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2-4-0
Under the Whyte notation for the classification of steam locomotives, 2-4-0 represents the wheel arrangement of two leading wheels on one axle, four powered and coupled driving wheels on two axles and no trailing wheels. In most of North America it became known as a Porter.
The notation 2-4-0T indicates a tank locomotive of this wheel arrangement, on which its water and fuel is carried on board the engine itself, rather than in an attached tender. A subset is 2-4-0WT, a configuration in which the water is under the bolier in a well tank.
The 2-4-0 configuration was developed in the United Kingdom in the late 1830s or early 1840s as an enlargement of the 2-2-0 and 2-2-2 types, with the additional pair of coupled wheels giving better adhesion. The type was initially designed for freight haulage. One of the earliest examples was the broad-gauge GWR Leo Class, designed by Daniel Gooch and built during 1841 and 1842 by R. & W. Hawthorn, Leslie and Company; Fenton, Murray and Jackson; and Rothwell, Hick and Rothwell. Because of its popularity for a period with English railways, noted railway author C. Hamilton Ellis considered the 2-4-0 designation to have the nickname (under the Whyte notation) of Old English.
During 1846–47, Alexander Allan of the newly established London and North Western Railway (LNWR) created the Crewe type of locomotive, with a 2-2-2 wheel arrangement for passenger classes and 2-4-0 for freight. During the 1850s and 1860s, these designs were widely copied by other railways, both in the United Kingdom and overseas.
During the mid-1840s, John Hawkshaw developed a new style of 2-4-0 passenger locomotive with outside cylinders in front of the leading wheels and the rear driving axle behind the firebox. This layout provided steady running at high speeds, despite a long overhang at the front.
Joseph Beattie of the London and South Western Railway was one of the first British locomotive engineers to use this type on express locomotives. From 1858, he began experimenting with 2-4-0 designs for passenger work, culminating in his Seven-Foot 2-4-0 express passenger locomotives, built between 1859 and 1868. Beattie was also responsible for the long-lived 0298 Class of 2-4-0 well tanks, designed for suburban passenger work in 1874, some examples of which were still working in 1961. A locomotive of this type hauled the first Orient Express from Paris to Munich, a notable achievement for such a small engine.
After 1854, the Hawkshaw type of 2-4-0 was adopted by Beyer, Peacock and Company, who built many examples of the type for export, including to the Swedish State Railways in 1856 and the Zealand Railway in Denmark in 1870.
The New South Wales Government Railways F351 (later X10) class 2-4-0 tank locomotives were intended to haul suburban passenger trains in Sydney, and delivered in 1885 - 1887. After a derailment incident, from 1901, the entire class was withdrawn from passenger work. These locomotives were then allocated to shunting, yard and depot duties. Ten of the class were sold to various private railway operators, including for industrial use. Two are preserved.
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2-4-0
Under the Whyte notation for the classification of steam locomotives, 2-4-0 represents the wheel arrangement of two leading wheels on one axle, four powered and coupled driving wheels on two axles and no trailing wheels. In most of North America it became known as a Porter.
The notation 2-4-0T indicates a tank locomotive of this wheel arrangement, on which its water and fuel is carried on board the engine itself, rather than in an attached tender. A subset is 2-4-0WT, a configuration in which the water is under the bolier in a well tank.
The 2-4-0 configuration was developed in the United Kingdom in the late 1830s or early 1840s as an enlargement of the 2-2-0 and 2-2-2 types, with the additional pair of coupled wheels giving better adhesion. The type was initially designed for freight haulage. One of the earliest examples was the broad-gauge GWR Leo Class, designed by Daniel Gooch and built during 1841 and 1842 by R. & W. Hawthorn, Leslie and Company; Fenton, Murray and Jackson; and Rothwell, Hick and Rothwell. Because of its popularity for a period with English railways, noted railway author C. Hamilton Ellis considered the 2-4-0 designation to have the nickname (under the Whyte notation) of Old English.
During 1846–47, Alexander Allan of the newly established London and North Western Railway (LNWR) created the Crewe type of locomotive, with a 2-2-2 wheel arrangement for passenger classes and 2-4-0 for freight. During the 1850s and 1860s, these designs were widely copied by other railways, both in the United Kingdom and overseas.
During the mid-1840s, John Hawkshaw developed a new style of 2-4-0 passenger locomotive with outside cylinders in front of the leading wheels and the rear driving axle behind the firebox. This layout provided steady running at high speeds, despite a long overhang at the front.
Joseph Beattie of the London and South Western Railway was one of the first British locomotive engineers to use this type on express locomotives. From 1858, he began experimenting with 2-4-0 designs for passenger work, culminating in his Seven-Foot 2-4-0 express passenger locomotives, built between 1859 and 1868. Beattie was also responsible for the long-lived 0298 Class of 2-4-0 well tanks, designed for suburban passenger work in 1874, some examples of which were still working in 1961. A locomotive of this type hauled the first Orient Express from Paris to Munich, a notable achievement for such a small engine.
After 1854, the Hawkshaw type of 2-4-0 was adopted by Beyer, Peacock and Company, who built many examples of the type for export, including to the Swedish State Railways in 1856 and the Zealand Railway in Denmark in 1870.
The New South Wales Government Railways F351 (later X10) class 2-4-0 tank locomotives were intended to haul suburban passenger trains in Sydney, and delivered in 1885 - 1887. After a derailment incident, from 1901, the entire class was withdrawn from passenger work. These locomotives were then allocated to shunting, yard and depot duties. Ten of the class were sold to various private railway operators, including for industrial use. Two are preserved.