[N137045], Technical Note, Francis Robbins Upton, July 24th, 1880

Item

Abstract

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."

Date

1880-07-24

Decade

1880-1889

Identifier

N137045

Folder Set

N137

Title

[N137045], Technical Note, Francis Robbins Upton, July 24th, 1880

Microfilm ID

38:507

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University

Timestamp

July 24, 1880