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The South African Railways Class H 4-10-2T of 1899 is a steam locomotive from the pre-Union era in the Natal Colony. Between 1899 and 1903 the Natal Government Railways placed one hundred and one tank steam locomotives with a wheel arrangement in service. In 1912, with the establishment of the South African Railways, the ninety-three Class C Reid Tenwheelers that survived unmodified were designated .〔Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer’s Office, Pretoria, January 1912, pp. 7, 11, 13, 23-25 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000)〕 ==Manufacturers== Increasing traffic on the new Natal Government Railways (NGR) mainline into the interior, with its sharp curves and severe 1 in 30 gradients, led to the requirement for a tank locomotive that could haul at least one and a half times as much as a Dübs A 4-8-2T locomotive. This resulted in the design of a tank locomotive by G.W. Reid, Locomotive Superintendent of the NGR at the end of the nineteenth century.〔 Since there was no precedent for such an enormous Cape gauge tank locomotive, the design was the subject of some severe criticism and various objections were put forward against its introduction. It was therefore decided to order only one experimental locomotive from Dübs and Company. It was delivered in 1899 and numbered 149.〔 In 1900 the General Manager of the NGR reported that the trials of the 4-10-2 locomotive had proven successful beyond anticipation. As a result, orders were placed for another one hundred locomotives between 1901 and 1903. The first ninety-five of these locomotives were built in four batches by Dübs and were numbered in the range from 150 to 244.〔 Since Dübs and a number of other Scottish locomotive builders were merged to form the North British Locomotive Company (NBL) while the locomotives were being built, the last five were delivered as having been built by the newly established NBL, numbered in the range from 245 to 249. On the NGR the locomotive type became known as the Reid Tenwheeler and when a locomotive classification system was introduced, they were designated Class C.〔〔''The Railway Report for year ending 31 Dec. 1908'', Natal Government Railways, p. 39, par 14.〕〔North British Locomotive Company works list, compiled by Austrian locomotive historian Bernhard Schmeiser〕 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「South African Class H 4-10-2T」の詳細全文を読む スポンサード リンク
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