Dictation_using_cylinder_phonograph.png

Summary

Description	Woodcut of the use of an early wax cylinder phonograph , or gramophone , for dictation. Although the phonograph was first invented by Thomas A. Edison , the source text says this was a machine called the 'G', invented by Alexander Graham Bell, Chichester A. Bell, and Sumner Tainter. The user turns the cylinder by pumping the treadle, and speaks into the mouthpiece. The recording is played back by replacing the mouthpiece with the 'stethoscope' type earphones lying on the desk. Extra wax cylinders are seen on the desk. Alterations to image: removed caption, which read: "The Gramophone receiving a dictation".
Date	1897
Source	Downloaded 2008-2-3 from John Clark Ridpath, ed. (1897) The Standard American Encyclopedia, Vol.3 , The Encyclopedia Publishing Co., New York, USA, p.1199, fig.1 on Google Books
Author	The drawing is signed, 'Electrical World, N.Y.'
Permission ( Reusing this file )	Public domain - published in US before 1923

Public domain	This media file is in the public domain in the United States . This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.	United States
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