Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 363
myself, I must admit. I won that barrel of apples from Batchelor,though, and was mighty glad to get it. In October, 1905, I paid Mr. Edison a visit at his laboratory,when he showed me the phonograph as now perfected. Chiefamong his improvements is a composition forrecords which is much harder than… … Edison phonograph.A, speaking tube. B, D, scale. C, receivingcylinder. E, repeat lever. F, swivel plate. G,connecting key. H, foot trip. I, plug attach-ment. J, ear-tubes. K, switch. arm is placed the highly polished, button-shaped sapphire whichtracks with fidelity the grooves which sound has…
Inventions · Inventors
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![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten10unit-123-102.webp)
