His design featured faster action and a tubing arrangement superior to the older Berlin valve design. The other significant development was an improved piston valve invented in 1838 or 1839 by brass instrument maker François Périnet of Paris. Although rotary valves are difficult to disassemble for maintenance, this type of valve was to become the standard design used on horns in Germany by the late nineteenth century. In this design the piston turned in the valve casing instead of moving vertically, allowing a very consistent bore. The second valve design which was widely used in Germany was the rotary valve, produced as early as 1824 by Nathan Adams (1783-1864) of Boston and patented in 1835 by Joseph Riedl in Vienna. In 1818 Heinrich Stölzel (1777 - 1844) and Friedrich Blühmel (1777 - 1845) were granted a patent in Germany for a piston valve horn. There's a lot written about the development of this invention, that occurred on different places, instrument makers copying and improving each others designs. Valves were invented in the early 19th century. 4.3.5 Some more anonymous tarv trumpets.4.3.3 Top action rotary valve makers in Europe.4.3 Löbner, Possegger, Jestädt, Lätsch, Votruba, Spada, Taylor.3.7 Rino workshop: Kurt Knoth and Johannes Scherzer, Markneukirchen.3.6 Felix Ellrich, Karl Marx Stadt, Germany.2.29 Christian Reisser, Ulm an der Donau, Germany.2.26 Philip Reichel, Markneukirchen, Germany.2.25 Reinhard Voigt, Markneukirchen, Germany.2.24 Johannnes Adler, Markneukirchen Germany.2.23 Herms-Niel-fanfare, Ernst Hess Nachf., Klingenthal, Germany.2.22 Alois Zmitko, Louny, Czechoslovakia.2.21 Alois Kotek, Chlumec nad Cidlinou, Czechoslovakia.2.20 Josef Dotzauer, Graslitz Czechoslovakia.2.18 Ant Janda, Hodonín, Czechoslovakia.2.16 Johan Sattler, Graslitz, Czechoslovakia.2.15 Josef Keilwerth, Graslitz, Czechoslovakia.2.14 Anton Riedl - Arigra, Graslitz, Czechoslovakia.2.13 Robert Oswald Adler, Markneukirchen, Germany.

2.12 C.A.Wunderlich, Siebenbrunn, Germany.

2.8 Bohland & Fuchs, Graslitz, Czechoslovakia.

2.6 F.X.Hüller, Graslitz Czechoslovakia.

2.5 V.F.Červený & S.(ynové), Hradec Králové, Czechoslovakia.

1.6 Isaac Fiske, Worcester, United States.

1.2 Nicolas-Paul Belorgey sr, Paris (France).

1.1 Carl August Müller, Mainz (Germany).

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