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[D7929ZBD], Letter from Lemuel Wright Serrell to Thomas Alva Edison, April 8th, 1879

Title: [D7929ZBD], Letter from Lemuel Wright Serrell to Thomas Alva Edison, April 8th, 1879
Editor's Notes: Re: Phono case 174. Pat Office says flywheel used to obtain uniform motion isn't an invention. Extensive marg: "You can tell Patent Of that if they desire to throw out the claim they may do so, but that it cost a large amount of money & expense to develop the fact that the infinitessimal friction of the shaft produced wrong intonations of the voice which was corrected by an abnormally heavy flywheel....." [continues; large mass needed to make phono work well, while other applications use wind vane or other means of uniform motion.....]
Author: Serrell, Lemuel Wright
Recipient: Edison, Thomas Alva
Date: 1879-04-08
Type: Letter
Subject: Patent application; Cylinder phonograph
Folder ID: D7929-F
Microfilm ID: 51:459
Document ID: D7929ZBD
URL: https://edisondigital.rutgers.edu/document/D7929ZBD
Rights: Thomas Edison National Historical Park
Publisher: Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Has Version: Archive.org Viewer, Microfilm Series Reel 51

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