Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,143 pages of information and 233,681 images on early companies, their products and the people who designed and built them.

Hepworth and Grandage

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January 1920.
January 1920.
December 1929.
March 1932.
August 1933. Hepolite.
October 1936.
February 1937.
July 1938.
April 1947.
December 1947.
February 1948.
May 1948.
June 1948.
August 1948.
October 1949.
October 1949.
November 1950.
October 1955.
September 1957.
April 1962.
July 1962.
Aug 1962.
1963. View of the factory works.
November 1968.

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

1947 Acquired by Associated Engineering Group[1].

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[2].

1973 Hepworth and Grandage would acquire Cannon and Stokes, of Leicester, makers of nozzle guide vanes and other gas turbine components, which had previously been 44% owned by Rolls-Royce[3]

See Also


Sources of Information

  1. The Times 10 June 1947
  2. The Times 30 December 1965
  3. The Times, 27 July 1973