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electric traction elevator

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  • Elevator — For other uses, see Elevator (disambiguation). A set of lifts in the lower level of a London Underground station. The arrows indicate each elevator s position and direction of travel …   Wikipedia

  • elevator — /el euh vay teuhr/, n. 1. a person or thing that elevates or raises. 2. a moving platform or cage for carrying passengers or freight from one level to another, as in a building. 3. any of various mechanical devices for raising objects or… …   Universalium

  • Electric motor — For other kinds of motors, see motor (disambiguation). For a railroad electric engine, see electric locomotive. Various electric motors. A 9 volt PP3 transistor battery is in the center foreground for size comparison. An electric motor converts… …   Wikipedia

  • Underground Electric Railways Company — The Underground Electric Railways Company of London Limited (UERL) was the holding company for three of the new deep level tube underground railway lines constructed in London in the first decade of the 20th century. It was established in 1902 by …   Wikipedia

  • gearless traction — noun : traction without reduction gears (as in a high speed electric elevator drive in which the driving sheave is mounted directly on the armature shaft) …   Useful english dictionary

  • Frank J. Sprague — Infobox Scientist name = Frank J. Sprague caption = Frank Julian Sprague (1857 1934) American inventor, Father of Electric Traction birth date = birth date|1857|7|25 birth place = death date = death date and age|1934|10|25|1857|7|25 death place …   Wikipedia

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  • technology, history of — Introduction       the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …   Universalium

  • Multiple-unit train control — Multiple unit train control, sometimes abbreviated to multiple unit or MU, is a method of simultaneously controlling all the traction equipment in a train from a single location, whether it is a Multiple unit comprising a number of self powered… …   Wikipedia

  • Escalator — For the album by Sam Gopal, see Escalator (album). Escalators in a Copenhagen Metro station, Denmark, 2007 Escalator in action, 2011 An e …   Wikipedia

  • Cable car (railway) — A cable car or cable railway is a mass transit system using rail cars that are propelled by a continuously moving cable running at a constant speed. Individual cars stop and start by releasing and gripping this cable as required. Cable cars are… …   Wikipedia

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