 Akroyd-Stuart's engines were built from 26 June 1891 by Richard Hornsby & Sons in Grantham, a large manufacturer of steam engines and agricultural equipment, as the "Hornsby Akroyd Patent Oil Engine" under licence and were first sold commercially on 8 July 1892.Other engineering companies had been offered the option of manufacturing the engine, but they saw it as a threat to their business, and so declined the offer.In 1892, T.H.