r- for use by the deaf. There has been an audiphone invented convenience of the device. Means are provjded for hold- fully simple instrument for one that accomplishes so much. in Chicago, but Professor Graydon claims that his instru- It requires no special skill to operate it, and one kind of ment… … attached to the Third Intermediate School C, engages the ratchet wheel when the recently. Among others was one, a bright bellows expands, But it does not do so THE AUTOPHONE, looking colored girl, who was entirely deaf. regularly, its movements being controlled The professor talked to her at a…
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![An illustration from Telephones and telegraphs: 1902 : [and Municipal electric fire alarm and police patrol systems] (1906)](https://img.insideoutlibrary.com/img/200/ia-cu31924022817674-68-27.webp)
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