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| factorofadhesion = | trainheating = | locobrakes = | locobrakeforce = | trainbrakes = | safety = | operator = Natal Government Railways South African Railways | operatorclass = NGR Altered Class B SAR Class 1B, SAR Class 1 | powerclass = | numinclass = 6 | fleetnumbers = NGR 319-324 SAR 1440-1445 | officialname = | nicknames = | axleloadclass = | locale = | deliverydate = 1904 | firstrundate = 1904 | lastrundate = | retiredate = | withdrawndate = 1935-1975 | preservedunits = | restoredate = | scrapdate = | currentowner = | disposition = | notes = }} The South African Railways Class 1B 4-8-2 of 1904 is a steam locomotive from the pre-Union era in the Natal Colony. In 1904 the Natal Government Railways placed fifty Class B locomotives with a Mastodon wheel arrangement in service. Of these, six were modified in 1906 to Altered Class B locomotives, the first in the world with a Mountain wheel arrangement. In 1912, when those six were assimilated into the South African Railways, they were renumbered and classified as Class 1B.〔Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer’s Office, Pretoria, January 1912, pp. 7, 12, 15, 45 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000)〕 ==Manufacturer== At the time that D.A. Hendrie was appointed as the Locomotive Superintendent of the Natal Government Railways (NGR), it had a large fleet of tank locomotives, but all with a limited coal and water range. It was also often necessary to double and even triple head them over the worst sections of the mainline with its steep 1 in 30 gradients. Hendrie was therefore tasked to produce a locomotive of greater power and capable of longer distances without refuelling or rewatering. His resulting Hendrie B achieved this and fifty such locomotives that the NGR ordered from the North British Locomotive Company (NBL) were delivered in 1904.〔〔〔 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 1B 4-8-2」の詳細全文を読む スポンサード リンク
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