NBR Class M 4-4-0
Encyclopedia
The NBR Class M was a class of 4-4-0
steam locomotive
of the North British Railway
. The class was rebuilt during the tenures of William P. Reid
and Walter Chalmers
from three earlier classes, the "574", "633", and "729" which had been designed by Matthew Holmes
.
The locomotives passed to the London and North Eastern Railway
in 1923 but withdrawals began in 1931 and only seven of the class passed to British Railways in 1948.
4-4-0
Under the Whyte notation for the classification of steam locomotives, 4-4-0 represents the wheel arrangement of four leading wheels on two axles , four powered and coupled driving wheels on two axles, and no trailing wheels...
steam locomotive
Steam locomotive
A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...
of the North British Railway
North British Railway
The North British Railway was a Scottish railway company that was absorbed into the London and North Eastern Railway at the Grouping in 1923.-History:...
. The class was rebuilt during the tenures of William P. Reid
William P. Reid
William Paton Reid was apprenticed to the Cowlairs railway works of the North British Railway in 1879 and was Locomotive Superintendent from 1903-1919. He was awarded a CBE in 1920. He was born, and died, in Glasgow, Scotland...
and Walter Chalmers
Walter Chalmers
Walter Chalmers followed his father into the North British Railway, starting as an apprentice at Cowlairs railway works. In 1904 he became Chief Draughtsman and, from 1920–1922, he was Chief Mechanical Engineer.-Locomotives:...
from three earlier classes, the "574", "633", and "729" which had been designed by Matthew Holmes
Matthew Holmes
Matthew Holmes was Chief Mechanical Engineer of the North British Railway from 1882 to 1903..-Locomotives:Locomotives designed by M. Holmes include:* NBR Class C, later LNER Class J36, 0-6-0...
.
The locomotives passed to the London and North Eastern Railway
London and North Eastern Railway
The London and North Eastern Railway was the second-largest of the "Big Four" railway companies created by the Railways Act 1921 in Britain...
in 1923 but withdrawals began in 1931 and only seven of the class passed to British Railways in 1948.