Hepworth and Grandage
of St. John's Works, Bradford
1907 Company founded.
1910 Private company.
1919 March. Advert for Hepworth piston rings as used on the Napier Lion engine in the DH9 biplane.
1937 Manufacturers of pistons, piston rings, gudgeon pins, cylinder liners and valve inserts. "Aero Vacrit" Piston Rings. "Heplex" and "Hepolite" Pistons. "Vacrit" Cylinder Liners.
1939 See Aircraft Industry Suppliers
1949 Advert. Automotive components.
1961 General engineers and manufacturers of pistons, rings, pins, cylinder liners, grey iron castings and gas turbine blades. 5,000 employees.
1963 Motor Show exhibitor. Hepolite pistons.
1965 Factories at Bradford, Saltaire, Leeds, Yeadon and Sunderland. Description of detailed planning of the company's training programme and staff progression for all of its employees.
Sources of Information
- The Times 10 June 1947
- The Times 30 December 1965
- The Times, 27 July 1973
- The Autocar of 29th March 1919 p25
- The Autocar of 19th August 1949 Advert p5
- 1963 Motor Show
- 1961 Dun and Bradstreet KBE
- 1937 The Aeroplane Directory of the Aviation and Allied Industries