[N146105], Technical Note, Charles Batchelor, Thomas Alva Edison, October 25th, 1880
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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."
Date
1880-10-25
Type
Folder/Volume ID
N146-F
Microfilm ID
38:946
Document ID
N146105
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University