Brass instrument valves are valves used to change the length of tubing of a brass instrument allowing the player to reach the notes of various harmonic series. Each valve pressed diverts the air stream through additional tubing, individually or in conjunction with other valves. This lengthens the vibrating air column thus lowering the fundamental tone and associated harmonic series produced by the instrument. Valves in brass instruments require regular maintenance and lubrication to ensure fast and reliable movement.
The first musical instruments with piston valves were developed just after the start of the 19th century.
The first of these types was the Stölzel valve, bearing the name of its inventor Heinrich Stölzel, who first applied these valves to the French horn in 1814. Until that point, there had been no successful valve design, and horn players had to stop off the bell of the instrument, greatly compromising tone quality to achieve a partial chromatic scale. [1]
In a Stölzel valve, the air enters through the bottom of the valve casing, up through the hollow bottom end of the piston, and through a port to the valve loop. The air is then led through an oblique port in the piston to a short tube connecting the valves where it is then directed through the second valve and out the bottom. This type of valve, however, had inherent problems. It forced the air to double back on itself and the 90 degree turns disrupted the bore, causing significant undesired back-pressure. These problems were improved upon later by the double-piston valve. [2]
The double-piston valve, also called the Vienna valve or pumpenvalve, is a type of valve that preceded the modern single piston Périnet valve. It was first produced in a trumpet in 1821 by Christian Friedrich Sattler of Leipzig. [3] In this valve type, the simultaneous movement of two pistons bends the air flow in two right angles to introduce an additional valve loop. These turns cause constrictions in the bore, that make the instrument harder to play. At first, the two pistons were operated by a lever connected with braces, but the later Vienna model of these valves was operated by long rods connecting the pistons to spring-loaded keys on the other side of the instrument.
While they have fallen out of favor compared to modern valves in almost all places, they are often called "Vienna valves" because they are still used almost exclusively in Vienna, Austria, where players prefer the smooth legato and natural horn–like timbre. The Vienna system was in common use in Germany on many brass instruments including trumpets up to 1850, and as Système Belge on valve trombones in Belgium into the early 20th Century.
The modern piston valve found in the majority of valved brass instruments today was invented by François Périnet in 1838 and patented in 1839. They are sometimes called Périnet valves after the inventor. [4] They work by diverting air obliquely through ports in the stock of the valve, so that a loop of tubing is included in the air stream, thus lowering the pitch. The stock of the valve is cylindrical and moves up and down through a larger cylindrical casing.
A small Périnet valve integrated into a trombone mouthpiece, perpendicular to the shank in order to change the throat diameter to facilitate the upper register, was patented by Charles E. Stacy in 1924. [5] [6]
Adolph Sax invented instruments with six independent piston valves (three for each hand), but only the most dexterous musicians were able to play them. The long lengths of extra tubing used by each of the six valves also made the instruments heavy and cumbersome to play. [7]
Modern valve brass instruments not using either rotary or Vienna valves use this type of valve in a set of three configured to lower the instrument by two, one, and three half-steps respectively, which in combination lower the instrument pitch by up to a tritone. Some instruments (e.g. the tuba and euphonium) add a fourth valve that further lowers the pitch by a perfect fourth.
German musician and inventor Joseph Riedlin is credited with the first use of rotary valves on brass instruments in 1832. [2] The rotary valve works using a short circular rotor (also known as a stock, or "plug") housed in a larger cylindrical valve casing, and rotating on a spindle. Elbow-shaped ports or "knuckles" in the rotor direct the airflow into an extra length of valve tubing when the rotor is rotated 90° and thus lowering the pitch. The ports can be cut or drilled from a rotor made from a solid piece of brass, or sometimes they can be short pieces of tubing brazed into an assembled or cast rotor.
Many other innovations in traditional rotary valve design and manufacture have taken place since the late 20th century to improve their resistance and other playing characteristics. Willson Rotax and CAIDEX valves and Greenhoe valves use vents between the ports to allow air to escape through the rotor as the rotor switches positions. This eliminates the "pop" heard or felt with a traditional rotary valve. Other designs use a larger diameter rotor to accommodate port tubing with a circular or constant-area cross-section, which helps with perceived "stuffiness" of valves; earlier designs used narrow elliptical tubes to fit into a smaller diameter rotor. German maker Meinlschmidt have patented an "Open Flow" rotor with self-lubricating spiral channels in the rotor spindle and open, circular ports. [8]
Horns almost always have rotary valves, and they are found on most orchestral F and CC tubas and cimbassos. In most European orchestras, particularly in Germany, they are also used for trumpets, bass trumpets, and Wagner tubas.
Trombone F attachment valves are usually rotary, although the desire to maintain "openness" through the valve section by eliminating 90° bends in the valve and tubing has led to many radical valve designs since the 1970s, such as the Thayer axial flow valve and Hagmann valve.
Axial flow valves are an alternative for the traditional rotary valve found on trombones with valve attachments. Patented by Orla Ed Thayer in 1978, it uses a conical rotor with the spindle axis parallel to the tubing, and deflecting the direction of the airflow by only 28° or less. Several subsequent patents attempted to address its reliability and leakage problems using spring tensioners and lighter rotor materials, and a 2011 patent greatly improved the action, stability and reliability of the valve by mounting bearings at both ends of the rotor spindle. [9] Vincent Bach use this design for their "Infinity Valve" on their "AF" trombones, replacing the older Thayer design on their now discontinued "T" designation trombones. [10]
Several other designs of rotary valve have arisen from attempts to create air paths through the valve that avoid the tight kinks in the tubing caused by the traditional rotor ports. In the most widely adopted of these, the Hagmann valve, the rotor has three ports: one straight through, and two when the valve is engaged, which bend only 45° and arise through the top of the valve casing, instead of through the rotor plane. The S.E. Shires "Tru-Bore" valve is similar but uses a completely straight path in the default position, as well as simpler manufacturing and improved reliability. [11] Earlier three-port valve designs, such as the Miller valve and the Selmer "K" valve, use a taller cylinder to deflect the air though two S-shaped knuckles, rather than emerging through the top of the valve casing. [12]
A brass instrument is a musical instrument that produces sound by sympathetic vibration of air in a tubular resonator in sympathy with the vibration of the player's lips. Brass instruments are also called labrosones or labrophones, from Latin and Greek elements meaning 'lip' and 'sound'.
