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Walter Chalmers was a Scottish engineer. He followed his father into the North British Railway, starting as an apprentice at Cowlairs railway works. In 1904 he became Chief Draughtsman and, from 1920–1922, he was Chief Mechanical Engineer.〔(Walter Chalmers )〕 ==Locomotives== Because Grouping was imminent, Chalmers had little opportunity to develop new steam locomotive types but he did supervise the rebuilding of the last eighteen locomotives of NBR Class M 4-4-0 (later LNER Class D31).〔(The Holmes D31 (NBR Class M) 4-4-0 Locomotives )〕 He also designed a three-cylinder 2-8-0 mineral engine but this never got beyond the drawing board. Dimensions of LNER Class D31 (as rebuilt) 〔Ian Allan ABC of British Railways Locomotives, 1948 edition, part 4, page 18〕 * Weights: * * Locomotive, 46 tons 8 cwt * * Tender, 33 tons 9 cwt * Boiler pressure, 175 psi * Superheater, no * Cylinders, 18¼" x 26" * Driving wheel diameter, 6' 6" * Tractive effort, 16,515 lbf Seven D31s passed into British Railways ownership in 1948 but three of these were quickly withdrawn leaving BR numbers 62059, 62060, 62065 and 62072. The last D31 was withdrawn in 1952 and none was preserved. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Walter Chalmers」の詳細全文を読む スポンサード リンク
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