The NER Class P (LNER Class J24) was a class of

0-6-0 Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of no leading wheels, six powered and coupled driving wheels on three axles and no trailing wheels. This was the most common wheel arrangemen ...

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 of the North Eastern Railway. They were designed by

Wilson Worsdell Wilson Worsdell (7 September 1850 – 14 April 1920) was an English locomotive engineer who was locomotive superintendent of the North Eastern Railway from 1890 to 1910. He was the younger brother of T.W. Worsdell. Wilson was born at Monks Co ...

for mineral traffic.

Modifications

As built, the locomotives had

slide valve The slide valve is a rectilinear valve used to control the admission of steam into and emission of exhaust from the cylinder of a steam engine. Use In the 19th century, most steam locomotives used slide valves to control the flow of steam into ...

s but 20 were fitted with

piston valve A "piston valve" is a device used to control the motion of a fluid along a tube or pipe by means of the linear motion of a piston within a chamber or cylinder. Examples of piston valves are: * The valves used in many brass instruments * The va ...

s and

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, steam engines, and in processes such as steam reforming. There ar ...

s between 1914 and 1920. The cylinder bore was increased by half an inch at the same time. In the infobox (right) 'ns' denotes non-superheated and 'su' denotes superheated. Some locomotives later had their superheaters removed but the piston valves were retained.

British Railways

Thirty-four locomotives survived into

British Railways British Railways (BR), which from 1965 traded as British Rail, was a state-owned company that operated most of the overground rail transport in Great Britain from 1948 to 1997. It was formed from the nationalisation of the Big Four British rai ...

ownership in 1948 and their BR numbers were 65600-65644 (with gaps).

Withdrawal

Withdrawals started under

LNER LNER may refer to: * London and North Eastern Railway, a railway company in the United Kingdom from 1923 until 1947 * London North Eastern Railway, a train operating company in the United Kingdom since 2018 * Liquid neutral earthing resistor, a typ ...

ownership in 1933.

British Rail British Railways (BR), which from 1965 traded as British Rail, was a state-owned company that operated most of the overground rail transport in Great Britain from 1948 to 1997. It was formed from the nationalisation of the Big Four British rai ...

ways quickly withdrew the remaining locomotives and all had gone by the end of 1951. None were preserved.

References

{{LNER Locomotives 0-6-0 locomotives P Railway locomotives introduced in 1894 Scrapped locomotives Standard gauge steam locomotives of Great Britain Freight locomotives