[D8959AGF], Letter from Hugh De Coursey Hamilton to Edison Phonograph Works, November 13th, 1889
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Title
[D8959AGF], Letter from Hugh De Coursey Hamilton to Edison Phonograph Works, November 13th, 1889
Editor's Notes
[from London] "Each regulator of all the thirty treadle phonographs in your shipment to us of have proved DEFECTIVE & failed to GOVERN until REPAIRED. I found in every case the either the key on the shaft fitted too tightly through the slit of the regulator friction disc, or the [8?] holes for the screws which secrure the springs to the friction disc had burrs on the inside making the disk bind in the shaft." ## Also, battery cells get very hot. ## Suggests illegible improvement of fastening needles to the diaphragms.
Author
Recipient
Mentioned
Date
1889-11-13
Type
Folder/Volume ID
D8959-F
Microfilm ID
127:995
Document ID
D8959AGF
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University