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Click or hover over numbers to see names. The diagram, which is not to scale, is a composite of various designs in the late steam era. Some components shown are not the same as, or are not present, on some locomotives – for example, on smaller or articulated types. Conversely, some locomotives have components not listed here.
Pages in category "Locomotive parts" ... Steam dome; Steam locomotive components; Steam locomotive exhaust system; Superheater; T. Tender (rail) Thermic siphon ...
Components of a locomotive, e.g. 'cylinder' or 'piston rod', use 'Locomotive parts' Individual locomotive classes use the relevant country, railway company or wheel arrangement category. Generic types of steam locomotive e.g. 'Mallet' or 'Crampton', use 'Steam locomotive types' Locomotive systems or technologies e.g. 'Boiler feedwater' or ...
A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. [1]: 80 It is fuelled by burning combustible material (usually coal, oil or, rarely, wood) to heat water in the locomotive's boiler to the point where it becomes gaseous and its volume increases 1,700 times.
Especially in steam days, wheel arrangement was an important attribute of a locomotive because there were many different types of layout adopted, each wheel being optimised for a different use (often with only some being actually "driven"). Modern diesel and electric locomotives are much more uniform, usually with all axles driven.
The Walschaerts valve gear is a type of valve gear used to regulate the flow of steam to the pistons in steam locomotives, invented by Belgian railway engineer Egide Walschaerts in 1844. [ 1 ] [ 2 ] The gear is sometimes named without the final "s", [ a ] since it was incorrectly patented under that name.
Railway Number and name Type or Class Builder Works Number Built Wheels Location Object Number Image S&D: Locomotion No. 1: R Stephenson: 3 1825 0-4-0
This list of locomotive builders is ordered by country and includes current and defunct builders. Many of the companies changed names over time; this list attempts to give the most recognisable name, generally the one used for the longest time or during the company's best-known period.