Part Of: Notebook Series -- Notebooks by Edison and Other Experimenters -- Disc Record Books

[NA313-F] N-16-01-18 (1916)

This notebook was used by Edison in January 1916 for notes on experiments to improve the composition of disc record blanks and the varnish surfaces applied during the transfer process. The experiments involve the use of different ingredients in various proportions, as well as variations in the dipping and baking processes. Also included is a list of "soft solids" for use in record blanks, with the observation that it should take "at least 100 mins [for] 3cc to evaporate from hot plate." The front cover is labeled "1916 #2 Disc Expmts 1-18-16." The pages are unnumbered. Only 10 pages have been used.

Courtesy of Thomas Edison National Historical Park.

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