Object Details
maker
Bell, Alexander Graham
Description (Brief)
Centennial Iron Box Instrument, Patented by A.G. Bell, March 7, 1876, Patent # 174465. Model of unit demonstrated at the Centennial Exposition of 1876 in Philadelphia. This is not the original Patent Office model. Wooden stand supporting a black iron cylinder. Armature magnet mounted axially inside cylinder. Toroidal coil mounted inside cylinder. Leads from coil pass thru the bottom of the cylinder and connect to the binding posts beneath the base. Label on bottom: "Property / American / Bell Telephone Co."
Location
Currently not on view
date made
1876
ID Number
EM.252598
catalog number
252598
accession number
49064
Object Name
experimental telephone
Telephone, Iron Box
telephone
Other Terms
Telephone, Iron Box; Telephones; Transmitter/Receiver; Magneto
Measurements
overall: 4 in x 4 1/2 in; x 10.16 cm x 11.43 cm
See more items in
Work and Industry: Electricity
Data Source
National Museum of American History
Link to Original Record
Record ID
nmah_703362