Patent model for bank note printing: method of making plates of requisite hardness
date: label: date made
content: ca 1864
label: patent date
content: 1864-02-23
name: label: maker
content: Sellers, Alfred
notes: label: Description (Brief)
content: This patent model demonstrates an invention for bank note printing which was granted patent number 41724. In the steel transfer process used for intaglio security printing, it was difficult to make a plate that was both soft enough to receive an impression and hard enough to resist distortion in the transfer process. By this invention, a hard steel plate was faced with a sheet of soft iron.
label: Location
content: Currently not on view
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content: Work and Industry: Graphic Arts
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content: Patent Models, Graphic Arts
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content: Work
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content: Communications
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content: Industry & Manufacturing
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content: Patent Models
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: GA.89797.041724
label: patent number
content: 041724
label: accession number
content: 089797
label: catalog number
content: GA*89797.041724
objectType: label: Object Name
content: manufacture, banknote printing plate
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: .3 cm x 4.3 cm x 7.7 cm; 1/8 in x 1 11/16 in x 3 1/16 in