The North Eastern Railway (NER) 1001 Class was a class of long-boiler

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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 loco ...

William Bouch William Bouch (; 1813–1876) was an English railway engineer, who is famous for the steam locomotives he designed for the Stockton and Darlington Railway. In 1860, Bouch designed the first British standard gauge locomotives to use a 4-4-0 wheel ...

Technical data

A NER 1001 class locomotive weighed about , with a wheelbase of and diameter driven wheels. Its diameter boiler produced over of tractive effort at .

History

The "long boiler" design dated back to a

Stephenson Stephenson is a medieval patronymic surname meaning "son of Stephen". The earliest public record is found in the county of Huntingdonshire in 1279. There are variant spellings including Stevenson. People with the surname include: *Ashley Stephen ...

design of 1842. At that time there was a controversy about keeping the centre of gravity low. Another point of view was espoused by John Gray who set out to improve efficiency and increase the pressure in shorter boilers using single drivers instead of coupled wheels. His ideas led to the design of the highly successful

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. The long boiler design with coupled wheels continued for slower heavier work. A total of 192 NER 1001 class locomotives were built from 1852 by a number of private manufacturers, as well as the NER's own works at

Darlington Darlington is a market town in the Borough of Darlington, County Durham, England. The River Skerne flows through the town; it is a tributary of the River Tees. The Tees itself flows south of the town. In the 19th cen