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. It is sometimes referred to as the… … Wikipedia
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… … Wikipedia
Valve timing — In a piston engine, the valve timing is the precise timing of the opening and closing of the valves.In four stroke cycle engines and some two stroke cycle engines, the valve timing is controlled by the camshaft. It can be varied by modifying the… … Wikipedia
Arturo Caprotti — (22 March 1881 – 9 February 1938) was an Italian engineer and architect. In 1915 or 1916 he invented the Caprotti valve gear rotary cam poppet valve gear for steam engines of all kinds, but in practice it was employed almost exclusively in… … Wikipedia
Piston valve — A piston valve is a device used to control the motion of a fluid along a tube or pipe by means of the linear motion of a piston within a chamber or cylinder.Examples of piston valves are: * The valves used in the valve gear of many stationary… … Wikipedia
Poppet valve — A poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. The shaft guides the plug portion by sliding through a valve guide. In most… … Wikipedia
Arturo Caprotti — Gedenktafel an Caprottis Geburtshaus Arturo Caprotti (* 22. März 1881 in Moscazzano; † 10. Februar 1938 in Mailand) war ein italienischer Ingenieur. Inhaltsverzeichnis … Deutsch Wikipedia
Double beat valve — The double beat valve, drop valve or equilibrium valve is a type of poppet valve arranged to allow it to be opened against a high pressure with a minimum of force. One of its uses is in steam engines to admit steam to the cylinders and to release … Wikipedia
BR Standard Class 8 — Infobox Locomotive powertype=Steam name = BR Standard Class 8 caption = 71000 Duke of Gloucester as preserved. Note the Caprotti valve gear. designer = Robert Riddles builder = BR Crewe Works builddate = 1954 totalproduction = 1 whytetype = 4 6 2 … Wikipedia
LMS Stanier Class 5 4-6-0 44686/7 — The last two of the 842 LMS Stanier Black Fives, numbers 44686 and 44687 were constructed by British Railways at Horwich Works in 1951. Overview 44686 and 44687 differed from other members of the class in a number of respects. They, like 1948… … Wikipedia
