Karl Rehfuss, the chief-engineer and leading foremaster of Johannes Hakenmüller. Born in 21th of august 1863 in Tailfingen/Württemberg,/South-Western-Germany , he lived just beside the quarter of the enterprise. After his apprenticeship at the at that time leading producers of textile-machines, Terrot in Bad Canstatt and Fouquet & Frautz in Rottenburg he he was employed at J. Hakenmüller from 1th of february 1888 til 1941, long over his pensioning. With his portrait and to his honor the management in 1943 ordered a painting of the artist Kies.