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 148,151 pages of information and 233,681 images on early companies, their products and the people who designed and built them.

Jonas and Colver

From Graces Guide

Jump to: navigation, search
January 1920.
January 1920.
January 1920.

of Continental and of Novo Steel Works, Sheffield

1870 Company established by Joseph Jonas and Robert Colver.

1878 Advertising their tool steel, drill rod, and 'Continental' needle wire, etc in the USA. Agents for USA and Canada: M. Diamond & Co. US Warehouse: 8 Ford Street, Hartford, Conn.[1]

1892 Incorporated as a private limited company.

Absorbed Colver Brothers and W. T. Beesley and Co

1903 Mr B. Hunstman wrote to The Times pointing out that Ajax steels from his company and steels from Messrs Jonas and Colver, probably the largest producer of high speed steels, were of comparable quality to those of Armstrong Whitworth for tool making[2].

1905 See 1905 Industries of Sheffield and District

1907 Re-registered as a private limited company. Presumably at this time was renamed Sir Joseph Jonas, Colver & Co., Ltd.

1914 Steel manufacturers. Specialities; crucible cast steel of every description; "Novo Superior" and "Novo" best special high-speed steels; Siemens-Martin steel, cold rolled steel and wire; files, hammers, saws and mining and quarry tools. Employees 2,500. [3]

Renamed Jonas and Colver

1937 Steel and file manufacturers. [4]

1967 One of the larger makers of high speed and tool steels not subject to nationalisation[5]

1974 Designed a new carbide face milling cutter which removed large amounts of metal using a new tool geometry.[6]

See Also


Sources of Information

  1. [1] American Machinist, Nov 1878, p.10
  2. The Times, 16 November 1903
  3. 1914 Whitakers Red Book
  4. 1937 The Aeroplane Directory of the Aviation and Allied Industries
  5. The Times, Apr 26, 1967
  6. The Engineer 1974/09/05