Elsässische Maschinenbau-Gesellschaft Grafenstaden

After losing the Franco-Prussian war of 1870/71, France had to withdraw from the so-called Reichsland and cede it to the German Empire.

As a result, the company, now called the Elsässische Maschinenbaugesellschaft Andreas Köchlin & Cie. in Mülhausen and the Maschinenwerkstätte Rollé & Schwillgué in Strassburg-Grafenstaden found themselves inside the German Empire.

The scale-making factory of "Rollé & Schwillgué", that predominantly made decimal weighing equipment based on the 1821 patent of a Benedictine monk, was bought in 1837 by the Strasbourg engineering company, which transferred the workshop with its work force of 40 employees one year later to Grafenstaden, a few kilometres south of Strasbourg.

After the takeover of Alsace-Lorraine by the German Empire in 1871, many Alsatians who considered themselves to be Frenchmen moved to the area around Belfort where, in 1872, the Société Alsacienne de Constructions Mécaniques (Alsatian Mechanical Engineering Company), SACM, was opened.

Because eleven works numbers were not used, the combined company SACM must have built 6,042 steam locomotives.