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 138,887 pages of information and 225,312 images on early companies, their products and the people who designed and built them.

Hartley, Sons and Co

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of Etruria, Stoke-on-Trent

1925 Hartley, Sons and Co of Stoke-on-Trent, were awarded the silver medal of the Royal Sanitary Institute for their "Spiroflow" system of bio-aeration treatment for sewage.[1]

1926 Advertised for sale a 350 HP triple expansion vertical steam engine, 15 ft flywheel, by Scott and Hodgson, having been replaced by a larger engine[2]

See Also


Sources of Information

  1. The Engineer 1925/12/25
  2. Yorkshire Evening Post, 11 June 1926