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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 in 1849 at the Belgian Tubiz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
60163 Tornado Motion
6 (six) is the natural number following 5 and preceding 7. It is a composite number and the smallest perfect number. In mathematics A six-sided polygon is a hexagon, one of the three regular polygons capable of tessellation, tiling the plane. A hexagon also has 6 Edge (geometry), edges as well as 6 internal and external angles. 6 is the second smallest composite number. It is also the first number that is the sum of its proper divisors, making it the smallest perfect number. It is also the only perfect number that doesn't have a digital root of 1. 6 is the first unitary perfect number, since it is the sum of its positive proper unitary divisors, without including itself. Only five such numbers are known to exist. 6 is the largest of the four Harshad number, all-Harshad numbers. 6 is the 2nd superior highly composite number, the 2nd colossally abundant number, the 3rd triangular number, the 4th highly composite number, a pronic number, a congruent number, a harmonic divisor nu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NZR B Class (1874)
The NZR B class of 1874 was the first of two steam locomotive classes to be designated as B by the Railways Department that then oversaw New Zealand's national rail network (the second B class was introduced in 1899). Ordered from the Avonside Engine Company in 1874, the locomotives were of the Double Fairlie type and were the first British-built locomotives to feature Walschaerts valve gear. They were not the first Double Fairlies to operate in New Zealand, as the first two members of the E class had commenced operations in 1872. Introduction The first member of the B class, nicknamed ''Snake'', was introduced in September 1874 and it worked in Auckland; it was followed by its partner ''Lady Mordaunt'' on 5 April 1875, which was based in Otago. This locomotive had been ordered by the Otago Provincial Council to work the lightly laid Awamoko branch, but advice received by the council before it an arrived was that it was too heavy. It was sent to work elsewhere and two m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germany
Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total population of over 84 million in an area of , making it the most populous member state of the European Union. It borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, and France, Luxembourg, Belgium, and the Netherlands to the west. The Capital of Germany, nation's capital and List of cities in Germany by population, most populous city is Berlin and its main financial centre is Frankfurt; the largest urban area is the Ruhr. Settlement in the territory of modern Germany began in the Lower Paleolithic, with various tribes inhabiting it from the Neolithic onward, chiefly the Celts. Various Germanic peoples, Germanic tribes have inhabited the northern parts of modern Germany since classical ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Europe
Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east. Europe shares the landmass of Eurasia with Asia, and of Afro-Eurasia with both Africa and Asia. Europe is commonly considered to be Boundaries between the continents#Asia and Europe, separated from Asia by the Drainage divide, watershed of the Ural Mountains, the Ural (river), Ural River, the Caspian Sea, the Greater Caucasus, the Black Sea, and the waterway of the Bosporus, Bosporus Strait. "Europe" (pp. 68–69); "Asia" (pp. 90–91): "A commonly accepted division between Asia and Europe ... is formed by the Ural Mountains, Ural River, Caspian Sea, Caucasus Mountains, and the Black Sea with its outlets, the Bosporus and Dardanelles." Europe covers approx. , or 2% of Earth#Surface, Earth's surface (6.8% of Earth's land area), making it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernest L
Ernest is a given name derived from the Germanic word ''ernst'', meaning "serious", often shortened to Ernie. Notable people and fictional characters with the name include: People * Archduke Ernest of Austria (1553–1595), son of Maximilian II, Holy Roman Emperor *Ernest, Margrave of Austria (1027–1075) * Ernest, Duke of Bavaria (1373–1438) * Ernest, Duke of Opava (c. 1415–1464) * Ernest, Margrave of Baden-Durlach (1482–1553) *Ernest, Landgrave of Hesse-Rheinfels (1623–1693) *Ernest Augustus, Elector of Brunswick-Lüneburg (1629–1698) * Ernest, Count of Stolberg-Ilsenburg (1650–1710) * Ernest Augustus, King of Hanover (1771–1851), son of King George III of Great Britain *Ernest II, Duke of Saxe-Coburg and Gotha (1818–1893), sovereign duke of the Duchy of Saxe-Coburg and Gotha *Ernest Augustus, Crown Prince of Hanover (1845–1923) *Ernest, Landgrave of Hesse-Philippsthal (1846–1925) *Ernest Augustus, Prince of Hanover (1914–1987) *Prince Ernst August o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swindon, Marlborough And Andover Railway
