[N001165], Technical Note, George E Carman, Charles Batchelor, May 17th, 1879

Item

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Title

[N001165], Technical Note, George E Carman, Charles Batchelor, May 17th, 1879

Editor's Notes

more battery tests; on 17 May at 4:30 pm taken to Bergmann & Co by TAE & Batch, brought back and put on 28th at 5:30 pm, stopped following day, continues notes following frame; fr. 104 p. 169 Made a button for transmitting of Sulphide of Copper about 1/2 as loud as regular button articulation was very perfect best at 9 ohms resistance, with drawing

Date

1879-05-17

Decade

1870-1879

Identifier

N001165

Folder Set

N001-F

Microfilm ID

29:102

Publisher

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