An articulated locomotive is a Great Western Railway No. 6833 Calcot Grange, a 4-6-0 Grange class steam locomotive, at Bristol Temple Meads station, Bristol, England A locomotive is a railway vehicle that provides the motive power for a train, and has no payload capacity of its own; its sole purpose is to provide... steam locomotive with one or more engine units which can move relative to the main frame. This is done to allow a longer locomotive to negotiate tighter curves. Articulated locomotives are generally used either on lines with extreme curvature—logging, industrial, or mountainous railways, for example—or for very large locomotives to run on railways with more standard track curvature.

The largest steam locomotives ever built, such as the Big Boy #4012 at work on a cold November 29, 1941. Big Boy was the nickname universally applied to the Union Pacific Railroads twenty-five 4000 class 4-8-8-4 steam locomotives built between 1941 and 1944 by Alco. They are often proclaimed as the largest steam locomotives... Union Pacific Big Boy Big Boy #4012 at work on a cold November 29, 1941. Big Boy was the nickname universally applied to the Union Pacific Railroads twenty_five 4000 class 4_8_8_4 steam locomotives built between 1941 and 1944 by Alco. They are often proclaimed as the largest steam locomotives ever built, but that... 4-8-8-4s, were articulated locomotives. They saw service in most nations, but were very popular on the Narrow-gauge railways are railroads (railways) with track spaced at less than the standard gauge of 4 ft 8 in (1.435 m). In practice, all narrow gauge railroads in existence have gauges of 3 ft 6 in (1.067 m) or less. The rationale for the use of a... narrow gauge railways of Europe and saw their greatest size developed in the United States.

Many different schemes for articulation were developed over the years. Of these, the A typical European Mallet type, a narrow gauge 0-4-4-2 tank locomotive for a mountain railway (in this case, the RhB in Switzerland). A preserved 2-6-6-2T Mallet The Mallet Locomotive is a type of articulated locomotive, invented by a Frenchman named Anatole Mallet (and thus... Mallet locomotive and its simple-expansion derivative was the most popular, followed by the A Garratt is a type of steam locomotive that is articulated, normally in three parts. Its boiler is mounted on the center frame, and two steam engines are mounted on separate frames, one on each end of the boiler. The concept for this type of locomotive was developed by Australian... Garratt type (mostly built in the The United Kingdom of Great Britain and Northern Ireland is a country in western Europe, and a member of the British Commonwealth and European Union. Usually known simply as the United Kingdom, UK or, inaccurately, as Great Britain or Britain, the UK has four constituent parts. Three of these parts... United Kingdom and the various A geared steam locomotive is a type of steam locomotive which uses reduction gearing in the drivetrain, as opposed to the common directly-driven design. Explanation and rationale The steam locomotive, as commonly employed, has its pistons directly attached to cranks on the driving wheels; thus, there is no gearing... geared steam locomotive types, the latter largely used in logging, mining and industrial uses. Most other types saw only limited success.

Types of articulated locomotive

These are the major types of articulated locomotive; there were large numbers of other designs.

• The Alternate meanings: See Fairlie (disambiguation) Fairlie Type locomotive built for the Burma Railways by the Vulcan Foundry Co. A Fairlie is a type of articlated steam locomotive which has the driving wheels on bogies. The locomotive may be double-ended (a double Fairlie) or single ended (a single Fairlie). Fairlies... Fairlie, with two powered trucks under a double boiler, or its Single Fairlie single-boiler derivative with one powered and one unpowered truck (known as a The Wm. Mason, an 1874 0-6-6 Mason Bogie and the first locomotive with Walschearts valve gear built in the United States. Note the intricate decorative work. Boston, Revere Beach & Lynn #6, a 1886 product of Mason Machine Works. This is a 2-4-4 Mason Bogie. Note... Mason Bogie in the The United States of America — also referred to as the United States, the U.S.A., the U.S., America¹, the States, or (archaically) Columbia — is a federal republic of 50 states located primarily in central North America (with the exception of two states: Alaska and Hawaii... United States).
• The A Garratt is a type of steam locomotive that is articulated, normally in three parts. Its boiler is mounted on the center frame, and two steam engines are mounted on separate frames, one on each end of the boiler. The concept for this type of locomotive was developed by Australian... Garratt, with an engine unit at each end carrying coal and water supplies, and a boiler unit articulated between them.
• The A typical European Mallet type, a narrow gauge 0-4-4-2 tank locomotive for a mountain railway (in this case, the RhB in Switzerland). A preserved 2-6-6-2T Mallet The Mallet Locomotive is a type of articulated locomotive, invented by a Frenchman named Anatole Mallet (and thus... Mallet locomotive, with one fixed engine under the rear of the locomotive and a radially swinging engine unit in front.
• The Meyer locomotive, with two powered engine trucks under the locomotive (generally with the cylinders inward). Also, the Kitson-Meyer variant with the trucks spread apart to allow a deeper Wikipedia does not yet have an article with this exact name. Start the FireBox article If you have created this page in the past few minutes and it has not yet appeared, it may not be visible due to a delay in updating the database. Please wait and check again... firebox between them.
• Multiple A geared steam locomotive is a type of steam locomotive which uses reduction gearing in the drivetrain, as opposed to the common directly-driven design. Explanation and rationale The steam locomotive, as commonly employed, has its pistons directly attached to cranks on the driving wheels; thus, there is no gearing... geared steam locomotive types.