Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,189 pages of information and 233,421 images on early companies, their products and the people who designed and built them.
of Colombo Street, Derby
1876 Ewart (in USA) developed a cast link detachable chain which he patented widely
1880 Company established by Francis Ley who licensed the chain from Ewart
1913 Makers of "Ley" chainbelt
1914 Specialities: conveyors, elevators and chains, modern appliances for handling any material in bulk or package. Employees 1,200. 
c1916 became Ewart Chainbelt Co