Hughes typewriting telegraph instrument, 1860, invented about 1855 by David E Hughes (1829/31-1900), US patent numbers, 14,917, 1856; 22,531, 1859 and 22,770, 1859; British patent number 938, 1858. cast iron; mahogany (wood); brass (copper, zinc alloy); steel (metal); insulating material; lead (metal); ivory; ebony; paper. overall: 1160 mm x 750 mm x 800 mm, 110kg; overall (estimate): 1000 mm x 700 mm x 650 mm. SCM - Telecommunications
