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The Tomlinson coupler is the most widely used fully automatic heavy rail coupling in North America having been adopted by the Washington Metro, Massachusetts Bay Transportation Authority, PATCO Speedline, SEPTA Broad Street Subway, Los Angeles Metro Rail, Baltimore Metro, Miami Metro, MARTA Rail and the New York City Subway for its R44/R46 ...
Double junction, or level junction (left hand running). A double junction is a railway junction where a double-track railway splits into two double track lines. Usually, one line is the main line and carries traffic through the junction at normal speed, while the other track is a branch line that carries traffic through the junction at reduced speed.
The diagram from Beard's 1897 coupler patent [1]. Janney couplers were first patented in 1873 by Eli H. Janney (U.S. patent 138,405). [2] [3] Andrew Jackson Beard was amongst various inventors that made a multitude of improvements to the knuckle coupler; [1] Beard's patents were U.S. patent 594,059 granted 23 November 1897, which then sold for approximately $50,000, and U.S. patent 624,901 ...
Like all Janney couplers, the Tightlock is "semi-automatic". The couplers automatically lock when cars are pushed together, but workers must go between cars to hook up the air lines for the pneumatic brakes and connect cables for head-end power and other communications. To separate cars, a worker must use a lever to move the locking pin that ...
An improvement over fishplate rail connectors is directly bonding rails together using thermite or flash butt welding. In 1967, the Hither Green rail crash occurred on the Southern Region of British Railways when a rail fractured at its fishplate joint. The crash accelerated welded rail connections, with strict procedures on concrete and wooden ...
The rail spike has entered American popular consciousness in this manner; the driving of the Golden Spike was a key point in the development of the western seaboard in North America and was recognized as a national achievement and demonstration of progress. Since, railroad workers have been celebrated in popular culture, including in song and ...
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A stretch of rail that branches off the main line, often to an industry that is serviced by freight trains [225] Stacks A nickname for double-stacked cars or trains [225] Steeplecab (US) An electric locomotive with a central cab and sloping "noses" on each end Subway (US) A railroad that runs underground, generally in a large city Susie-Q (US)
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