[D8123O], Letter from Francis Robbins Upton to Thomas Alva Edison, February 28th, 1881

https://edisondigital.rutgers.edu/document/D8123O

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Title

[D8123O], Letter from Francis Robbins Upton to Thomas Alva Edison, February 28th, 1881

Editor's Notes

Engine works well, pump all right. Mercury pump requires 9 rpm to get mercury to top, showing considerable leakage. Dyanamo we've been using crossed at commutators; replaced it. Do you want us to measure webers as well as volts on half lamps, so they can be paired? With new insts from Bergmann we can do this easily. Have let Burroughs of Newark go ahead on Bradley's moulds. "I have very little faith in the paper at present;" discusses manufacture & carbonizing of fiber. Dr. Haid working on paper. "I shall do everything to make paper a success, for I know the value of a cheap low resistance lamp."

Mentioned

Date

1881-02-28

Decade

1880-1889

Type

Folder/Volume ID

D8123-F

Microfilm ID

57:783

Document ID

D8123O

Publisher

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