GB756499A - Improvements relating to speed control systems for gravity operated railway marshalling yards - Google Patents
Improvements relating to speed control systems for gravity operated railway marshalling yardsInfo
- Publication number
- GB756499A GB756499A GB1297354A GB1297354A GB756499A GB 756499 A GB756499 A GB 756499A GB 1297354 A GB1297354 A GB 1297354A GB 1297354 A GB1297354 A GB 1297354A GB 756499 A GB756499 A GB 756499A
- Authority
- GB
- United Kingdom
- Prior art keywords
- output
- wagon
- speed
- energy level
- railway marshalling
- 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
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K7/00—Railway stops fixed to permanent way; Track brakes or retarding apparatus fixed to permanent way; Sand tracks or the like
- B61K7/02—Track brakes or retarding apparatus
- B61K7/12—Track brakes or retarding apparatus electrically controlled
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
756,499. Railway marshalling yards. METROPOLITAN - VICKERS - GES., Ltd., April 14, 1955 [May 4, 1954], No. 12973/54. Class 103 (1). In a brake control system for a railway marshalling yard a device Q, which continuously responds to the speed of a wagon in passing through a certain distance in a gravity sorting yard, gives a signal which operates a speed indicator S. The speed signal is passed to a converter C the output from which is made to vary with the square of the speed and is therefore a measure of the energy level of the moving wagons. The output from converter C is applied to the followers S1 and S2 which drive sliders S1 and S2 of variably tapped transformers U1 and U2. The connection to the follower F1 includes a back contact R1 operated by a relay coil R energized by closure of a track switch T1 until a normally closed track contact T2 is opened. Thus slider S 1 is adjusted to a position corresponding to the wagon energy level at T1. The position of slider S2 continuously represents the energy level of the wagon throughout the working distance. Thus the output E2 from transformer U2 and output E3 are increased by the amplifier AMP from the output voltage of transformer U1 or modified by a device TD which determines the distance to a wagon already in the siding, are used to energize coils W2 and W3 of an electromagnetic retarder control RC so that the position of an armature A is varied so that one or the other of relays O, L, M or H is energized to bring into action zero, light, medium, or high braking effect on the wagon. In another control circuit described, the output from the indicator S is passed to a rectifier and this is connected via variable resistors to the grids of two thermionic valves, one such connection being subject to closure by a switch moved by a wagon passing a predetermined point in the track. The amplified outputs from the valves are applied to two windings on a magnetic core so as to produce in a third winding a current or voltage representing the difference in the first two windings, and the output from the third winding is used to control relays such as O, L, M or H.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1297354A GB756499A (en) | 1954-05-04 | 1954-05-04 | Improvements relating to speed control systems for gravity operated railway marshalling yards |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1297354A GB756499A (en) | 1954-05-04 | 1954-05-04 | Improvements relating to speed control systems for gravity operated railway marshalling yards |
Publications (1)
Publication Number | Publication Date |
---|---|
GB756499A true GB756499A (en) | 1956-09-05 |
Family
ID=10014494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1297354A Expired GB756499A (en) | 1954-05-04 | 1954-05-04 | Improvements relating to speed control systems for gravity operated railway marshalling yards |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB756499A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3041449A (en) * | 1958-11-17 | 1962-06-26 | Acec | Automatic braking control system |
US3056022A (en) * | 1957-03-29 | 1962-09-25 | Gen Railway Signal Co | Automatic car retarder control system for railroads |
US3089029A (en) * | 1958-04-09 | 1963-05-07 | Westinghouse Air Brake Co | Apparatus for measuring the rolling resistance of a car |
US3182188A (en) * | 1958-02-21 | 1965-05-04 | Westinghouse Air Brake Co | Retarder control system |
US3247372A (en) * | 1957-08-07 | 1966-04-19 | Westinghouse Air Brake Co | Automatic control system for railway classification yards |
US3342989A (en) * | 1960-12-27 | 1967-09-19 | Westinghouse Air Brake Co | Track fullness system |
-
1954
- 1954-05-04 GB GB1297354A patent/GB756499A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3056022A (en) * | 1957-03-29 | 1962-09-25 | Gen Railway Signal Co | Automatic car retarder control system for railroads |
US3247372A (en) * | 1957-08-07 | 1966-04-19 | Westinghouse Air Brake Co | Automatic control system for railway classification yards |
US3182188A (en) * | 1958-02-21 | 1965-05-04 | Westinghouse Air Brake Co | Retarder control system |
US3089029A (en) * | 1958-04-09 | 1963-05-07 | Westinghouse Air Brake Co | Apparatus for measuring the rolling resistance of a car |
US3041449A (en) * | 1958-11-17 | 1962-06-26 | Acec | Automatic braking control system |
US3342989A (en) * | 1960-12-27 | 1967-09-19 | Westinghouse Air Brake Co | Track fullness system |
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