Chief Nicholas declared the German invention impracticable. "It is much too heavy to carry," he said, "it does not allow a fireman to bend over and in Winter the constant stream of water directly over ...
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 ...
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