[N301209], Technical Note, Francis Robbins Upton, February 9th, 1880
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Title
[N301209], Technical Note, Francis Robbins Upton, February 9th, 1880
Editor's Notes
test of split rings with air spaces and cups placed on the outside to force air in, conclude n.g. and discusses problems in arrangement; armature made of iron plates .037 inch thick bolted together with brass rods insualted from the ends
Author
Date
1880-02-09
Type
Subject
Folder/Volume ID
N301-F
Microfilm ID
32:887
Document ID
N301209
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University