[D8959AGF], Letter from Hugh De Coursey Hamilton to Edison Phonograph Works, November 13th, 1889

Item

Abstract

[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.

Date

1889-11-13

Decade

1880-1889

Type

Identifier

D8959AGF

Folder Set

D8959

Title

[D8959AGF], Letter from Hugh De Coursey Hamilton to Edison Phonograph Works, November 13th, 1889

Microfilm ID

127:995

Publisher

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