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Southern Valve Gear
Southern valve gear was briefly popular on steam locomotives in the United States. It combines elements of the Walschaerts and Baker patterns. History Southern valve gear was devised by locomotive designers on the Southern Railway and used on many locomotives on that line. The first patent was issued to Wm. Sherman Brown in 1906. He continued work and another patent was issued July 23, 1912. The gear was first tested on Mikado 586 in February, 1913 at Southern Knoxville Shops. It was specified for some USRA standard locomotive designs, though many locomotives constructed to these patterns used Walschaerts or Baker valve gear instead. The Southern valve gear was used on many Southern Railway locomotives, including survivors 630 and 722. It was also used on East Broad Top numbers 16-18, which survive today. Operation Unlike the Walschaerts and Baker systems, the Southern valve gear dispensed with the combination lever which transmitted some of the crosshead motion to the valves. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USRA Heavy Santa Fe Diagram
USRA may refer to: * Undergraduate Student Research Award of the Natural Sciences and Engineering Research Council (NSERC USRA), a prestigious research award for top Canadian undergraduate researchers *''União dos Sindicatos Revolucionarios de Angola'' (Union of Revolutionary Trade Unions of Angola) *United Slot Racers Association, a slot racing organizations *United States Racquetball Association, former name of USA Racquetball * United States Railroad Administration (1917-1920), the nationalized rail system during World War I **USRA standard locomotives built by this administration *United States Railway Association The United States Railway Association (USRA) was a government-owned corporation created by United States federal law that oversaw the creation of Conrail, a railroad corporation that would acquire and operate bankrupt and other failing freight rai ... (1974-1987), the corporation that oversaw the creation of Conrail * Universities Space Research Association, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steam Locomotives
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, oil or, rarely, wood) to heat water in the locomotive's 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 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 coupled to it. 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 during the early 19th century and used for railway transport until the middle of the 20th century. Richard Trevithick bui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walschaerts Valve Gear
The Walschaerts valve gear is a type of valve gear used to regulate the flow of steam to the pistons in steam locomotives, invented by Belgium, Belgian railway mechanical engineering, engineer Egide Walschaerts in 1844. The gear is sometimes named without the final "s", since it was incorrectly patented under that name. It was extensively used in steam locomotives from the late 19th century until the end of the steam era. History The Walschaerts valve gear was slow to gain popularity. The Stephenson valve gear remained the most commonly used valve gear on 19th-century locomotives. However, the Walschaerts valve gear had the advantage that it could be mounted entirely on the outside of the locomotives, leaving the space between the locomotive frame, frames clear and allowing easy access for service and adjustment, which resulted in it being adopted in some articulated locomotives. The first locomotive fitted with the Walschaerts valve gear was built at the Belgian Tubize worksh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baker Valve Gear
After about 1910, the Baker valve gear was the main competitor to Walschaerts valve gear for steam locomotives in the United States. Strictly speaking it was not a valve gear but a variable expansion mechanism adapted to the Walschaerts layout replacing the expansion link and sliding die block. The Baker arrangement used more pivot bearings or ''pin joints'', but avoided the die slip inherent to the expansion link, with the aim of lessening wear and the need for service; it could also facilitate longer valve travel. History In the early 1900s there were many efforts to create a new valve gear to replace the by-then-standard Walschaerts valve gear. In the United States the Young, Southern, Caprotti and Franklin patterns were used on a few classes, but only the Baker pattern won more than limited acceptance. The design originated in the A.D. Baker Company, of Swanton, Ohio; a builder of steam traction engines. The idea came from an employee called Gifford but was developed by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Railway (U
Southern Railway or Southern Railroad may refer to: Argentina * Buenos Aires Great Southern Railway, Argentina * Southern Fuegian Railway, Tierra del Fuego, Argentina Australia * Main Southern railway line, New South Wales, Australia * Southern railway line, Queensland, Australia Austria * Austrian Southern Railway * Southern Railway (Austria) Canada * Canada Southern Railway, part of the New York Central Railroad * Canadian Pacific Railway * New Brunswick Southern Railway, part of the Canadian Pacific Railway * Quebec Southern Railway * Southern Manitoba Railway * Southern Prairie Railway, a tourist railway in Ogema, Saskatchewan * Southern Railway of British Columbia India * Southern Mahratta Railway, a railway company in British India founded in 1882 * Southern Punjab Railway, India * Southern Railway zone, India United Kingdom * Southern (Govia Thameslink Railway) * Southern Railway (UK), 1923–47 United States * Alabama Great Southern Railroad * Alton and Southern Ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USRA Standard
