[N057227], Technical Note, Charles Batchelor, October 21st, 1880

Item

Abstract

Pump No 1. "Oct 20 got vac 41 min without lamp. Oct 21 Could not get vacuum as Hg wwent back without cause. Took down." Fr 1074 record when lamps put on, sealed off pump 2. Pump 3 same as #2, broke in handling. Pump 4 (fr 1076) gives 3 1/2 oz per min in vacuum. Then more lamps on pumps. Fr 1079 have pump #8 operating.

Date

1880-10-21

Decade

1880-1889

Identifier

N057227

Folder Set

N057

Title

[N057227], Technical Note, Charles Batchelor, October 21st, 1880

Microfilm ID

33:1073

Publisher

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