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The London and South Western Railway (LSWR) 0298 Class or Beattie Well Tank is a class of British steam locomotive. They are 2-4-0 WT s, originally built between 1863 and 1875 for use on passenger services in the suburbs of London , but later used on rural services in South West England .
The Beattie well tanks were a series of 111 steam locomotives of seven different designs produced for the London and South Western Railway (LSWR) between 1852 and 1875. All carried the water supply in well tanks , set low down between the frames.
Eight 4-2-4 well- and back-tank locomotives which entered service on the Bristol and Exeter Railway in 1853 appear to have been the first with this wheel arrangement. The engine was designed by James Pearson , the railway company's engineer, and featured single large flangeless driving wheels between two supporting four-wheeled bogies .
The LSWR 415 class combined side tanks and a well tank. Large side tank engines might also have an additional rear tank (under the coal bunker), or a well tank (between the frames). [21] This may have been to increase the water capacity, to equalise the weight distribution, or else improve the stability by lowering the centre of gravity. [22]
This type was only used for tank locomotives. In the UK 0-4-4 tanks were mainly used for suburban or rural passenger duties. In America, the wheel arrangement became known as the Forney, after a specific design of 0-4-4s, the Forney locomotive, became heavily used on the narrow curves of elevated railways and other rapid transit lines.
Haydock Foundry produced six 0-6-0 well tank steam locomotives, designed by Josiah Evans, for the collieries. They had outside Gooch valve gear and piston valves , a very early use of piston valves.