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 138,129 pages of information and 223,036 images on early companies, their products and the people who designed and built them.

Thomas Knowles

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of Spring Vale Fireclay Works, Darwen, Lancs

1914 Sanitary ware manufacturers. Specialities: salt glazed sanitary pipes, bends, junctions, gullies and all kinds of traps and fittings, cattle troughs, pig troughs, horse mangers, sinks, waste water closets, latrines and urinals, patent manholes, patent anti-flood traps, patent outlet pipes for gas cookers and Knowles' patent golf sand boxes. [1]

1962 Acquired by Hepworth Iron Co


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