The cornet is a brass instrument similar to the trumpet but distinguished from it by its conical bore, more compact shape, and mellower tone quality. The most common cornet is a transposing instrument in B♭. There is also a soprano cornet in E♭ and cornets in A and C. All are unrelated to the Renaissance and early Baroque cornett.
The French horn is a brass instrument made of tubing wrapped into a coil with a flared bell. The double horn in F/B♭ is the horn most often used by players in professional orchestras and bands, although the descant and triple horn have become increasingly popular. A musician who plays a horn is known as a horn player or hornist.
The 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 trumpet is a brass instrument commonly used in classical and jazz ensembles. The trumpet group ranges from the piccolo trumpet—with the highest register in the brass family—to the bass trumpet, pitched one octave below the standard B♭ or C trumpet.
The tuba is the largest and lowest-pitched musical instrument in the brass family. As with all brass instruments, the sound is produced by lip vibration – a buzz – into a mouthpiece. It first appeared in the mid-19th century, making it one of the newer instruments in the modern orchestra and concert band, and largely replaced the ophicleide. Tuba is Latin for "trumpet".
The bass trumpet is a type of low trumpet which was first developed during the 1820s in Germany. It is usually pitched in 8' C or 9' B♭ today, but is sometimes built in E♭ and is treated as a transposing instrument sounding either an octave, a sixth or a ninth lower than written, depending on the pitch of the instrument. Having valves and the same tubing length, the bass trumpet is quite similar to the valve trombone, although the bass trumpet has a harder, more metallic tone. Certain modern manufacturers that sell 'valve trombones' and 'bass trumpets' employ the same tubing, valves, and bell in different combinations; in these circumstances, the bass trumpet is nearly similar to the valve trombone.
The mellophone is a brass instrument used in marching bands and drum and bugle corps in place of French horns. It is a middle-voiced instrument, typically pitched in the key of F, though models in E♭, D, C, and G have also historically existed. It has a conical bore, like that of the euphonium and flugelhorn. It can also be used to play French horn parts in concert bands and orchestras.
The valve trombone is a brass instrument in the trombone family that has a set of valves to vary the pitch instead of a slide. Although it has been built in sizes from alto to contrabass, it is the tenor valve trombone pitched in B♭ an octave lower than the trumpet which has seen the most widespread use. The most common models have three piston valves. They are found in jazz and popular music, as well as marching bands in Europe, where they are often built with rotary valves and were widely used in orchestras in the 19th century.
A piston valve is a device used to control the motion of a fluid or gas along a tube or pipe by means of the linear motion of a piston within a chamber or cylinder.
A rotary 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:
The axial flow valve, or Thayer valve, is a brass instrument valve design patented in 1978 by Orla Ed Thayer. Designed with assistance from Zigmant Kanstul, it was originally intended to replace the traditional rotary valve on the French horn, but instead revolutionized the design of trombone valve attachments. 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.
A crook, also sometimes called a shank, is an exchangeable segment of tubing in a natural horn which is used to change the length of the pipe, altering the fundamental pitch and harmonic series which the instrument can sound, and thus the key in which it plays.
Marching brass instruments are brass instruments specially designed to be played while moving. Most instruments do not have a marching version - only the following have marching versions:
The Vienna horn is a type of musical horn used primarily in Vienna, Austria, for playing orchestral or classical music. It is used throughout Vienna, including the Vienna Philharmonic and Wiener Staatsoper.
Heinrich David Stölzel was a German horn player who developed some of the first valves for brass instruments. He developed the first valve for a brass musical instrument, the Stölzel valve, in 1818, and went on to develop various other designs, some jointly with other inventor musicians.
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 horn is any of a family of musical instruments made of a tube, usually made of metal and often curved in various ways, with one narrow end into which the musician blows, and a wide end from which sound emerges. In horns, unlike some other brass instruments such as the trumpet, the bore gradually increases in width through most of its length—that is to say, it is conical rather than cylindrical. In jazz and popular-music contexts, the word may be used loosely to refer to any wind instrument, and a section of brass or woodwind instruments, or a mixture of the two, is called a horn section in these contexts.
The German horn is a brass instrument made of tubing wrapped into a coil with a flared bell, and in bands and orchestras is the most widely used of three types of horn, the other two being the French horn and the Vienna horn. Its use among professional players has become so universal that it is only in France and Vienna that any other kind of horn is used today. A musician who plays the German horn is called a horn player. The word "German" is used only to distinguish this instrument from the now-rare French and Viennese instruments. Although the expression "French horn" is still used colloquially in English for any orchestral horn, since the 1930s professional musicians and scholars have generally avoided this term in favour of just "horn". Vienna horns today are played only in Vienna, and are made only by Austrian firms. German horns, by contrast, are not all made by German manufacturers, nor are all French-style instruments made in France.
Étienne-François Périnet was a French instrument maker, best known for his development of an early piston valve system for brass instruments.