Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 129,273 pages of information and 204,289 images on early companies, their products and the people who designed and built them.
1892 Joseph Day granted a patent on a three-port two-cycle engine
1892 Frederick W. C. Cocks, an employee of the company took out a patent for improvements to the Day engine
1892 Article on the engine published in 'Iron' 
1893 Engine production was undertaken by Llewellin and James
1894 Joseph Day was bankrupt
Production of the engine was carried out by the Millbury Pier Engineering Co
1908 The Day Motor Co was formed