The photograph shows a stationary engine that powered various agricultural equipment (threshing machines, saws, chaff cutters, etc.). Stationary engines were used as sources of power because electricity was only gradually being distributed. Jan Králík
Because even the firebox of a steam engine is not visible, it could also have been an early liquid-fuel engine (the vertical pipe could have been the exhaust).
Vladimír Olšanský
It is a horizontal single-cylinder two-stroke compression-ignition engine with a hot-bulb head. The manufacturer will be difficult to determine from the photographs because the engine is photographed from the rear. I also found that at least three companies manufactured this design, apparently under the same patent (Brněnská královopolská strojírna, SUCHÝ Čtyřkoly, and Jan Vytlačil of Osík near Litomyšl). Vít Pešák
With reference to the photo ID desky/deska7112, the engine should be an hot bulb “Jan Vytlacil”, type Climax, made in Litomysle near Osik (CZ): it’s the Czech copy of the older “August Mietz & Carl Weiss” made in Mott Street, New York city (USA).andrea piacentin
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