[D8854AAB], Letter from Stanhope Co Ltd, Harold Collet to Thomas Alva Edison, January 7th, 1888
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Title
[D8854AAB], Letter from Stanhope Co Ltd, Harold Collet to Thomas Alva Edison, January 7th, 1888
Editor's Notes
"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]
Author
Recipient
Mentioned
Date
1888-01-07
Type
Subject
Folder/Volume ID
D8854-F
Microfilm ID
124:953
Document ID
D8854AAB
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University