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Queensland BB18¼ class locomotive : ウィキペディア英語版 | Queensland BB18¼ class locomotive
The BB18¼ class locomotive was a type of 4-6-2 steam locomotive operated by the Queensland Railways. The locomotives operated on gauge. The “B”, is used to identify the number of coupled wheels, being six coupled wheels for the BB18¼ class, followed by numerals indicating the cylinder diameter of 18¼ inches. These new locomotives were classed BB18¼, to distinguish them from their predecessor the B18¼ class. The BB18¼ design was an improvement on earlier successful B18¼ incorporating modern appliances. Some modifications to the original design were suggested by Vulcan Foundry and subsequently adopted. A number of features, including the mounting of Westinghouse pump on fireman’s side, stainless steel rather than brass boiler bands, SCOA-P coupled wheels (rather than having traditional solid spokes the SCOA-P spoke is hollow, with a 'U' shaped cross section and are considerably lighter than a conventional spoked wheel) pressed steel sand box and a larger tender giving an increased coal and water capacity. Engines constructed by Walkers Limited used electricity for the light on the rear of the tender, for side lamps and to illuminate the motion. All were fitted with Roller Bearings and chime whistles. The engines were painted green when introduced. ==History== Fifty-five BB18¼ class locomotives were built. The first batch of 35, numbered from 1011 to 1045, were built in 1950 by the Vulcan Foundry in Newton-le-Willows, Lancashire. The final batch of 20, numbered from 1070 to 1089, were built locally by Walkers Ltd. in the Queensland town of Maryborough between 1955 and 1958. No. 1089 was the last steam engine placed into service on a mainline Australian railway. Throughout their careers, the BB18¼ class engines were used on a variety of trains, including long-distance passenger, mail and goods trains as well as suburban passenger services in the Brisbane metropolitan area. The class was withdrawn from service after 1967, with the last example removed upon the completion of dieselisation in 1970.〔
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「Queensland BB18¼ class locomotive」の詳細全文を読む
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