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 142,980 pages of information and 229,093 images on early companies, their products and the people who designed and built them.

Walker, Crosweller and Co

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February 1931. Spirax Vapour and Vacuum Heating Systems.
September 1936.
June 1944
September 1950. Rada Thermostatic Shower Valve.
June 1951. Rada Thermostatic Shower Valve.
October 1952.
November 1957.
November 1961. Leonard mixing valves.
August 1962. Mira.

Makers of thermostats and shower valves, of Cheltenham and 20 Queen Elizabeth Street, London, SE1

1921 Company founded in London

1926 They moved from Dane's Inn House, 265, Strand, W.C.2 to 54-58, Queen Elizabeth-Street, London, S.E.I.[1].

1926 - October. They were appointed sole British representatives of Lewis M. Ellison of Chicago, U.S.A., the manufacturer of the Ellison inclined draught gauges for use on boiler and other power plants.[2]

1936 Introduction of Leonard thermostatic mixing valve

1937 Engineers and instrument manufacturers. Factory established in Cheltenham.

1959 First thermostatic mixing valves developed capable of working on UK supply pressures

1975 Acquired by Reed Building Products Division[3]

1976 Miralec thermostatic shower introduced. Leonard brand discontinued

1986 Company name changed to Caradon Mira[4]

See Also


Sources of Information

  1. The Engineer 1926/03/12
  2. The Engineer 1926/10/15
  3. The Times Jul 01, 1975
  4. The Times, March 19, 1987