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Joshua Heilmann, German textile innovatorJoshua Heilmann, German innovator in textile manufacture. He invented the first machine for combing cotton, and helped to revolutionise the embroidery industry
Aeroplanes and warship construction by G. H. DavisAircraft and sea warfare: the influence of aeroplanes on warship construction and naval strategy during the Second World War
Aerial torpedoes designed by an Australian engineer, Mr A Dunbar Wigram. They were expected to revolutionise the methods of modern warfare, by speeding over land and sea with a deadly aim
