Patent model for Edison telephone, US Patents #221957 and 231704
date: label: date made
content: 1880
name: label: maker
content: Edison, Thomas Alva
notes: label: Description (Brief)
content: A model to accompany the applications for US Patent #221957, "Telephone," issued 25 November 1879; and US Patent #231704, "Electro Chemical Receiving Telephone," issued 31 August 1880, both to Thomas A. Edison. A light wooden base on which is mounted a wooden cover with a mouthpiece on top making contact with a point in a mica diaphragm. A chalk drum is mounted inside along with mockups of various electromagnets, bells, switches, and other components.
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.252623
label: catalog number
content: 252623
label: accession number
content: 49064
objectType: label: Object Name
content: Motophone
label: Other Terms
content: Motophone; Telephones; Transmitter
physicalDescription: label: Measurements
content: overall: 6 1/8 in x 3 3/4 in x 3 3/4 in; 15.5575 cm x 9.525 cm x 9.525 cm