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Single (locomotive)
In railway terminology, a single is a steam locomotive with a single pair of driving wheels. Some sources use 'Single' only for the 2-2-2 type, but more commonly singles could have any number of leading or trailing wheels. See also * Caledonian Railway Single * Crampton locomotive * GWR 3031 Class * GNR Stirling 4-2-2 * Midland Railway 115 Class The Midland Railway 115 Class was the third of four classes of 4-2-2 steam locomotive, nicknamed "Spinners", designed by Samuel Waite Johnson. A total of 15 of the class were built between 1896 and 1899. They were capable of reaching speeds of ... References * illustrated description of some famous singles {{DEFAULTSORT:Single (Locomotive) Steam locomotive types ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stirling No 1 4-2-2
Stirling (; ; ) is a city in central Scotland, northeast of Glasgow and north-west of Edinburgh. The market town, surrounded by rich farmland, grew up connecting the royal citadel, the medieval old town with its merchants and tradesmen, the Old Bridge and the port. Located on the River Forth, Stirling is the administrative centre for the Stirling council area, and is traditionally the county town and historic county of Stirlingshire. Stirling's key position as the lowest bridging point of the River Forth before it broadens towards the Firth of Forth made it a focal point for travel north or south. It has been said that "Stirling, like a huge brooch clasps Highlands and Lowlands together". The city's status as "Gateway to the Highlands" also historically lent it great strategic importance—the credo "he who holds Stirling, holds Scotland" is sometimes attributed to Robert the Bruce. When Stirling was temporarily under Anglo-Saxon sway, according to a 9th-century legend, it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railway Terminology
Rail transport (also known as train transport) is a means of transport using wheeled vehicles running in tracks, which usually consist of two parallel steel rails. Rail transport is one of the two primary means of land transport, next to road transport. It is used for about 8% of passenger and freight transport globally, thanks to its energy efficiency and potentially high speed. Rolling stock on rails generally encounters lower frictional resistance than rubber-tyred road vehicles, allowing rail cars to be coupled into longer trains. Power is usually provided by diesel or electric locomotives. While railway transport is capital-intensive and less flexible than road transport, it can carry heavy loads of passengers and cargo with greater energy efficiency and safety. Precursors of railways driven by human or animal power have existed since antiquity, but modern rail transport began with the invention of the steam locomotive in the United Kingdom at the beginning of the 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 water in the locomotive's Boiler (power generation), boiler to the point where it becomes gaseous and its volume increases 1,700 times. Functionally, it is a steam engine on wheels. In most locomotives, the steam is admitted alternately to each end of its Steam locomotive components, cylinders in which pistons are mechanically connected to the locomotive's main wheels. Fuel and water supplies are usually carried with the locomotive, either on the locomotive itself or in a Tender (rail), tender coupled to it. #Variations, Variations in this general design include electrically powered boilers, turbines in place of pistons, and using steam generated externally. Steam locomotives were first developed in the United Kingdom of Great Britain an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Driving Wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons (or turbine, in the case of a steam turbine locomotive). On a conventional, non-articulated locomotive, the driving wheels are all coupled together with side rods (also known as coupling rods); normally one pair is directly driven by the main rod (or connecting rod) which is connected to the end of the piston rod; power is transmitted to the others through the side rods. On diesel and electric locomotives, the driving wheels may be directly driven by the traction motors. Coupling rods are not usually used, and it is quite common for each axle to have its own motor. Jackshaft drive and coupling rods were used in the past (e.g. in the Swiss Crocodile locomotive) but their use is now confined to shunter locomotives. On an articulated locomotive or a duplex locomotive, driving wheels are grouped into sets with wheels within each set linked together. Diameter Drivin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2-2-2
Under the Whyte notation for the classification of steam locomotives, 2-2-2 represents the wheel arrangement of two leading wheels on one axle, two powered driving wheels on one axle, and two trailing wheels on one axle. The wheel arrangement both provided more stability and enabled a larger Firebox (steam engine), firebox than the earlier 0-2-2 and 2-2-0 types. This wheel arrangement is sometimes described as a single (locomotive), Single, although this name could be used to describe any kind of locomotive with a single pair of driving wheels. Equivalent classifications Other equivalent classifications are: *UIC classification: 1A1 (also known as German classification and Italian classification) *French classification: 111 *Turkish classification: 13 *Swiss classification: 1/3 History The 2-2-2 configuration appears to have been developed by Robert Stephenson & Company in 1834, as an enlargement of their 2-2-0 ''Planet'' configuration, offering more stability and a larger Firebox ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leading Wheel
The leading wheel or leading axle or pilot wheel of a steam locomotive is an unpowered wheel or axle located in front of the driving wheels. The axle or axles of the leading wheels are normally located on a leading truck. Leading wheels are used to help the locomotive negotiate curves and to support the front portion of the boiler. Overview Many leading bogies do not have simple rotational motion about a vertical pivot. Bogies with a sliding motion controlled by springs was patented by William Adams in 1865. Other designs used swing links to take the weight of the bogie with a centering action. The first use of leading wheels is commonly attributed to John B. Jervis, who employed them in his 1832 design for a locomotive with four leading wheels and two driving wheels (a type that became known as the ''Jervis''). In the Whyte system of describing locomotive wheel arrangements, his locomotive would be classified as a 4-2-0, that is to say, it had four leading wheels, two dri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trailing Wheel
