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4-2-4T
Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of four leading wheels on two axles, two powered driving wheels on one axle, and four trailing wheels on two axles. This type of locomotive is often called a Huntington type. The configuration was most often used for tank engines, which is noted by adding letter suffixes to the configuration, such as for a conventional side-tank locomotive, for a saddle-tank locomotive, for a well-tank locomotive and for a rack-equipped tank locomotive. Overview This wheel arrangement was mainly used on various tank locomotive configurations. Eight 4-2-4 well- and back-tank locomotives which entered service on the Bristol and Exeter Railway in 1853 appear to have been the first with this wheel arrangement. The engine was designed by James Pearson, the railway company's engineer, and featured single large flangeless driving wheels between two supporting four-wheeled bogies. The water was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol And Exeter Railway 4-2-4T Locomotives
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and Exeter Railway was amalgamated into the Great Western Railway on 1 January 1876, and the last of the 4-2-4Ts was withdrawn in 1885. The distinctive designs by James Pearson, the railway company's engineer, featured single large flangeless driving wheels and two supporting bogies. The water was carried in both well and back tanks, leaving the boilers exposed in the same way as tender locomotives. The three types are distinguished by the size of driving wheel; the early wheels being replaced by smaller ones on later designs. List of locomotives 9 feet * 39 (1853–1868) * 40 (1853–1873) * 41 (1853–1873) * 42 (1854–1868) * 43 (1854–1871) * 44 (1854–1870) * 45 (1854–1870) * 46 (1854–1870) The first of Pearson's 4-2-4Ts were eight locomotives built by Rothwell and Company in 1853 and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Pearson (engineer)
James Pearson was a 19th-century English railway engineer. He is best remembered as the designer of the distinctive Bristol and Exeter Railway 4-2-4T locomotives. Career South Devon Railway James Pearson was the engineer responsible for the daily operations of Isambard Kingdom Brunel's ill-fated atmospheric equipment on the South Devon Railway. Trains only ran in service from 13 September 1847 to 9 September 1848, but he was retained while the equipment was disposed of. Bristol and Exeter Railway In May 1850 he became the Bristol and Exeter Railway's Locomotive Engineer. Under his control the railway set up new locomotive works at Bristol Temple Meads. These opened in 1851 and built most of the railway's new broad gauge locomotives from 1859. Locomotives designs The most significant locomotives designed by James Pearson were: * 1851 Bristol and Exeter Railway 2-2-2T locomotives – 7 small tank locomotives * 1854 Bristol and Exeter Railway 4-2-4T locomotives – 8 locomoti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol And Exeter Railway
The Bristol & Exeter Railway (B&ER) was an English railway company formed to connect Bristol and Exeter. It was built on the broad gauge and its engineer was Isambard Kingdom Brunel. It opened in stages between 1841 and 1844. It was allied with the Great Western Railway (GWR), which built its main line between London and Bristol, and in time formed part of a through route between London and Cornwall. It became involved in the gauge wars, a protracted and expensive attempt to secure territory against rival companies supported by the London and South Western Railway (LSWR) which used the narrow gauge, later referred to as ''standard gauge''. At first it contracted with the GWR for that company to work the line, avoiding the expense of acquiring locomotives, but after that arrangement expired in 1849, the B&ER operated its own line. It opened a number of branches within the general area it served: to Clevedon, Cheddar, Wells, Weston-super-Mare, Chard, Yeovil and Tiverton. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Dutton Road-rail Tractors
The South African Railways Dutton road-rail tractors of 1923 were road-rail steam tractors. In 1917, the South African Railways conducted trials with a prototype petrol-paraffin powered Dutton road-rail tractor. In 1924, it placed two production model steam rail tractors in service on the new narrow gauge line between Naboomspruit and Singlewood in Transvaal. One was constructed as a road-rail tractor while the other was constructed as a bi-directional rail-only tractor.Espitalier, T.J.; Day, W.A.J. (1945). ''The Locomotive in South Africa - A Brief History of Railway Development. Chapter VII - South African Railways (Continued).'' South African Railways and Harbours Magazine, October 1945. pp. 782-783. Branch line unprofitability The unprofitability of many branch line operations had been a problem for the South African Railways (SAR) from the outset. The question of non-paying branch lines was raised by Sir William Hoy, South African Railways and Harbours General Manager, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GWR Dean Experimental Locomotives
During the 1880s and 1890s, William Dean constructed a series of experimental locomotives to test various new ideas in locomotive construction for the Great Western Railway. Locomotives No. 1 This locomotive appeared in 1880 as a 4-4-0T, but was rebuilt in 1882 as a 2-4-0T. It was withdrawn in 1924. No. 7 Number 7 was built in 1886 at Swindon as a tandem compound 2-4-0 with coupled wheels and outside frames. The diameter low pressure cylinders were in front of the high pressure cylinders, the pistons being carried on the same piston rod. Valves for the low pressure cylinders were below, and those for the high pressure cylinders above the cylinders. One set of valve gear drove each pair of valve spindles. This setup proved difficult to access for maintenance, and the locomotive was relegated to minor routes. It was broken up in 1890. The wheel centres were used in building No. 7 of the Armstrong class. No. 8 Number 8 was built in 1886 as a broad gauge convertible 2-4-0 ta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wheel Arrangement
