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Walkway around the locomotive, from the cab front, to facilitate inspection and maintenance. [5] [6]: 437 [3]: 67 Frame The strong, rigid structure that carries the boiler, cab and engine unit; supported on driving wheels (43) and leading and trailing trucks (14, 46). [3]: 36 The axles run in slots in the frames.
A locomotive's direction of travel and cut-off are set from the cab by using a reversing lever or screw reverser actuating a rod reaching to the valve gear proper. Some larger steam engines employ a power reverse, which is a servo mechanism, usually powered by steam. This makes control of the reversing gear easier for the driver.
Joy valve gear - a design used extensively on the L&YR and LNWR in England, and elsewhere. A preserved example is LNWR G2a Class number 49395.; Marshall valve gear - a modified Hackworth gear, patented in 1879 by Marshall, Sons & Co.
The earliest locomotives, such as Stephenson's Rocket, had no cab; the locomotive controls and a footplate for the crew were simply left open to the elements. However, to protect locomotive crews against adverse weather conditions, locomotives gradually came to be equipped with a roof and protective walls, and the expression "cab" refers to the cabin created by such an arrangement.
Marshal, model GM6 (1961–66) – 6x2 or 6x4 medium-duty cabover (Mk.V cab) Marshal, model TGM6 (1965–77) – 6x2 or 6x4 medium-duty cabover (Ergomatic tilting cab). Variant with larger (but downrated) engine was known as Marshal Major, model 2TGM6; Marshal 8, model TGM8 (1967–68) 8x4 medium duty cabover (Ergomatic tilting cab) Matador
President-elect Donald Trump will Meet the Press in an exclusive sit-down interview with NBC’s Kristen Welker this weekend, the network announced Wednesday. The conversation, Trump’s first ...
Cab units were not generally used in Great Britain. The traditional makers continued to use heavyweight frames and cowl units instead. The LMS twins 10000 and 10001 used the design and later locomotive types such as the British Rail Class 37, and British Rail Class 40 utilised cab units but the term "cab unit" is not used in Britain. The Class ...
James Thompson Marshall (1854, Glanford Brigg, Lincolnshire [1] - 1931, Knaresborough, Yorkshire [2]) was an English railway and mechanical engineer known for inventing the 'Marshall valve gear' for steam locomotive use. James Marshall began his engineering career at the Leeds-based Steam Plough Company, and later moved to the city's Boyne ...