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Wedglock coupler on a London Underground train. The Wedglock coupler is named for the pneumatic wedges that lock the moving parts of the coupler head in the engaged position. It is the standard automatic coupler used on London Underground trains. The coupler was introduced in 1936 [56] and is manufactured by William Cook Rail [57] and Voith. [58]
Norwegian couplers on 1,067 mm (3 ft 6 in) gauge historic stock of The Dutch East Indies National Railway Company and the majority of the Dutch East Indies Private Railway and Tramway Companies; AAR couplers and Shibata couplers on modern stock; Scharfenberg couplers for the Jakarta - Bandung high speed rail and Soekarno Hatta Airport skytrain.
Buffers and chain couplers (or couplings) – also known as "buffers and screw", "screw", and "screwlink" – are the de facto International Union of Railways (UIC) standard railway coupling used in the EU and UK, and on some railways in other parts of the world, such as in South America and India, on older rolling stock.
The first use of the Scharfenberg coupler was for the Manila MRT Line 3 in 1999. Meanwhile, the first use of the Shibata coupler was for the LRT Line 2. In the future, Shibata couplers are also expected for use on the MRT Line 7, the Metro Manila Subway, and the North–South Commuter Railway (NSCR). The NSCR is so far the only PNR line that ...
The inner section of a wheel that rides between the two rails. The angle between the wheel tread and flange is often specific to the rail to prevent wheel climb and possible derailments. The wheel flange is part of the wheel tire. [citation needed] Wheel flange The projecting edge or rim on the periphery of a car wheel for keeping it on the ...
The frictional force on the rails and the amount of wheel slip drops steadily as the train picks up speed. A driven wheel does not roll freely but turns faster than the corresponding locomotive velocity. The difference between the two is known as the "slip velocity". "Slip" is the "slip velocity" compared to the "vehicle velocity".
The diagram from Beard's 1897 coupler patent [7]. Janney couplers were first patented in 1873 by Eli H. Janney (U.S. patent 138,405). [8] [9] Andrew Jackson Beard was amongst various inventors that made a multitude of improvements to the knuckle coupler; [7] 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 ...
The Scharfenberg coupler [1] (German: Scharfenbergkupplung, abbreviated Schaku) is a commonly used type of fully automatic railway coupling.. Designed in 1903 by Karl Scharfenberg in Königsberg, Germany (today Kaliningrad, Russia), the coupler has gradually spread from transit trains to regular passenger service trains, although outside Europe its use is generally restricted to mass transit ...