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smoke deflector (plural smoke deflectors)

  1. (rail transport) a device fitted to either side or on top of the smokebox of some steam locomotives, the purpose of which was to lift smoke clear of the locomotive at speed, so it wouldn't obscure the driver's vision.
    • 1959, Steam's Finest Hour, edited by David P. Morgan, Kalmbach Publishing Co.
      Aside from the air-scoop smoke deflector, GTW's six U-4-b streamlined 4-8-4's were counterparts of CNR's U-4-a's.