[D8123ZBO], Letter from Francis Robbins Upton to Thomas Alva Edison, May 6th, 1881
https://edisondigital.rutgers.edu/document/D8123ZBO
→ View document with UniversalViewer
→ View document on Archive.org
→ Re-use this digital object via a IIIF manifest
Title
[D8123ZBO], Letter from Francis Robbins Upton to Thomas Alva Edison, May 6th, 1881
Editor's Notes
Favorable reports regarding heating the clamps. Testing on pumps require several days b/c many variables incl. weather, state of the mercury and so on. Recording results of 50 pumps, esp. time they take to evacuate lamps. Work on building furnace progresses well. Plans on using plaster of paris for sockets.
Author
Recipient
Date
1881-05-06
Type
Folder/Volume ID
D8123-F
Microfilm ID
57:877
Document ID
D8123ZBO
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University