Alexander Graham Bell Experimental Telephone

Alexander Graham Bell demonstrated several experimental telephones at the Philadelphia Centennial Exposition in 1876. This unit features a single electro-magnet and could be used both as transmitter and receiver. Bell approached the problem of transmitting speech differently from other telephone inventors like Elisha Gray and Thomas Edison. They were mostly experienced telegraphers trying to make a better telegraph. Bell's study of hearing and speech more strongly influenced his work.
Object Name
experimental telephone
Bell, Alexander G.
Physical Description
wood (base material)
brass (posts material)
tin (mouthpiece material)
brass (brackets material)
overall: 6 1/2 in x 5 in x 11 in; 16.51 cm x 12.7 cm x 27.94 cm
ID Number
accession number
catalog number
patent number
Computers & Business Machines
Artifact Walls exhibit
American Enterprise
See more items in
Work and Industry: Electricity
Artifact Walls exhibit
American Enterprise
American Enterprise
Data Source
National Museum of American History, Kenneth E. Behring Center
Sewer, Andy; Allison, David; Liebhold, Peter; Davis, Nancy; Franz, Kathleen G.. American Enterprise: A History of Business in America
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