![]() ![]() ![]() ![]() ![]() This is sometimes called a Westinghouse pump or Knorr pump after George Westinghouse and Georg Knorr. 9 Steam dome - Collects the steam at the top of the boiler so that it can be fed to the engine via the regulator/throttle valve 10 Air pump - Provides air pressure for operating the brakes (train air brake system). 8 Throttle Lever/Regulator - Controls the opening of the regulator/throttle valve (#.31) thereby controlling the supply of steam to the cylinders. 7 Sand dome - Holds sand that can be deposited on the rails to improve traction, especially in wet or icy conditions. 6 Generator - small steam turbine directly coupled with electrical generator to headlights etc. 5 Safety valve - Pressure relief valve to stop the boiler exceeding the operating limit. 4 Reach rod - Rod linking the reversing actuator in the cab (often a johnson bar)) to the valve gear. 3 Whistle - Steam powered whistle, located on top of the boiler and used as a signalling and warning device. 2 Cab - Compartment from which the engineer and fireman can control the engine and tend the firebox. Guide to steam locomotive components (The image is of a composite imaginary locomotive, not all components are present on all locomotives and not all possible components are present and/or labelled in the illustration above).ฤก Tender - Container holding both water for the boiler and combustible fuel such as wood, coal or oil for the fire box. This is a glossary of the components found on typical steam locomotives. ![]()
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