[X120CAI], Letter from Thomas Alva Edison to Frank Julian Sprague, January 9th, 1884
https://edisondigital.rutgers.edu/document/X120CAI
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Title
[X120CAI], Letter from Thomas Alva Edison to Frank Julian Sprague, January 9th, 1884
Editor's Notes
[CHECK PATENT APPS] [TAE AUTOGRAPH] "How would it do to have one of the large indicators to regulate by on one of the feeders and use the cheaper detector with lamp as in volt box for the other feeders; this would save about 24 dollars on each feeder & help us out greatly. I was thinking of another dodge & that is to use one of the regular feeders indicators & then on the other feeders connect the positive of one feeder with the positive of another feeer through a $5 detector if both were of same potential the detector wouldn't deflect & if one higher than another it would deflect one way or other. Is there anything in this idea. I want to cheapen down the station.
Author
Recipient
Date
1884-01-09
Type
Folder/Volume ID
X120C-F
Document ID
X120CAI
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University