Who was the English inventor who invented the heavy oil engine manufactured by Richard Hornsby & Sons?
Richard Hornsby &amp; Sons:  The company was a pioneer in the manufacture of the oil engine developed by Herbert Akroyd Stuart, which was marketed under the "Hornsby-Akroyd" name. Herbert Akroyd Stuart: Herbert Akroyd-Stuart (28 January 1864, Halifax, Yorkshire, England – 19 February 1927, Halifax) was an English inventor who is noted for his invention of the hot bulb engine, or heavy oil engine.
i don't know