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  2. Buffers and chain coupler - Wikipedia

    en.wikipedia.org/wiki/Buffers_and_chain_coupler

    Narrow gauge flat wagons, 750 mm (2 ft 5 + 1 ⁄ 2 in).Note the single buffer with a hook on the right side and a chain on the other. On some narrow-gauge lines in Europe, and on the Paris Metro, a simplified version of the loose-coupler is used, consisting of a single central buffer with a chain underneath.

  3. Railway coupling - Wikipedia

    en.wikipedia.org/wiki/Railway_coupling

    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]

  4. Janney coupler - Wikipedia

    en.wikipedia.org/wiki/Janney_coupler

    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 ...

  5. Tightlock coupling - Wikipedia

    en.wikipedia.org/wiki/Tightlock_coupling

    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 keeps the coupler closed.

  6. Grease fitting - Wikipedia

    en.wikipedia.org/wiki/Grease_fitting

    Grease fitting on a bearing A grease nipple on the driver's door of a 1956 VW Beetle. A grease fitting, grease nipple, Zerk fitting, grease zerk, Alemite fitting, or divit is a metal fitting used in mechanical systems to feed lubricants, usually lubricating grease, into a bearing under moderate to high pressure using a grease gun.

  7. Railway coupling conversion - Wikipedia

    en.wikipedia.org/wiki/Railway_coupling_conversion

    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 ...

  8. Digital automatic coupling - Wikipedia

    en.wikipedia.org/wiki/Digital_automatic_coupling

    The function level DAK-4 must connect the e-coupler including electric supply (400V) and digitial sockets. The function level DAK-5 must allow for remote uncoupling using an electric motor (the DAK does not use uncoupling air pipes as defined in EN 16019 for high speed trains). Rollout plans may use function level DAK-4 when prepared for an ...

  9. Dellner - Wikipedia

    en.wikipedia.org/wiki/Dellner

    In the following years, the company expanded into automatic couplers under the name AB Dellner Malmco in Scandinavia. At the same time, a subsidiary was established in North America. At the beginning of the 1980s, the company had around 90 employees working at its Swedish headquarters in Vika and in subsidiaries in the USA and Canada.