Thomas Knowles
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