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Rotary Valve
A rotary valve (also called rotary-motion valve) is a type of valve in which the rotation of a passage or passages in a transverse plug regulates the flow of liquid or gas through the attached pipes. The common stopcock is the simplest form of rotary valve. Rotary valves have been applied in numerous applications, including: * Changing the pitch of brass instruments. * Controlling the steam and exhaust ports of steam engines, most notably in the Corliss steam engine. * Periodically reversing the flow of air and fuel across the open hearth furnace. * Loading sample on chromatography columns. * Certain types of two-stroke and four-stroke engines. * Most hydraulic automotive power steering control valves. Use in brass instruments In the context of brass instruments, rotary valves are found on horns, trumpets, trombones, flugelhorns, and tubas. The cornet derived from the posthorn, by applying rotary valves to it in the 1820s in France. An alternative to a rotary valve trumpet wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Itala Rotary Valve Cooling
Itala was a car manufacturer based in Turin, Italy, from 1904 to 1934, started by Matteo Ceirano and five partners in 1903. Ceirano family background The Ceirano brothers, Giovanni Battista, Giovanni, Ernesto and Matteo, were influential in the founding of the Italian auto industry, being variously responsible for: Ceirano; Welleyes (the technical basis of F.I.A.T.); Fratelli Ceirano; S.T.A.R. / Rapid ( Società Torinese Automobili Rapid); SCAT (Società Ceirano Automobili Torino); Itala and S.P.A. (Società Piemontese Automobili). Giovanni's son Giovanni "Ernesto" was also influential, co-founding Ceirano Fabbrica Automobili (aka Giovanni Ceirano Fabbrica Automobili) and Fabrica Anonima Torinese Automobili (FATA). In 1888, after eight years apprenticeship at his father's watch-making business, Giovanni Battista started building ''Welleyes'' bicycles, so named because English names had more sales appeal. In October 1898 Giovanni Battista and Matteo co-founded Ceirano ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Itala Rotary Valve Strokes
Itala was a car manufacturer based in Turin, Italy, from 1904 to 1934, started by Matteo Ceirano and five partners in 1903. Ceirano family background The Ceirano brothers, Giovanni Battista, Giovanni, Ernesto and Matteo, were influential in the founding of the Italian auto industry, being variously responsible for: Ceirano; Welleyes (the technical basis of F.I.A.T.); Fratelli Ceirano; S.T.A.R. / Rapid ( Società Torinese Automobili Rapid); SCAT (Società Ceirano Automobili Torino); Itala and S.P.A. (Società Piemontese Automobili). Giovanni's son Giovanni "Ernesto" was also influential, co-founding Ceirano Fabbrica Automobili (aka Giovanni Ceirano Fabbrica Automobili) and Fabrica Anonima Torinese Automobili (FATA). In 1888, after eight years apprenticeship at his father's watch-making business, Giovanni Battista started building ''Welleyes'' bicycles, so named because English names had more sales appeal. In October 1898 Giovanni Battista and Matteo co-founded Ceirano ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brass Instrument Rotary Valve Diagram
Brass is an alloy of copper (Cu) and zinc (Zn), in proportions which can be varied to achieve different mechanical, electrical, and chemical properties. It is a substitutional alloy: atoms of the two constituents may replace each other within the same crystal structure. Brass is similar to bronze, another copper alloy, that uses tin instead of zinc. Both bronze and brass may include small proportions of a range of other elements including arsenic (As), lead (Pb), phosphorus (P), aluminium (Al), manganese (Mn), and silicon (Si). Historically, the distinction between the two alloys has been less consistent and clear, and modern practice in museums and archaeology increasingly avoids both terms for historical objects in favor of the more general "copper alloy". Brass has long been a popular material for decoration due to its bright, gold-like appearance; being used for drawer pulls and doorknobs. It has also been widely used to make utensils because of its low melting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trombone
The trombone (german: Posaune, Italian, French: ''trombone'') is a musical instrument in the brass family. As with all brass instruments, sound is produced when the player's vibrating lips cause the air column inside the instrument to vibrate. Nearly all trombones use a telescoping slide mechanism to alter the pitch instead of the valves used by other brass instruments. The valve trombone is an exception, using three valves similar to those on a trumpet, and the superbone has valves and a slide. The word "trombone" derives from Italian ''tromba'' (trumpet) and ''-one'' (a suffix meaning "large"), so the name means "large trumpet". The trombone has a predominantly cylindrical bore like the trumpet, in contrast to the more conical brass instruments like the cornet, the euphonium, and the French horn. The most frequently encountered trombones are the tenor trombone and bass trombone. These are treated as non-transposing instruments, reading at concert pitch in bass clef, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engine Knocking
In spark ignition internal combustion engines, knocking (also knock, detonation, spark knock, pinging or pinking) occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front. The fuel-air charge is meant to be ignited by the spark plug only, and at a precise point in the piston's stroke. Knock occurs when the peak of the combustion process no longer occurs at the optimum moment for the four-stroke cycle. The shock wave creates the characteristic metallic "pinging" sound, and cylinder pressure increases dramatically. Effects of engine knocking range from inconsequential to completely destructive. Knocking should not be confused with pre-ignition—they are two separate events. However, pre-ignition can be followed by knocking. The phenomenon of detonation was described in November 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Darracq Rotary-valve Engine Animation
