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 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.
A Mallet locomotive is a type of compound articulated steam locomotive, invented by the Swiss engineer Anatole Mallet (1837–1919).
A tender or coal-car is a special rail vehicle hauled by a steam locomotive containing its fuel and water. Steam locomotives consume large quantities of water compared to the quantity of fuel, so their tenders are necessary to keep them running over long distances. A locomotive that pulls a tender is called a tender locomotive. Locomotives that do not have tenders and carry all their fuel and water on board the locomotive itself are called tank locomotives or tank engines.
Union Pacific Railway Engine No. 737 or UP 737 is a 4-4-0 "American" type steam locomotive. It is currently the oldest preserved Union Pacific steam locomotive. It was originally acquired by the Union Pacific Railroad (UP) in 1887.
Under the Whyte notation for the classification of steam locomotives, 4-8-4 represents the wheel arrangement of four leading wheels on two axles, eight powered and coupled driving wheels on four axles and four trailing wheels on two axles. The type was first used by the Northern Pacific Railway, and initially named the Northern Pacific, but railfans and railroad employees have shortened the name since its introduction. It is most-commonly known as a Northern.
Under the Whyte notation for the classification of steam locomotives, 2-6-2 represents the wheel arrangement of two leading wheels, six coupled driving wheels and two trailing wheels. This arrangement is commonly called a Prairie.
Live steam is steam under pressure, obtained by heating water in a boiler. The steam may be used to operate stationary or moving equipment.
Atchison, Topeka and Santa Fe 3751 is a class "3751" 4-8-4 "Heavy Mountain" type steam locomotive built in May 1927 by the Baldwin Locomotive Works in Eddystone (Philadelphia), Pennsylvania for the Atchison, Topeka & Santa Fe Railway (ATSF). No. 3751 was the first 4-8-4 steam locomotive built for the Santa Fe and was referenced in documentation as type: "Heavy Mountain", "New Mountain", or "Mountain 4-wheel trailer". No. 3751 served in passenger duties until being retired in 1953.
The Durango and Silverton Narrow Gauge Railroad, often abbreviated as the D&SNG, is a 3 ft (914 mm) narrow-gauge heritage railroad that operates on 45.2 mi (72.7 km) of track between Durango and Silverton, in the U.S. state of Colorado. The railway is a federally-designated National Historic Landmark and was also designated by the American Society of Civil Engineers as a National Historic Civil Engineering Landmark in 1968.
Baldwin 60000 is an experimental steam locomotive built by the Baldwin Locomotive Works in Eddystone, Pennsylvania, in 1926, during the height of the railroading industry. It received its number for being the 60,000th locomotive built by Baldwin.
The NZR JA class was a class of fifty-one 4-8-2 steam locomotives operated by the New Zealand Railways Department (NZR). The locomotives were built in two batches; the first batch was constructed in-home at the Hillside Workshops at Dunedin between 1946 and 1956, while the second batch was produced by the North British Locomotive Company (NBL) of Glasgow, Scotland in 1951. To differentiate between the two batches, the locomotives were identified by their builder.
The NZR KA class of 1939 was a class of mixed traffic 4-8-4 steam locomotives that operated on New Zealand's railway network. They were built after the success of the K class to meet the increasing traffic demands of the New Zealand Railways Department. The locomotives first appeared with distinctive streamlining, mainly to hide their ACFI feedwater heater systems.
The NZR J class was a class of forty 4-8-2 steam locomotives operated by the New Zealand Railways Department (NZR). Although designed to work on the lighter secondary lines, the class was frequently used on mainline express passenger trains as well as freight. When first introduced, the class boasted distinctive streamlining, which was later removed from 1947 onwards for maintenance reasons. Three of this class remained in service until the end of steam operation on 26 October 1971, when they were withdrawn and entered into preservation. This class should not be confused with the earlier J class from 1874.
The Eureka Springs & North Arkansas Railway is a for-profit passenger tourist railway established by the late Robert Dortch, Jr. and his wife Mary Jane in 1981 in Eureka Springs, Arkansas. The railway offers one-hour excursion tours, a catered luncheon train and a catered dinner train - each lasting a little more than one hour, from April through October. It operates along 2.5 miles (4.0 km) of restored track right-of-way formerly belonging to the defunct Arkansas & Ozarks Railway Co - the last incarnation of the North Arkansas Line.
Atchison, Topeka and Santa Fe 3759 is a class 3751 4-8-4 "Heavy Mountain" type steam railway locomotive built by the Baldwin Locomotive Works in 1928. It is on display in Locomotive Park, located between Andy Devine Avenue and Beale Street in Kingman, Arizona. The park was established in August 1957 with AT&SF 3759 donated to the City of Kingman in recognition of Kingman's history with the railroad. The locomotive is termed a Mountain type on the nearby information plaque, and also in the city's descriptive material which is correct for the Santa Fe. ATSF 4-8-4s were referenced in documentation as type "Heavy Mountain", "New Mountain" or "Mountain 4-wheel trailer."
The D55 class was a class of 2-8-0 steam locomotives built by Clyde Engineering for the New South Wales Government Railways in Australia.
Córas Iompair Éireann No. CC1, generally known as the Turf Burner, was a prototype 0-6-6-0 articulated steam locomotive designed by Oliver Bulleid to burn turf and built at CIÉ's Inchicore Works in Dublin. CC1 shared some, but not all, of the characteristics of Bulleid's previous attempt to develop a modern steam locomotive, the Leader. Like the one completed Leader, CC1 had a relatively short career and was never used in front-line service. It was the last steam locomotive to be constructed for an Irish railway.
The GWR 101 Class consisted of a single experimental 0-4-0T side-tank steam locomotive. It was built at GWR Swindon Works under the direction of George Jackson Churchward in June 1902.
Spokane, Portland and Seattle Railway No. 539 is the only preserved example of the class O-3 2-8-2 "Mikado" steam locomotive. It was built by the American Locomotive Company in 1917 for the Northern Pacific Railway as engine No. 1762. It was sold to the Spokane, Portland and Seattle Railway and renumbered 539, in August 1944. It was reconfigured and converted to oil burning in January 1946. The locomotive was retired in 1957, and it was displayed in Esther Short Park, Washington, until 1997. That year, it was moved to Battle Ground for a potential restoration that never came to fruition. In 2007, it was acquired by the Grand Canyon Railway and moved to Williams, Arizona for an operational restoration that also never came to fruition. In 2019, No. 539 was purchased again by the Port of Kalama, who moved it back to Washington and put it on static display inside the Port's Interpretive Center that was constructed in 2014.
The Great Western Railway (GWR) experimented with oil burning steam locomotives at two points in its history. A single experimental tank engine was constructed to burn oil in 1902, and 37 engines of four different classes were converted to burn oil between 1946 and 1950. Neither experiment resulted in the long-term use of oil as fuel for steam locomotives. A single pannier tank locomotive was also converted under British Rail in 1958.
