[D8230K], Letter from Francis Robbins Upton to Thomas Alva Edison, January 17th, 1882

https://edisondigital.rutgers.edu/document/D8230K

View document with UniversalViewer   → View document on Archive.org  → Re-use this digital object via a IIIF manifest

Title

[D8230K], Letter from Francis Robbins Upton to Thomas Alva Edison, January 17th, 1882

Editor's Notes

Spiral lamps show abt 11 per hp, but don't last long. Ott is trying to get better shaped spirals. Howell and Holzer are doing related experiments. Do you want double chamber lamps tested for life, or should we wait till you come out here? "How about the names in our paper as asked the other day? Shall we keep the names and add that of Maj MacLaughlin?" Welsh is "doing fairly." "The carbons are very good resistance and excellent body and color." "Lawson does not want to take charge and experiment with Welsh here, as he says he could spoil any experiment if he so wished to, especially as he Lawson would have to use the men that are under Welsh now." Turning out about 800 lamps a day off the pumps. Curves are about same as before. 24/25 of the 16cp lamps last longer than 8 days. consider for inclusion: view of lamp factory dh 13dec02

Date

1882-01-17

Decade

1880-1889

Type

Folder/Volume ID

D8230-F

Microfilm ID

61:728

Document ID

D8230K

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Download CSV | JSON