This hammermill was manufactured by Doll et Cie in Germany around 1900 to 1920. It was intended to be powered by a steam engine. When powered, the windmill turns, which results in the metal hammers moving up and down through a pulley system that is connected to the windmill. The structure is made of pressed steel.
Ralph L. Tomlinson Toy Collection, "Learning Through Play" Exhibit in Leatherby Library
Chapman University, Leatherby Library, Ralph L. Tomlinson, toys, antique, antiques