The USRA standard locomotives and railroad cars were designed by the United States Railroad Administration, the nationalized rail system of the United States during World War I. 1,856 steam locomotives and over 100,000 railroad cars were built to these designs during the USRA's tenure. The locomotive designs in particular were the nearest the American railroads and locomotive builders ever got to standard locomotive types, and after the USRA was dissolved in 1920 many of the designs were duplicated in number, 3,251 copies being constructed overall. The last steam locomotive built for a Class I railroad in the United States, an 0-8-0 built by the Norfolk and Western Railway in 1953, was a USRA design. A total of 97 railroads used USRA or USRA-derived locomotives. Steam locomotive types The USRA developed designs for 0-6-0 and 0-8-0 switchers, 2-6-6-2 and 2-8-8-2 Mallet locomotives, and both light and heavy versions of the 2-8-2, 2-10-2, 4-6-2, and 4-8-2 types. The light versio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Railway 630
Southern Railway 630 is a 2-8-0 "Consolidation" type steam locomotive built in February 1904 by the American Locomotive Company (ALCO) of Richmond, Virginia for the Southern Railway as a member of the Ks-1 class. It is currently owned and operated by the Tennessee Valley Railroad Museum (TVRM) in Chattanooga, Tennessee where it resides today for use on excursion trains. History Design and upgrades Built in 1904 by the American Locomotive Company's (ALCO) Richmond Works as one of 32 "K" class locomotives for the Southern Railway, No. 630 was standardized with driving wheels and rated at of tractive effort. It was originally built with Stephenson valve gear, sliding valves, alligator crossheads, and a saturated boiler. In 1917, the locomotive was upgraded with Southern valve gear, piston valves, and superheaters, which reclassified No. 630 as a "Ks" type. In the 1920s, it had more upgrades added such as new cylinders and valve assemblies, which allow the locomotive to develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Railway 722
Southern Railway 722 is a class "Ks-1" 2-8-0 " Consolidation" type steam locomotive built in September 1904 by the Baldwin Locomotive Works for the Southern Railway (SOU).. History Revenue service The No. 722 locomotive was assigned to work on the Southern Railway's Murphy Branch, where it was primarily used to haul freight trains between Asheville and Murphy, North Carolina.. In August 1952, No. 722 was retired from revenue service after it pulled the last steam-powered freight train on the Murphy Branch. Three months later, No. 722 and sister locomotive No. 630 were both purchased by the East Tennessee and Western North Carolina Railroad (ET&WNC) and renumbered to Nos. 208 and 207, respectively... After ET&WNC's acquirement, Southern cut down the size of the two Ks-1 locomotives' tender coal bunker to give the engineer a clear view during numerous switching moves and reverse operation. Excursion service On December 8, 1967, No. 208 (No. 722) and No. 207 (No. 630) were both trad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Broad Top
The East Broad Top Railroad (EBT) is a narrow gauge historic and heritage railroad headquartered in Rockhill Furnace, Pennsylvania. Operating from 1871 to 1956, it is one of the nation's oldest and best-preserved narrow-gauge railroads, and was designated a National Historic Landmark in 1964. The railroad is now preserved for use as a tourist attraction. After a nine-year closure, in February 2020 it was announced that the railroad had been purchased by a non-profit foundation and regular train service resumed in the summer of 2021. Notability The EBT is unusual in that it is a complete, original railroad rather than a collection of pieces from various locations, as most tourist railroads are. All six of the narrow-gauge steam locomotives that operated on the railroad in its last years as a coal hauler are still on site, and some were used for the excursion trains. Other original equipment includes a switcher steam locomotive (non-operational), operating track-gang c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stephenson Valve Gear
The Stephenson valve gear or Stephenson link or shifting link is a simple design of valve gear that was widely used throughout the world for various kinds of steam engines. It is named after Robert Stephenson but was invented by his employees. Historical background During the 1830s, the most popular valve drive for steam locomotives was known as '' gab motion'' in the United Kingdom and'' V-hook motion'' in the United States. The gab motion incorporated two sets of eccentrics and rods for each cylinder; one eccentric was set to give forward and the other backwards motion to the engine and one or the other could accordingly engage with a pin driving the distribution valve by means of the gabs: - vee-shaped ends to the eccentric rods supposed to catch the rocker driving the valve rod whatever its position. It was a clumsy mechanism, difficult to operate, and only gave fixed valve events. In 1841, two employees of Robert Stephenson and Company, draughtsman William Howe and patte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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