On a steam locomotive, a trailing wheel or trailing axle is generally an unpowered wheel or axle (Wheelset (rail transport), wheelset) located behind the driving wheels. The axle of the trailing wheels is usually located in a trailing Bogie, truck. On some large locomotives, a booster engine was mounted on the trailing truck to provide extra tractive effort when starting a heavy train and at low speeds on gradients. Trailing wheels were used in some early locomotives but fell out of favor for a time during the latter 19th century. As demand for more powerful locomotives increased, trailing wheels began to be used to support the crew cab and rear firebox area. Trailing wheels first appeared on American locomotives between 1890 and 1895, but their axle worked in rigid pedestals. It enabled boilers to be lowered, since the top of the main frames was dropped down behind the driving wheels and under the firebox. The firebox could also be longer and wider, increasing the heating su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caledonian Railway Single
Caledonian Railway Single No. 123 is a preserved Scotland, Scottish steam locomotive. The unique was built by Neilson and Company in 1886, works No. 3553, as an exhibition locomotive. In 1914 it was placed on the Caledonian Railway duplicate list, and renumbered 1123. It entered London, Midland and Scottish Railway service in 1923 and the LMS renumbered it 14010 and gave it the power classification 1P. During the 1920s it was allocated to working the directors' saloon, but it was returned to ordinary service in 1930. The locomotive was withdrawn in 1935, by which time it was the last single-wheeled express engine running in Britain, and set aside for preservation.''The observer's book of railway locomotives of Britain'', revised and edited by H. C. Casserley (1962), p.30 This engine could reach speeds of up to . Restored to steam by British Railways in 1958, it ran railtours and enthusiast specials until the end of steam in Scotland. History No. 123 was designed by the Caled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crampton Locomotive
A Crampton locomotive is a type of steam locomotive designed by Thomas Russell Crampton and built by various firms from 1846 in rail transport, 1846. The main British builders were Tulk and Ley and Robert Stephenson and Company. Notable features were a low boiler and large driving wheels. The crux of the Crampton patent was that the single driving axle was placed behind the firebox, so that the driving wheels could be very large. This helped to give this design a low centre of gravity, so that it did not require a very broad-gauge track to travel safely at high speeds. Its wheel arrangement was usually or . Design variations Because the single driving axle was behind the firebox, Crampton locomotives usually had outside cylinders. However, some inside cylinder versions were built using indirect drive, then known as a ''jackshaft''. The inside cylinders drove a crankshaft located in front of the firebox and the crankshaft was connected to the driving wheels by outside rods. S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GWR 3031 Class
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 s of the 3001 Class. The first eight members of the class (numbers 3021-3028, built April–August 1891) were built as convertible broad gauge locomotives, being converted to standard gauge in mid-1892, at the end of broad gauge running on the Great Western Railway. A further 22 were built in late 1891 and early 1892, this time as standard gauge engines. Although the 3001 class were fitted with larger boilers than earlier GWR 2-2-2 classes, the diameter of the boiler was constrained by its position between the driving wheels. Thus boiler capacity could only be increased by making the boiler longer, not wider, bringing the smokebox and cylinders in front of the leading axle. The extra weight of the larger boilers was borne by the l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GNR Stirling 4-2-2
The Great Northern Railway (Great Britain), Great Northern Railway (GNR) No. 1 class Stirling Single is a class of steam locomotive designed for Express train, express passenger work. Designed by Patrick Stirling (railway engineer), Patrick Stirling, they are characterised by a single pair of large (8 ft 1 in) driving wheels which led to the nickname ''"eight-footer"''. Originally the locomotive was designed to haul up to 26 passenger carriages at an average speed of . They could reach speeds of up to 85 mph (137 km/h). Development On his arrival at GNR, Stirling set out to standardise the railway's rolling stock. He also borrowed a 'single-wheeler' from the Great Eastern Railway and, in 1868, designed two versions of a arrangement with driving wheels. The outcome in 1870 was a locomotive with driving wheels with outside cylinders, designed specifically for high-speed expresses between York and London. The British norm at the time were inside cylinders. Ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Midland Railway 115 Class
The Midland Railway 115 Class was the third of four classes of 4-2-2 steam locomotive, nicknamed "Spinners", designed by Samuel Waite Johnson. A total of 15 of the class were built between 1896 and 1899. They were capable of reaching speeds of up to . One engine, No. 673, is preserved in the National Collection. Classes of Midland Railway 4-2-2 locomotives Single-driver locomotives had been superseded in the late 19th century as loads increased, but were then reintroduced when steam sanding allowed better adhesion. Five similar classes were built, with slight enlargements each time, and details as follows: Construction history The fifteen locomotives in the 115 class were built in two batches, both at Derby Works. Service history It was quite common for the class to pull an express weighing , which suited them perfectly. Given a dry rail, they could maintain a tight schedule with . Speeds up to were not uncommon, and the sight of their large, spinning driving wheels with n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
