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[N146105], Technical Note, Charles Batchelor, Thomas Alva Edison, October 25th, 1880

Title: [N146105], Technical Note, Charles Batchelor, Thomas Alva Edison, October 25th, 1880
Editor's Notes: REf 60:1-4. For treating filaments while carbonizing. Fr 946 chlorine first then a volatile parafine. Heating by concentrating light through lense. fr 947 "platinum nickel cobalt or other infusible metal brought to incandescence in a carbon vapor & carbon deposited it is then stripped off or it may be loosened by eating the metal." FR 948 "Caveat: induction spark and heating loop same time--vapor of volatile parafine in tube in carbon X soaked in tar. Electrical carry8ing coats carbon. Carbonize under pressure." See exptl reseasrch 5:132. Fr 949 "references for [charging] field from separate source of electricity" 4:105-7 "The gramme machine was then used to run the magnet and a fearful pulling was the result as nearly all the currents were short circuited."
Author: Batchelor, Charles; Edison, Thomas Alva
Date: 1880-10-25
Type: Technical Note
Subject: Metals and minerals; Carbon, coal, glass, ceramics; Incandescent lamp
Folder ID: N146-F
Microfilm ID: 38:946
Document ID: N146105
URL: https://edisondigital.rutgers.edu/document/N146105
Rights: Thomas Edison National Historical Park
Publisher: Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
License: CC0 1.0 Universal
Has Version: Archive.org Viewer, Microfilm Series Reel 38

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