[D8854AAB], Letter from Stanhope Co Ltd, Harold Collet to Thomas Alva Edison, January 7th, 1888

Item

Abstract

"Colonel Gouraud, whom you know, has written to you this week concerning a small house Telephone which we are about to bring out, and in which he is interesting himself. Enclosed we have the pleasure to send you two samples of the ordinary pattern, without bells; we also enclose diagram of connections. The battery used should not exceed 3 cells at each end; one cell is enough provided the bells employed will trip with a single cell. ### The adjustment of the diaphragm should be made equal to one-third of a turn to the nut at the back of the magnet. We mention this in case you should care to take the telephone to pieces, but of course with a membrane diaphragm the adjustment will vary with varying battery power." We are, Sir, Yours faithfully, The Stanhope Company, Limited. Harodl Collet Secretary [Paper is illustrated with printed drawings of two telephones]

Date

1888-01-07

Decade

1880-1889

Type

Identifier

D8854AAB

Folder Set

D8854

Title

[D8854AAB], Letter from Stanhope Co Ltd, Harold Collet to Thomas Alva Edison, January 7th, 1888

Microfilm ID

124:953

Publisher

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