[Short for telegraphophone, f. TELE- + GRAPHOPHONE, after telephone.] A form of telephone in which the spoken message is recorded at the receiving end magnetically on an iron ribbon, so as to be capable of reproduction; invented by Poulsen of Copenhagen about 1900. (See also TELEPHONOGRAPH.)
[1890: see next.]
1900. Engineering Mag., XIX. 757/1. The telegraphon, or magneto-telephonograph, an invention of the Danish engineer, Valdemar Poulsen, makes use of the fact of permanent magnetism to record … sounds … so that they can be reproduced whenever … desired.
1902. Harper’s Mag., Feb., 496. This apparatus … has been variously designated as the ‘telegraphone,’ the ‘microphonograph,’ and the ‘magnetophonograph’ in Europe.
So Telegraphophone: see quot.
[1890. Voice (N. Y.), 13 Feb.. A new instrument called the telegraphone.]
1891. Cent. Dict., Telegraphophone, an apparatus for reproducing at a distance the sounds which produced a graphophonic record; also, an apparatus for producing a graphophonic record at a distance by means of a telephonic circuit.
