Replica Bell "Iron box" experimental telephone, patent #174,465
date: label: date made
content: 1876
name: label: maker
content: Bell, Alexander Graham
notes: label: Description (Brief)
content: 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."
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.252598
label: catalog number
content: 252598
label: accession number
content: 49064
objectType: label: Object Name
content: experimental telephone
label: Object Name
content: Telephone, Iron Box
label: Object Name
content: telephone
label: Other Terms
content: Telephone, Iron Box; Telephones; Transmitter/Receiver; Magneto
physicalDescription: label: Measurements
content: overall: 4 in x 4 1/2 in; x 10.16 cm x 11.43 cm