Stapfer de Duclos
Ateliers de constructions Stapfer de Duclos et cie of Boulevard Maritime 42, Marseilles
Makers of stationary and marine steam engines and boilers, condensers, steam capstans ship's steering gear (Farcot-Duclos servomotors)
1865 Founded by Emile Duclos.
1874 Daniel Stapfer became manager.[1]
A 1/4 scale model of steam steering gear, made in 1882, is on display at the Musee des Arts et Metiers. Inv. No. 09910.
Description and drawing of steam steering gear (serve-moteur) here.
A 1920s example of Stapfer de Duclos steering gear is on display at the Rahmi M. Koç Museum in Istanbul [2]