Blackstone & Co. was a farm implement maker at Stamford, Lincolnshire, England. In 1896 they built lamp start oil engines. By 1912 they had developed a new diesel engine that ran on vaporizing oil and was fired by a spark. It did not need a hot bulb like most engines of the time. By 1919 they had mounted a 25 hp 3 cylinder version in a crawler tractor, which they built till 1925.
By 1929 they were building diesel engines for the Agricultural & General Engineers (AGE) group. Richard Garrett & Sons assembled some of these tractors. They were similar to an International 15/30. AGE collapsed in 1932.
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After the collapse of AGE, Blackstone & Co. continued as an engine builder and was taken over by R A Lister and Company in 1937 to form Lister Blackstone [1]. R A Lister & Company was taken over by the Hawker Siddeley Group in 1965 and, in a later re-organisation, Lister became Lister Petter and Blackstone became Mirrlees Blackstone. Mirrlees Blackstone were bought by MAN Diesel, along with the diesel businesses of the collapsed GEC, although little remains. The Stockport factory has been demolished.
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