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

0-6-0 is the Whyte notation designation for steam locomotives with a wheel arrangement of no leading wheels, six powered and coupled driving wheels on three axles, and no trailing wheels. Historically, this was the most common wheel arrangement used o ...

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 ...

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 C ...

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 or gas 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 * ...

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, in some steam engines, and in processes such as steam reforming. ...

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 Rail 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 Comm ...

ways ownership in 1948 and numbered 65600-65644 (with gaps).

Withdrawal

Withdrawals started under

LNER LNER or L.N.E.R. may refer to: *London and North Eastern Railway (1923–1947), a former railway company in the United Kingdom *London North Eastern Railway (2018–), a train operating company in the United Kingdom * Liquid neutral earthing resi ...

ownership in 1933. British Railways quickly withdrew the remainder and all were scrapped by the end of 1951.

References

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