[D8123ZAP], Letter from Francis Robbins Upton to Thomas Alva Edison, April 4th, 1881
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Title
[D8123ZAP], Letter from Francis Robbins Upton to Thomas Alva Edison, April 4th, 1881
Editor's Notes
Hampton[?] engine "does not give satisfaction." Gramme "is not sensitive enough and allows very large variations in speed" making emf hard to regulate. "The Brown engine was so perfect that it makes this seem doubly bad." Columbia lamps nearly ready. Consider for inclusion; gives information about selection process for prime movers. (DH)
Author
Recipient
Date
1881-04-04
Type
Subject
Folder/Volume ID
D8123-F
Microfilm ID
57:839
Document ID
D8123ZAP
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University