The Tasmanian Government Railways J class was a one locomotive class of

steam locomotive A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. It is fuelled by burning combustible material (usually coal, oil or, rarely, wood) to heat water in the locomot ...

s operated by the

Tasmanian Government Railways 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 Na ...

. It was known as ''Hagan's Patent''.

History

To operate trains on the

North East Dundas Tramway The North East Dundas Tramway was a Narrow-gauge railway, narrow gauge tramway (industrial), tramway, that ran between Zeehan and Deep Lead (now Williamsford, Tasmania, Williamsford) on the West Coast, Tasmania, West Coast of Tasmania. Opening ...

, the

purchased a locomotive from

Maschinenfabrik Christian Hagans Maschinenfabrik Christian Hagans (Christian Hagans Engineering Works) was a German locomotive manufacturer founded on 1 July 1857 in Erfurt, Germany, by Christian Hagans. By the mid-1860s, the company had started building locomotive boilers and o ...

Erfurt Erfurt () is the capital and largest city in the Central German state of Thuringia. It is located in the wide valley of the Gera river (progression: ), in the southern part of the Thuringian Basin, north of the Thuringian Forest. It sits i ...

in 1901. The locomotive had an articulated wheel arrangement. Its weight played havoc with the light rails it ran over and in 1910 it was replaced by the K class."Steam Locomotives of the Tasmanian Government Railways and its Constituents" ''

Australian Railway History ''Australian Railway History'' is a monthly magazine covering railway history in Australia, published by the New South Wales Division of the Australian Railway Historical Society on behalf of its state and territory Divisions.Railway locomotives introduced in 1901 Steam locomotives of Tasmania 2 ft gauge locomotives