25 |
| NL6701574A (en) | 1967-08-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |