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Walschaerts valve gear, the Glossary

Index 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 Belgian railway engineer Egide Walschaerts in 1844.[1]

Table of Contents

  1. 42 relations: Articulated locomotive, Avonside Engine Company, Bagnall–Price valve gear, Baguley valve gear, Baker valve gear, Belgium, BR Standard Class 5 73096, Connecting rod, Coupling rod, Edmund Heusinger von Waldegg, Egide Walschaerts, Ernest L. Ahrons, Europe, Fairlie locomotive, Germany, HathiTrust, Internet Archive, James Thompson Marshall, Kuhn slide, Live steam, Locomotive frame, Mason Bogie locomotive, Mechanical engineering, Midland and South Western Junction Railway, New Zealand Railways Department, North America, NZR B class (1874), NZR E class (1872), Patent, Pennsylvania Railroad E6 class, Piston valve (steam engine), Reversing gear, Steam locomotive, Steam locomotive components, Stephenson valve gear, Surface condenser, Thermal efficiency, Toitū Otago Settlers Museum, Valve gear, Vienna, Wellington, 3 ft 6 in gauge railways.

  2. Locomotive valve gear

Articulated locomotive

An articulated locomotive is a steam locomotive (rarely, an electric locomotive) with one or more engine units that can move independently of the main frame.

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Avonside Engine Company

The Avonside Engine Company was a locomotive manufacturer in Avon Street, St. Philip's, Bristol, England between 1864 and 1934.

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Bagnall–Price valve gear

Bagnall–Price valve gear is a type of steam engine valve gear developed at locomotive manufacturer W.G. Bagnall as an alternative to the more common Walschaerts valve gear and also to supersede the Baguley valve gear their designs had previously utilised. Walschaerts valve gear and Bagnall–Price valve gear are locomotive valve gear.

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Baguley valve gear

The Baguley valve gear is a type of steam engine valve gear invented by Ernest E. Baguley, the Chief Draughtsman of the W.G. Bagnall company of locomotive manufacturers and patented in 1893. Walschaerts valve gear and Baguley valve gear are locomotive valve gear.

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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. Walschaerts valve gear and Baker valve gear are locomotive valve gear.

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Belgium

Belgium, officially the Kingdom of Belgium, is a country in Northwestern Europe.

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BR Standard Class 5 73096

British Railways Standard Class 5 No.

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Connecting rod

A connecting rod, also called a 'con rod', is the part of a piston engine which connects the piston to the crankshaft.

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Coupling rod

A coupling rod or side rod connects the driving wheels of a locomotive.

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Edmund Heusinger von Waldegg

Edmund Heusinger von Waldegg (12 May 1817 – 2 February 1886) was a German mechanical engineer and railway engineer.

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Egide Walschaerts

Egide Walschaerts (21 January 1820 – 18 February 1901) was a Belgian mechanical engineer, best known as the inventor of the Walschaerts valve gear used in steam locomotives.

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Ernest L. Ahrons

Ernest Leopold Ahrons (12 February 1866 – 30 March 1926) was a British engineer and author.

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Europe

Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere.

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Fairlie locomotive

A Fairlie locomotive is a type of articulated steam locomotive that has the driving wheels on bogies.

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Germany

Germany, officially the Federal Republic of Germany (FRG), is a country in Central Europe.

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HathiTrust

HathiTrust Digital Library is a large-scale collaborative repository of digital content from research libraries including content digitized via Google Books and the Internet Archive digitization initiatives, as well as content digitized locally by libraries.

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Internet Archive

The Internet Archive is an American nonprofit digital library founded in 1996 by Brewster Kahle.

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James Thompson Marshall

James Thompson Marshall (1854, Glanford Brigg, Lincolnshire - 1931, Knaresborough, Yorkshire) was an English railway and mechanical engineer known for inventing the 'Marshall valve gear' for steam locomotive use.

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Kuhn slide

The Kuhn slide is part of a modified Walschaerts (German: ''Heusinger'') valve gear on steam locomotives and is named after its inventor, Michael Kuhn (1851–1903). Walschaerts valve gear and Kuhn slide are locomotive valve gear.

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Live steam

Live steam is steam under pressure, obtained by heating water in a boiler.

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Locomotive frame

A locomotive frame is the structure that forms the backbone of the railway locomotive, giving it strength and supporting the superstructure elements such as a cab, boiler or bodywork.

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Mason Bogie locomotive

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.

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Mechanical engineering

Mechanical engineering is the study of physical machines that may involve force and movement.

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Midland and South Western Junction 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.

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New Zealand Railways Department

The New Zealand Railways Department, NZR or NZGR (New Zealand Government Railways) and often known as the "Railways", was a government department charged with owning and maintaining New Zealand's railway infrastructure and operating the railway system.

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North America

North America is a continent in the Northern and Western Hemispheres.

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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).

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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.

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Patent

A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an enabling disclosure of the invention.

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Pennsylvania Railroad E6 class

Class E6 on the Pennsylvania Railroad was the final type of 4-4-2 "Atlantic" locomotive built by the railroad, and second only to the Milwaukee Road's streamlined class A in size, speed and power.

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Piston valve (steam engine)

Piston valves are one form of valve used to control the flow of steam within a steam engine or locomotive. Walschaerts valve gear and Piston valve (steam engine) are locomotive valve gear.

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Reversing gear

On a steam locomotive, the reversing gear is used to control the direction of travel of the locomotive.

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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.

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Steam locomotive components

Main components found on a typical steam locomotive include: The diagram, which is not to scale, is a composite of various designs in the late steam era.

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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. Walschaerts valve gear and Stephenson valve gear are locomotive valve gear.

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Surface condenser

A surface condenser is a water-cooled shell and tube heat exchanger installed to condense exhaust steam from a steam turbine in thermal power stations.

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Thermal efficiency

In thermodynamics, the thermal efficiency (\eta_) is a dimensionless performance measure of a device that uses thermal energy, such as an internal combustion engine, steam turbine, steam engine, boiler, furnace, refrigerator, ACs etc.

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Toitū Otago Settlers Museum

The Toitū Otago Settlers Museum is a regional history museum in Dunedin, New Zealand.

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Valve gear

The valve gear of a steam engine is the mechanism that operates the inlet and exhaust valves to admit steam into the cylinder and allow exhaust steam to escape, respectively, at the correct points in the cycle. Walschaerts valve gear and valve gear are locomotive valve gear.

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Vienna

Vienna (Wien; Austro-Bavarian) is the capital, most populous city, and one of nine federal states of Austria.

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Wellington

Wellington is the capital city of New Zealand.

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3 ft 6 in gauge railways

Railways with a track gauge of were first constructed as horse-drawn wagonways.

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See also

Locomotive valve gear

References

[1] https://en.wikipedia.org/wiki/Walschaerts_valve_gear

Also known as Heusinger valve gear, Walschaert, Walschaert gear, Walschaert valve gear, Walschaert's valve gear, Walschaerts, Walschaerts valvegear, Walschart valve gear.