After the end of the First World War, two engineers, Fäsch and De Saugy, developed a prototype rotary motor-cultivator ("Bodenfräse" in German) at the "La Précision" factory in Geneva, Switzerland, which had previously produced armaments. Based around Konrad von Meyenburg's patents, this three-wheeled machine was fitted with a 25 hp four-cylinder Rochet-Schneider engine and featured a two-metre wide cultivator at the rear. Only a small number seem to have been built before the focus shifted to a smaller walk-behind cultivator. The company's name was subsequently changed to Société Industrielle de Machines Agricoles Rotatives (SIMAR) and it continued to develop various models of horticultural tractor until 1978, by which time more than 50,000 machines had been produced.

(Click on images below to enlarge)

SIMAR 25 hp rotary motor-cultivator (serial no. 5) photographed in a private collection in the UK in 2013. This is believed to be the only SIMAR of this model to have been imported into the UK, and it took part in the tractor trials at Dalkeith, Scotland in 1922 (along with a smaller 6-8 hp model). The rotary cultivator attachment is no longer present.


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