Identifier: belltelephonemag15amerrich (find matches)
Title: Bell telephone magazine
Year: 1922 (1920s)
Authors: American Telephone and Telegraph Company American Telephone and Telegraph Company. Information Dept
Subjects: Telephone
Publisher: (New York, American Telephone and Telegraph Co., etc.)
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
s made during 1878. Another shelf is oc-cupied with models of Elisha Grays liquid transmitter of 1876and various forms of transmitters and receivers designed byhim in 1877 and 1878. Several examples of transmitters andcondenser receivers designed by Amos F. Dolbear are alsoshown. Examples of the work of these men appear in Figure13. Then, there is quite a large group of models of telephonicinstruments that were made in connection with the extendedlitigation of the Bell patents to illustrate to the courts how theseinstruments were supposed to operate. Among these are mod-els of the Reiss transmitters and receivers of 1861, 62, 63;Wrentheim rods of 1863; House transmitter of 1868; Van derWeydes, Drawbaughs, Voelkers and Randalls transmittersof 1879. A discussion of the claims put forth in favor of theseinstruments does not fall within the scope of this article.There is also a group of about 100 different infringing tele-phones collected by the Bell Company during the period of liti- 264
Text Appearing After Image:
CO

Note About Images