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FS Class 480
The Ferrovie dello Stato Italiane (FS; Italian State Railways) Class 480 (Italian: ''Gruppo 480'') is a 2-10-0 steam locomotive.
==Design and construction==
The Class 480 was expressely designed for the Brenner Railway, after the First World War had resulted in Italy and the FS taking possession of it up to its summit at the Brenner Pass. Previously the Austrian company Südbahn had worked the line with its powerful 2-10-0 SB 580 locomotives, ten of which had remained south of the new border and had been taken over by the FS as Class 482; these were however insufficient, and the Italian Class 470 locomotive, while powerful, did not have enough steaming to adequately last for the section from Bolzano to the summit. Therefore, it was decided to design a new locomotive based on the Class 482.〔Cornolò, p. 209〕〔Kalla-Bishop, p. 37〕
The Class 480 was fitted with an Italian bogie, the central driving wheels had their flanges reduced, and the last driving axle was given some lateral play to allow the locomotive to deal with sharp curves; because of the need of a boiler with good steaming capacity, a huge firebox (, considered the maximum compatible with manual loading) was fitted. Coherent with the standard FS practices, the locomotives were superheated and had two simple-expansion cylinders. A standard FS bogie tender was fitted, and also had left-hand drive and multiple Del Papa valves.〔Cornolò, p. 210〕〔Kalla-Bishop, p. 38〕
Given the needs of the Brenner line, only 18 locomotives were ordered, all to the Officine Meccaniche, which delivered them in 1923.〔Cornolò, ibidem〕〔Kalla-Bishop, p. 37〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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