[N052092], Technical Note, Thomas Alva Edison, October 21st, 1879
https://edisondigital.rutgers.edu/document/N052092
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Title
[N052092], Technical Note, Thomas Alva Edison, October 21st, 1879
Editor's Notes
made enclosed tube for baking of carbon spirals, found carbon always broke just at junction of carbon and platina, so made straight piece of carbon; also drawing by TAE labeled circle paper carbonized [but this is probably from later date see fr. 655]; spiral wound round paper core, clay put on spiral to insulate, now put larger percentage of lampblack; better way to carbonize the carbon to take wire (straight) fasten platina and then wind in form of spiral, difficult to keep spiral in position while carbonizing
Author
Date
1879-10-21
Type
Folder/Volume ID
N052-F
Microfilm ID
33:588
Document ID
N052092
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University