Huguenin et Ducommun
Huguenin & Ducommun of Mulhouse, France.
See also Ducommun.
Machine tool makers.
At present this entry includes successor companies.
Machines for engraving printing rollers described 
Huguenin one-colour cloth printing machine described and illustrated
Later became Ducommun & Dubied, then Heilmann-Ducommun, and then Heilmann-Ducommun & Steinlen.
1839 Huguenin et Ducommun won a bronze medal for their machine for engraving copper printing rollers.
Steinlen was Vincent Steinlen (Born 13 May 1824 in Vevey, Switzerland, died 29 Oct 1902, aged 78, in Mulhouse). He became chief engineer at Ducommun & Cie at Mulhouse. The company was founded in 1834 by Huguenin-Cornetz and Jules Ducommun. In 1873, the firm became the Société Ducommun-Heilmann & Steinlen.. Huguenin-Cornetz appears to have been Auguste Huguenin-Cornetz.
Planing Machine in Deutsches Museum
See photos. The machine is said to date from 1840. The table is moved back and forth by a crank whose stroke is adjustable on the bevel gear. There is no fast return mechanism. The bevel gear is driven by the shaft seen under the bed. The shaft is driven by a belt - note the fast and loose pulleys and the belt shifting device. Part of the feed mechanism for incrementally traversing the tool can be seen beneath the table.
The museum credits Jacques Huguenin as the maker.
Sources of Information
-  Publication Industrielle des Machines Outils et Appareils, 1842, p.96ff.
-  'Chemistry Theoretical, Practical and Analytical, as Applied and Relating to the Arts & Manufactures' Vol 1, pp.694-5, by Dr. Sheridan Muspratt, 1860
-  Rapport du Jury Central sur les Produits de l'industrie Francaise, Volume 1839, Issue 2
-  Cimetière de Mulhouse, Vincent Steinlen