[LB008050], Letter from Thomas Alva Edison to Francis Robbins Upton, March 11th, 1881

Item

Abstract

I want for lighting up our Office here one hundred lamps with new small sockets which have no more than two volt [variation?] with high vacuum so that the vacuum will not break down. These should be here by Thursday next or Friday. Can you do this? [P.S.] Memo. Would it not be well when you are getting a curve of copper plate lamps to test their economy at the tstart and then make a test of the economy after five hours burning to see if the vacuum has been knowcked down. I suppose your plan of brining the lamps up high on hte pumps will prevent this. But it would be well to prove the fact.

Date

1881-03-11

Decade

1880-1889

Type

Identifier

LB008050

Folder Set

LB008

Title

[LB008050], Letter from Thomas Alva Edison to Francis Robbins Upton, March 11th, 1881

Microfilm ID

80:861

Publisher

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

Item sets