Tunzelmann, George William von, 1856- · New York, Scribner & Welford · leaf 192
s engraved upon it more than a thousand timeswithout showing any signs of deterioration. The instrument was called the Graphophone or Grapho-phone-Phonograph, in order to distinguish it from Edisonsoriginal instrument. It was completed in the year 1885,and was exhibited privately to one of Edisons… … Fig. 59. ELECTRICITY IN MODERN LIFE. still hoped that it might be made a practical success. Theinstrument was patented in the following year. Its present form is shown in Fig. 59, which exhibits anoperator speaking into the instrument, while Fig. 60 shows
Electric industries · Electricity
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