[N137045], Technical Note, Francis Robbins Upton, July 24th, 1880
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Title
[N137045], Technical Note, Francis Robbins Upton, July 24th, 1880
Editor's Notes
Testing RR insulation. Fr 509 using a "wire wrapped about one of the conductors and burined about six inches in moist earth." Testing MP lin insulation. Fr 511 lamp carbon resistance. Then back to RR insulation. "There is no certainty in testing on dry rails and sleepers. Method: make as good insulation as is wished to be tested then wet everything and test."
Author
Date
1880-07-24
Type
Folder/Volume ID
N137-F
Microfilm ID
38:507
Document ID
N137045
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University