Patent model for bank note printing: method of making plates of requisite hardness

Description (Brief)
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.
Currently not on view
Object Name
manufacture, banknote printing plate
date made
ca 1864
patent date
Sellers, Alfred
Physical Description
metal (overall material)
overall: .3 cm x 4.3 cm x 7.7 cm; 1/8 in x 1 11/16 in x 3 1/16 in
ID Number
patent number
accession number
catalog number
Industry & Manufacturing
Patent Models, Graphic Arts
Patent Models
See more items in
Culture and the Arts: Graphic Arts
Patent Models
Patent Models, Graphic Arts
Data Source
National Museum of American History, Kenneth E. Behring Center

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