The Midland and South Western Junction Railway (M&SWJR) was an independent railway built to form a north–south link between the Midland Railway and the London and South Western Railway in England, allowing the Midland and other companies' trains to reach the port of Southampton. The M&SWJR was formed in 1884 from the amalgamation of the Swindon, Marlborough and Andover Railway and the Swindon and Cheltenham Extension Railway. The line was absorbed by the Great Western Railway at the 1923 grouping of the railways, and became part of British Railways on nationalisation in 1948. The railway closed to passengers in 1961, and to goods between 1964 and 1970. A small part of it has been reopened as the heritage Swindon and Cricklade Railway. First proposals By 1845 the Great Western Railway (GWR) had established itself as the dominant railway company controlling west to east trunk routes from Bristol and the West of England to London. The GWR was a broad gauge railway and it sou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Single Fairlie
A Fairlie locomotive is a type of articulated steam locomotive that has the driving wheels on bogies. It was invented by Robert Francis Fairlie. The locomotive may be double-ended (a double Fairlie) or single ended (a single Fairlie). Most double-ended Fairlies had wheel arrangements of or . All were tank locomotives. While Fairlie locomotives are now used only on heritage railways, the majority of diesel and electric locomotives in the world follow the basic form of the Fairlie — two power trucks with all axles driven. Many also follow the Fairlie's double-ended concept, capable of being driven equally well in both directions. Development of the design In 1864, the Scottish engineer Robert Francis Fairlie published a pamphlet detailing his plans for a new type of articulated locomotive. He had become convinced that the conventional pattern of locomotive could be improved on, and that his proposed design would have higher tractive effort as all the locomotive's weight ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North America
North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the south and west by the Pacific Ocean. The region includes Middle America (Americas), Middle America (comprising the Caribbean, Central America, and Mexico) and Northern America. North America covers an area of about , representing approximately 16.5% of Earth's land area and 4.8% of its total surface area. It is the third-largest continent by size after Asia and Africa, and the list of continents and continental subregions by population, fourth-largest continent by population after Asia, Africa, and Europe. , North America's population was estimated as over 592 million people in list of sovereign states and dependent territories in North America, 23 independent states, or about 7.5% of the world's popula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mason Bogie
Mason Bogie locomotives (also known as Mason Fairlie locomotives) are a type of articulated tank locomotive suited for sharp curves and uneven track, once commonly used on narrow-gauge railways in the United States. The design is a development of the Single Fairlie locomotive. Concept and development The American licensee of the Fairlie Patent steam locomotive was the firm of William Mason, located in Taunton, Massachusetts. Mason's first Fairlie locomotive was the ''Janus'', an Double Fairlie built in 1871. ''Janus'' was not commercially successful and was not repeated, so Mason experimented with a different design. In 1869, a Single Fairlie locomotive had been designed and constructed by Alexander McDonnell for the Great Southern and Western Railway in Ireland. This had a single boiler with one articulated, powered truck beneath it and a second, unpowered truck beneath the cab and bunker. Mason developed a set of standard plans based on this design with modified steam del ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otago Early Settlers Museum
Otago (, ; ) is a region of New Zealand located in the southern half of the South Island and administered by the Otago Regional Council. It has an area of approximately , making it the country's second largest local government region. Its population was The name "Otago" is the local southern Māori dialect pronunciation of " Ōtākou", the name of the Māori village near the entrance to Otago Harbour. The exact meaning of the term is disputed, with common translations being "isolated village" and "place of red earth", the latter referring to the reddish-ochre clay that is common in the area around Dunedin. "Otago" is also the old name of the European settlement on the harbour, established by the Weller Brothers in 1831, which lies close to Otakou. The upper harbour later became the focus of the Otago Association, an offshoot of the Free Church of Scotland, notable for its adoption of the principle that ordinary people, not the landowner, should choose the ministers. Major ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NZR E Class (1872)
The NZR E class of Double Fairlie steam locomotives were two different types of Fairlie steam locomotives, used on New Zealand's railway network. They were the first classes to take that designation, followed by the E class Mallet compound locomotive of 1906 and then the E class battery electric locomotive of 1922. The other Double Fairlie class was the B class, and there were also the Single Fairlie R and S classes. History In 1872, two locomotives were ordered by the Otago provincial government to operate trains on the newly built Dunedin and Port Chalmers Railway. It was the first line to be built to the new national gauge standard of , and had Robert F. Fairlie as its consulting engineer. He persuaded the railway to order locomotives to his Double Fairlie design. Built by the Vulcan Foundry in England, the locomotives were shipped to New Zealand in kit set form. Arriving at Port Chalmers in August, they were unloaded onto the wharf where they were assembled. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