In rail transport, a wheel arrangement or wheel configuration is a system of classifying the way in which wheels are distributed under a locomotive. Several notations exist to describe the wheel assemblies of a locomotive by type, position, and connections, with the adopted notations varying by country. Within a given country, different notations may also be employed for different kinds of locomotives, such as steam, electric, and diesel powered. Especially in steam days, wheel arrangement was an important attribute of a locomotive because there were many different types of layout adopted, each wheel being optimised for a different use (often with only some being actually "driven"). Modern diesel and electric locomotives are much more uniform, usually with all axles driven. Major notation schemes The main notations are the Whyte notation (based on counting the wheels), the AAR wheel arrangement notation (based on counting either the axles or the bogies), and the UIC classific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Pacific Railroad
The Central Pacific Railroad (CPRR) was a rail company chartered by U.S. Congress in 1862 to build a railroad eastwards from Sacramento, California, to complete the western part of the "First transcontinental railroad" in North America. Incorporated in 1861, CPRR ceased operation in 1885 when it was acquired by Southern Pacific Railroad as a leased line. Following the completion of the Pacific Railroad Surveys in 1855, several national proposals to build a transcontinental railroad failed because of the energy consumed by political disputes over slavery. With the secession of the South in 1861, the modernizers in the Republican Party controlled the US Congress. They passed legislation in 1862 authorizing the central rail route with financing in the form of land grants and government railroad bond, which were all eventually repaid with interest. The government and the railroads both shared in the increased value of the land grants, which the railroads developed. The construct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whyte Notation
Whyte notation is a classification method for steam locomotives, and some internal combustion locomotives and electric locomotives, by wheel arrangement. It was devised by Frederick Methvan Whyte, and came into use in the early twentieth century following a December 1900 editorial in ''American Engineer and Railroad Journal''. The notation was adopted and remains in use in North America and the United Kingdom to describe the wheel arrangements of steam locomotives (in the latter case also for diesel and electric locomotives), but for modern locomotives, multiple units and trams it has been supplanted by the UIC system in Europe and by the AAR system (essentially a simplification of the UIC system) in North America. Structure of the system Basic form The notation in its basic form counts the number of leading wheels, then the number of driving wheels, and finally the number of trailing wheels, numbers being separated by dashes. For example, a locomotive with two leadi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
4-2-2
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. Other equivalent classifications are: :UIC classification: 2A1 : French classification: 211 : Turkish classification: 14 : Swiss classification: 1/4 Like other steam locomotive types with single pairs of driving wheels, they were also known as singles. History The 4-2-2 configuration offered designers eight wheels to spread the weight of a larger locomotive, but prior to the bogies (invented in 1830s) becoming popular, created a long rigid wheelbase with limited adhesion. As a result, the type was relatively rare until the 1870s. The first steam locomotive made by Borsig of Berlin in 1841, the ''Borsig'' No 1, was a 4-2-2, but the company quickly reverted to the more common 2-2-2 configuration. UK developments The London and North Western Railway No. 3020 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dugald Drummond
Dugald Drummond (1 January 1840 – 8 November 1912) was a Scottish steam locomotive engineer. He had a career with the North British Railway, LB&SCR, Caledonian Railway and London and South Western Railway. He was the older brother of the engineer Peter Drummond, who often followed Dugald's ideas in his own work. He was a major locomotive designer and builder and many of his London and South Western Railway engines continued in main line service with the Southern Railway to enter British Railways service in 1947. Career Drummond was born in Ardrossan, Ayrshire on 1 January 1840. His father was permanent way inspector for the Bowling Railway. Drummond was apprenticed to Forest & Barr of Glasgow gaining further experience on the Dumbartonshire and Caledonian Railways. He was in charge of the boiler shop at the Canada Works, Birkenhead of Thomas Brassey before moving to the Edinburgh and Glasgow Railway's Cowlairs railway works in 1864 under Samuel Waite Johnson. He ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flange
A flange is a protruded ridge, lip or rim, either external or internal, that serves to increase strength (as the flange of an iron beam such as an I-beam or a T-beam); for easy attachment/transfer of contact force with another object (as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera); or for stabilizing and guiding the movements of a machine or its parts (as the inside flange of a rail car or tram wheel, which keep the wheels from running off the rails). Flanges are often attached using bolts in the pattern of a bolt circle. The term "flange" is also used for a kind of tool used to form flanges. Plumbing or piping A flange can also be a plate or ring to form a rim at the end of a pipe when fastened to the pipe (for example, a closet flange). A blind flange is a plate for covering or closing the end of a pipe. A flange joint is a connection of pipes, where the connecting pieces have flanges by which the parts are bolted together. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forney Locomotive
The Forney is a type of tank locomotive patented by Matthias N. Forney between 1861 and 1864 and used predominantly in the USA. Forney design Forney locomotives include the following characteristics: * An wheel arrangement, that is four driving wheels followed by a truck with four wheels (though the term has become somewhat generic; many small tank engines of various wheel arrangements have been called Forneys). * No flange on the second pair of driving wheels. * The fuel bunker and water tank placed over the four-wheel truck. History The locomotives were set up to run cab (or bunker) first, effectively as a (or ), though the type achieved popularity for its ability to operate well in either direction. The wheel arrangement, with its three-point suspension, was noted for its good tracking ability, while the flangeless middle wheels allowed the locomotive to round tight curves. Placing the fuel and water over the truck rather than the driving wheels meant the locos had a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
