[D8137ZAC], Letter from Thomas Logan to Thomas Alva Edison, May 9th, 1881

Item

Abstract

Record of laboratory work: disc armature, copper meter cells, regulator lamps. Sent pattern of small dynamo 10 fine wire brushes & 2 brush holders to TAE in NYC today. For factory: socket machines, small testing machine, nickle moulds, armatures. Porter engine run all day very high speed (c. 600 rpm) bearing about the same very hot.

Author

Date

1881-05-09

Decade

1880-1889

Type

Identifier

D8137ZAC

Folder Set

D8137

Title

[D8137ZAC], Letter from Thomas Logan to Thomas Alva Edison, May 9th, 1881

Microfilm ID

59:79

Publisher

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