Hornsby oil engine 

Hornsby oil engine rated 10.5hp sold on 26/6/1915 J.Dyer, Thorpe Marieux, Cockfield
Via agents Wood & Co of Bury St Edmunds.
Brought from a friend locally, part of its history is that when it was on the farm the sons of the farmer were milling wheat and they were so good at it they nearly put the local miller out of business until the father told them they couldn’t milk with it