The Mallet locomotive is a type of articulated steam railway locomotive, invented by the Swiss engineer Anatole Mallet (1837–1919).
Under the Whyte notation for the classification of steam locomotives by wheel arrangement, 4-6-0 represents the configuration of four leading wheels on two axles in a leading bogie and six powered and coupled driving wheels on three axles with the absence of trailing wheels. In the mid 19th century, this wheel arrangement became the second most popular configuration for new steam locomotives in the United States, where this type is commonly referred to as a ten-wheeler. As a locomotive pulling trains of lightweight all-wood passenger cars in the 1890–1920s, it was exceptionally stable at near 100 mph (160 km/h) speeds on the New York Central's New York to Chicago Water Level Route and on the Reading Railroad's Camden to Atlantic City, NJ, line. As passenger equipment grew heavier with all steel construction, heavier locomotives replaced the ten-wheeler.
The first Locomotives of the Great Western Railway (GWR) were specified by Isambard Kingdom Brunel but Daniel Gooch was soon appointed as the railway's Locomotive Superintendent. He designed several different 7 ft 1⁄4 in broad gauge types for the growing railway, such as the Firefly and later Iron Duke Class 2-2-2s. In 1864 Gooch was succeeded by Joseph Armstrong who brought his standard gauge experience to the workshops at Swindon. To replace some of the earlier locomotives, he put broad gauge wheels on his standard gauge locomotives and from this time on all locomotives were given numbers, including the broad gauge ones that had previously carried just names.
Under the Whyte notation for the classification of steam locomotives, 4-2-2 represents the wheel arrangement of four leading wheels on two axles, two powered driving wheels on one axle, and two trailing wheels on one axle.
The Great Western Railway 4900 Class or Hall Class is a class of 4-6-0 mixed traffic steam locomotives designed by Charles Collett for the Great Western Railway. A total of 259 were built at Swindon Works, numbered 4900–4999, 5900–5999 and 6900–6958. The LMS Stanier Class 5 4-6-0 and LNER Thompson Class B1 both drew heavily on design features of the Hall Class. After nationalisation in 1948, British Railways gave them the power classification 5MT.
Under the Whyte notation for the classification of steam locomotives, 0-8-2 represents the wheel arrangement of no leading wheels, eight powered and coupled driving wheels on four axles, and two trailing wheels on one axle.
Under the Whyte notation for the classification of steam locomotives, 0-4-2 represents the wheel arrangement with no leading wheels, four powered and coupled driving wheels on two axles and two trailing wheels on one axle. While the first locomotives of this wheel arrangement were tender engines, the configuration was later often used for tank engines, which is noted by adding letter suffixes to the configuration, such as 0-4-2T for a conventional side-tank locomotive, 0-4-2ST for a saddle-tank locomotive, 0-4-2WT for a well-tank locomotive and 0-4-2RT for a rack-equipped tank locomotive. The arrangement is sometimes known as Olomana after a Hawaiian 0-4-2 locomotive of 1883.
The Great Western Railway (GWR) 4200 Class is a class of 2-8-0T steam locomotives.
The Great Western Railway (GWR) 7200 Class is a class of 2-8-2T steam locomotive. They were the only 2-8-2Ts built and used by a British railway, and the largest tank engines to run on the Great Western Railway.
The Great Western Railway (GWR) 4500 Class or Small Prairie is a class of 2-6-2T steam locomotives.
The Metropolitan Railway A Class and B Class were 4-4-0T condensing steam locomotives built for the Metropolitan Railway by Beyer Peacock, first used in 1864. A total of 40 A Class and 26 of the slightly different B Class were delivered by 1885. Used underground, the locomotives condensed their steam, and coke or smokeless coal was burnt to reduce the smoke.
The Dean Single, 3031 Class, or Achilles Class was a type of steam locomotive built by the British Great Western Railway between 1891 and 1899. They were designed by William Dean for passenger work. The first 30 members of the class were built as 2-2-2s of the 3001 Class.
The 14 Bristol and Exeter Railway 4-2-4T locomotives were broad gauge 4-2-4T steam locomotives built to three different designs. The first entered service in 1853. The Bristol and Exeter Railway was amalgamated into the Great Western Railway on 1 January 1876, and the last of the 4-2-4Ts was withdrawn in 1885.
This Stephenson Class were eleven 0-6-2T locomotives introduced into traffic in 1898 designed and built by Robert Stephenson and Company for the Port Talbot Railway. They predated the somewhat similar but larger Rhymney M class by six years.
The Sharp Stewart 0-8-2T locomotives were 0-8-2T steam tank locomotives designed and built by Sharp, Stewart and Company for the Port Talbot Railway and Docks Company, south Wales. Three were built in 1901, works nos. 4794 - 4796. They were numbered 17-19 and became Great Western Railway numbers 1358-1360.
The Port Talbot Railway and Docks Company (PTR&D) was formed in 1894 to secure the means of bringing minerals, chiefly coal, to the harbour in South Wales. It took over the docks at Port Talbot that had been operated by the Port Talbot Company. It opened its main line in 1897 and reached a connection with the Great Western Railway Garw Valley line the following year. A branch line to collieries near Tonmawr also opened in 1898. The lines were extremely steeply graded and operation was difficult and expensive, but the company was successful. Passenger operation on the main line started in 1898, but this was never a principal part of the business. For some time most of the passenger train service was operated by a railmotor that was the largest ever to work in the United Kingdom. Also in 1898 the Ogmore Valleys Extension (OVE) line, a part of the PTR&D, was opened. It had been projected as a defensive measure against competitive incursion, and it led from Margam Junction towards Tondu.
The Barry Railway class H was a small class of seven 0-8-2T tank locomotives built for the Barry Railway by Sharp Stewart in 1896. When they were introduced they were the first locomotives in Britain to use the 0-8-2 wheel arrangement.
The South African Railways Class 20 2-10-2 of 1935 was a steam locomotive.
The South African Railways Class 18 2-10-2 of 1927 was a steam locomotive.
Barry Railway Class D were 0-8-0 steam tender engines of the Barry Railway in South Wales. They were built to a standard Sharp, Stewart and Company design modified by John Waddington Mann, the Chief Mechanical Engineer for the Swedish & Norwegian Railway. In fact, 20 of these locomotives were ordered by this railway. However the company ran into severe financial difficulty with the result that only one and a half locomotives were paid for by the S&N.
