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 148,386 pages of information and 233,857 images on early companies, their products and the people who designed and built them.

Kennedy and Vernon

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of Liverpool

1844 James Kennedy and ? Vernon (Kennedy & Vernon) were credited with the introduction of the 'double T' or 'H' section rolled bar (the 'I' beam for structural work). Patent dated 15th April 1844 [1]

See Also


Sources of Information

  1. [1] 'Tubular and Other Iron Girder Bridges' by G D Dempsey. Virtue, 1865