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A Garratt locomotive is a type of articulated steam locomotive invented by British engineer Herbert William Garratt that is articulated into three parts. Its boiler, firebox, and cab are mounted on a centre frame or "bridge". The two other parts, one at each end, have a pivot to support the central frame; they consist of a steam engine unit – with driving wheels, trailing wheels, valve gear, and cylinders, and above it, fuel and/or water storage.
The North East Dundas Tramway was a 2 ft narrow gauge tramway, that ran between Zeehan and Deep Lead on the West Coast of Tasmania. Opening in 1896 and closing in 1932, it was part of the Tasmanian Government Railways network. The world's first Garratt locomotives, the K class, were used on the line.
The Tasmanian Government Railways K class was a class of 0-4-0+0-4-0 Garratt locomotives operated by the Tasmanian Government Railways from 1909. They were the first Garratt locomotives built.
The Australian Standard Garratt (ASG) was a Garratt articulated steam locomotive designed and built in Australia during World War II for use on the 1067 mm narrow-gauge railway systems owned by the Australian states of Queensland, South Australia, Tasmania and Western Australia. After the war, ASGs operated in South Australia and at the Fyansford Cement Works railway in Victoria.
The Tasmanian Government Railways (TGR) was the former operator of the mainline railways in Tasmania, Australia. Formed in 1872, the railway company was managed by the Government of Tasmania, and existed until absorption into the Australian National Railways Commission in 1978.
Under the Whyte notation for the classification of steam locomotives by wheel arrangement, the 0-4-0+0-4-0 is an articulated locomotive of the Garratt type. The wheel arrangement is effectively two 0-4-0 locomotives operating back-to-back or face-to-face, with the boiler and cab suspended between the two power units. Each power unit has no leading wheels, four powered and coupled driving wheels on two axles and no trailing wheels. A similar arrangement exists for Mallet, Meyer and Fairlie locomotives, but is referred to as 0-4-4-0.
The South African Railways Class NG G13 2-6-2+2-6-2 of 1927 are a class of narrow gauge articulated steam locomotives.
The Victorian Railways G class is a class of steam locomotives built for the Victorian Railways 2 ft 6 in gauge branch lines by Beyer, Peacock & Company. They were introduced in 1926 to increase train sizes, eliminate the practice of double heading NA locomotives and reduce losses on these lines. Their tractive effort was comparable to the most powerful branch line locomotives on the Victorian Railways 5 ft 3 in, the K class.
Under the Whyte notation for the classification of steam locomotives by wheel arrangement, a 4-4-2+2-4-4 is a Garratt articulated locomotive. The wheel arrangement is effectively two 4-4-2 locomotives operating back to back, with each power unit having four leading wheels on two axles in a leading bogie, four powered and coupled driving wheels on two axles, and two trailing wheels on one axle in a trailing truck. Since the 4-4-2 type is usually known as an Atlantic, the corresponding Garratt type is often referred to as a Double Atlantic.
The New South Wales AD60 class were Beyer-Garratt patent articulated four-cylinder, simple, non-condensing, coal-fired superheated, 4-8-4+4-8-4 heavy goods steam locomotives built by Beyer, Peacock & Company for the New South Wales Government Railways in Australia.
The Tasmanian Government Railways G class was a class of 0-4-2T steam locomotives operated by the Tasmanian Government Railways.
The Tasmanian Government Railways M class is a class of 4-6-2 steam locomotives operated by the Tasmanian Government Railways.
The Emu Bay Railway was a Tasmania, Australian railway company. The railway was significant during full operation, in that it linked the Tasmanian Government Railways system at Burnie with that at Zeehan that further linked to the Mount Lyell railway allowing connection through to Queenstown.
The South Australian Railways T class was a class of seventy-eight 1067 mm narrow-gauge 4-8-0 steam locomotives operated by the South Australian Railways. Several were sold to the Tasmanian Government Railways; some others operated on the Commonwealth Railways. Four were converted to operate on 1600 mm broad-gauge lines.
The Queensland Railways Beyer-Garratt class locomotive was a class of 4-8-2+2-8-4 steam locomotives operated by the Queensland Railways.
The WAGR M class was a class of 2-6-0+0-6-2 Garratt-type articulated steam locomotives operated by the Western Australian Government Railways (WAGR) between 1912 and 1955. A total of 13 were built by Beyer, Peacock & Co, Manchester in two batches.
The Tasmanian Government Railways A class was a class of 4-4-0 steam locomotives operated by the Tasmanian Government Railways.
The Tasmanian Government Railways B class was a class of 4-4-0 steam locomotives operated by the Tasmanian Government Railways.
The Tasmanian Government Railways C class was a class of 2-6-0 steam locomotives operated by the Tasmanian Government Railways.
The Tasmanian Government Railways M class was a class of 4-4-2+2-4-4 Garratt locomotives operated by the Tasmanian Government Railways.
References
- ↑ The Railways of Tasmania Locomotive, Railway Carriage & Wagon Review issue 363 November 1922 page 363
- ↑ A Brief History of the Garratt Locomotive in Australia Australian Railway Historical Society Bulletin issue 185 March 1953 pages 25-29
- ↑ Australian Garratts The Railway Magazine issue 894 October 1975 page 489
- ↑ Turner, Jim (1997). Australian Steam Locomotives 1896-1958. Kenthurst: Kangaroo Press. p. 59. ISBN 086417778X.
- ↑ Oberg, Leon (2010). Locomotives of Australia 1850s-2010. Dural: Rosenberg Publishing. pp. 152/153. ISBN 9781921719011.
- ↑ Steam Locomotives of the Tasmanian Government Railways and its Constituents Australian Railway History issue 917 March 2014 page 9