A Darracq and Company Limited owned a French manufacturer of motor vehicles and aero engines in Suresnes, near Paris. The French enterprise, known at first as A. Darracq et Cie, was founded in 1896 by Alexandre Darracq after he sold his Gladiator Bicycle business. In 1902, it took effect in 1903, he sold his new business to a privately held English company named A Darracq and Company Limited, taking a substantial shareholding and a directorship himself. Alexandre Darracq continued to run the business from Paris but was obliged to retire to the Côte d'Azur in 1913 following years of difficulties that brought Darracq & Co into very hazardous financial circumstances. He had introduced an unproven unorthodox engine in 1911 which proved a complete failure yet he neglected Suresnes' popular conventional products. France then entered the first World War. He died in 1931 but long before that, in 1920, the name of A Darracq & Co 1905 was changed to STD Motors Limited. Then, in 1922, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yamaha Contrabass Tuba YBB-641
Yamaha may refer to: * Yamaha Corporation, a Japanese company with a wide range of products and services, established in 1887. The company is the largest shareholder of Yamaha Motor Company (below). ** Yamaha Music Foundation, an organization established by the authority of Japanese Ministry of Education for the purpose of promoting music education and music popularization ** Yamaha Pro Audio, a Japanese company specializing in products for the professional audio market * Yamaha Motor Company, a Japanese motorized vehicle-producing company. The company was established in 1955 upon separation from Yamaha Corporation (above), and is currently one of the major shareholders of Yamaha Corporation (See: Cross ownership). ** Yamaha Júbilo, a Japanese rugby team ** Yamaha Stadium is a football stadium located in Iwata City, Shizuoka Prefecture, Japan, owned by Yamaha Motors, next to whose plant it is located, and was purpose-designed for use with soccer and rugby union. It is the h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arizona State University
Arizona State University (Arizona State or ASU) is a public research university in the Phoenix metropolitan area. Founded in 1885 by the 13th Arizona Territorial Legislature, ASU is one of the largest public universities by enrollment in the U.S. One of three universities governed by the Arizona Board of Regents, ASU is a member of the Universities Research Association and classified among "R1: Doctoral Universities – Very High Research Activity". ASU has nearly 150,000 students attending classes, with more than 38,000 students attending online, and 90,000 undergraduates and nearly 20,000 postgraduates across its five campuses and four regional learning centers throughout Arizona. ASU offers 350 degree options from its 17 colleges and more than 170 cross-discipline centers and institutes for undergraduates students, as well as more than 400 graduate degree and certificate programs. The Arizona State Sun Devils compete in 26 varsity-level sports in the NCAA Division I Pac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hagmann Valve
The Hagmann Free-Flow Valve is a trademarked brass instrument valve design developed by Swiss musician and instrument technician René Hagmann, first introduced for trombone F attachments in 1990. His intention was to address some of the geometrical limitations of the regular rotary valve, as well as the reliability and maintenance issues of the popular Thayer axial flow valve that arise from its relatively complex design. A standard rotary valve turns the air flow as much as 90 degrees when it is engaged. This does not substantially affect the sound of instruments like the French Horn which already have many turns in the air flow, but part of the characteristic sound of the trombone comes from its long, straight air flow. The angles on a Hagmann valve are dramatically less (60 to 66 degrees) which makes it much easier for the player to maintain proper tone with the valve engaged. While the Hagmann Valve does not achieve as low an angle as the Thayer Valve (which can be as low as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Axial Flow Valve
The axial flow valve, or Thayer valve, is a brass instrument valve design for trombone F attachments, patented in 1978 by Orla Ed Thayer. Designed with assistance from Zigmant Kanstul to replace the traditional rotary valve, it was a revolution in trombone valve and instrument design. Combined with open-wrap tubing, it eliminates the impedance caused by tight tubing bends, improving the airflow through the instrument and the open "feel" perceived by the player. Problem When engaged, a rotary valve deflects the air flow through extra valve tubing, using tight, small radius bends of at least 90° angles, leading to a stuffy response and audible tone colour changes, compared to the "open" instrument. These drawbacks are especially noticeable on the trombone, since its characteristic timbre results directly from its cylindrical bore and almost completely straight construction. Valve tubing aside, there are only two bends, one each in the slide and bell section. In contrast, the dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
F Attachment
The trombone (german: Posaune, Italian, French: ''trombone'') is a musical instrument in the brass family. As with all brass instruments, sound is produced when the player's vibrating lips cause the air column inside the instrument to vibrate. Nearly all trombones use a telescoping slide mechanism to alter the pitch instead of the valves used by other brass instruments. The valve trombone is an exception, using three valves similar to those on a trumpet, and the superbone has valves and a slide. The word "trombone" derives from Italian ''tromba'' (trumpet) and ''-one'' (a suffix meaning "large"), so the name means "large trumpet". The trombone has a predominantly cylindrical bore like the trumpet, in contrast to the more conical brass instruments like the cornet, the euphonium, and the French horn. The most frequently encountered trombones are the tenor trombone and bass trombone. These are treated as non-transposing instruments, reading at concert pitch in bass clef, wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 many brass instruments * The valves used in pneumatic cannons * The valves used in many stationary steam engines and steam locomotives Brass instruments Cylindrical piston valves called Périnet valves (after their inventor François Périnet) are used to change the length of tube in the playing of most brass instruments, particularly the trumpet-like members of the family (cornet, flugelhorn, saxhorn, etc.). Other brass instruments use rotary valves, notably the orchestral horns and many tuba models, but also a number of rotary-valved variants of those brass instruments which more commonly employ piston valves. The first piston-valved musical instruments were developed just after the start of the 19th century. The Stölzel valve (invented by Heinrich Stölzel in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
