- Sabine K. Klaus
(b Floridsdorf, Austria, before 1800; d Vienna, c1845). Austrian brass instrument maker. In 1818, he applied to transfer his workshop from the suburb Floridsdorf to the city of Vienna, where his workshop is recorded from 1819–22 in Leimgrube, Hauptstraße; in 1823 in Mariahilferstraße; and from 1831–44 in the city centre in Rothenthurm-Straße; in 1833 he lived at Leopoldstadt no.6.
Named Waldhornmacher in his application to open a workshop in Vienna, Riedl made a wide array of instruments, including french horns, keyed trumpets, post horns, and trombones. In an advertisement in the Wiener Zeitung of 7 May 1829, he offered a newly invented Baßbombardone with 12 keys or with valves. In 1833, he received an Austrian patent (no.1558) for two years for improvements of the Bass-Pumpathon (bass bombardon), in which the keys were replaced with three or four Vienna valves with slides. According to the patent description, this instrument had a wide bore, a strong tone, and reached down to ...