Christian Friedrich Sattler

Christian Friedrich Sattler (1778–1842)^[1] was a brass instrument maker and inventor in Leipzig, Germany. In 1821, Sattler became renowned for two inventions: the chromatic valve trumpet which applied three valves to the natural trumpet to provide a fully chromatic range for the first time, and the Tenorbaßposaune (lit. 'tenor-bass trombone').^[2] A tenor trombone in B♭ with the larger bore and mouthpiece of a bass trombone in F, he improved it further in 1839 by inventing the quartventil (lit. 'fourth valve'), a valve attachment to lower the instrument a fourth into F to provide the lower range available to the bass trombone.^[3]: 29 In Sattler's workshop in the Querstraße in Leipzig he built "signal horns and chromatic valve horns", new inventions at the time. He also built his own design of trombones with a wider bell flare and larger bore, that were widely adopted by players and other instrument makers, notably Czech maker Červený.^[4]: 69 Today, they are still known as "Leipzig model" or "German" trombones.^[2]