Electrician; born in
Barnesville, O., Aug. 2, 1835; in early life was a blacksmith, carpenter, and boatbuilder.
Later he went to Oberlin College, where he followed special studies in physical science, supporting himself by working at his trade.
In 1867 he invented a self-adjusting telegraph relay, and soon afterwards designed the telegraphic switch and annunciator for hotels, the private telegraph line printer, the telegraphic repeater, etc. In 1872 he organized the Western Electric Manufacturing Company, but in 1874 withdrew from it. In 1876 he claimed to have invented the speaking telephone, but after a memorable litigation that honor was awarded by the courts to
Prof. Alexander Graham Bell.
In 1893
Professor Gray invented the telautograph, which so far improved the telephone and the telegraph as to transmit the actual handwriting of messages.
He established the Gray Electric Company at
Highland Park, Ill., and organized the Congress of Electricians, in connection with the
World's Columbian Exposition in 1893, and was its chairman.
His works include
Experimental researches in electro-harmonic telegraphy and telephony; and
Elementary talks on Science.
He died in
Newtonville, Mass., Jan. 21, 1901.