The NER Class W1 was a 4-6-2T

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, Fuel oil, oil or, rarely, Wood fuel, wood) to heat ...

of the North Eastern Railway. The class was introduced in 1914 as a rebuild of Wilson Worsdell's NER Class W 4-6-0T (introduced 1907). At the 1923 Grouping, they all passed to the

London and North Eastern Railway The London and North Eastern Railway (LNER) was the second largest (after London, Midland and Scottish Railway, LMS) of the "Big Four (British railway companies), Big Four" railway companies created by the Railways Act 1921 in Britain. It ope ...

, who placed them in their Class A6.

Modifications

Seven of the locomotives were fitted with

superheater A superheater is a device used to convert saturated steam or wet steam into superheated steam or dry steam. Superheated steam is used in steam turbines for electricity generation, in some steam engines, and in processes such as steam reforming. ...

s between 1937 and 1944.

British Railways

One locomotive was withdrawn in 1947 but the remaining nine passed to

British Railways British Railways (BR), which from 1965 traded as British Rail, was a state-owned company that operated most rail transport in Great Britain from 1948 to 1997. Originally a trading brand of the Railway Executive of the British Transport Commis ...

in 1948 and were numbered as follows: * Superheated: 69791-69793 and 69796-69797 * Non-superheated: 69794-69795 and 69798

Withdrawal

One locomotive was withdrawn in 1947 and the others had all been withdrawn by the end of 1951. None are preserved.

References

* 4-6-2T locomotives 2′C1′ n2t locomotives 2′C1′ h2t locomotives W1 Railway locomotives introduced in 1914 Scrapped locomotives Standard-gauge steam locomotives of Great Britain {{England-steam-loco-stub Passenger locomotives