Grinnell 'Duraspeed' soldered

maker:
Mather and Platt Limited

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

Grinnell 'Duraspeed' soldered fire sprinkler head, type 'B', made by Mather & Platt, Manchester, 1933-34. Part of sprinkler collection showing the development of fire sprinkler heads from 1885 when the company acquired the UK rights for the Grinnell

sprinkler patent.