Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 125,942 pages of information and 196,584 images on early companies, their products and the people who designed and built them.
1876 Robert Luke and Thomas W. Ashby retire from Ashby, Jeffery and Luke and a year later Edward Christopher Blackstone joined with George Edward Jeffery and it became Jeffery and Blackstone of Rutland Ironworks.
1881 Mention of a 4.5 hp vertical steam engine by Jeffrey and Blackstone 
1882 Fire at the J&B premises destroys the patterns 
1882 J&B exhibit a grass-mower at the Bath and West show at Cardiff 
1882 J&B Exhibit a hay-maker at the Royal Agricultural Show at Reading 
1882 Jeffery sold his interest in the business.
1887 Moved to new works.
1887 Exhibited the 'Viator' engine at the Newcastle Show.
1889 Jeffery and Blackstone became a limited company and changed their name to Blackstone and Co