Patent model for printing films
date: label: date made
content: ca 1879
label: patent date
content: 1879-04-22
name: label: maker
content: Day, Jr., Benjamin Henry
notes: label: Description (Brief)
content: This patent model demonstrates an invention for Day's shading medium, an important tool in chromolithography and later in other kinds of commercial illustration. A flexible glue sheet, cast from the surface of a plate ruled with parallel lines, was inked and then pressed over an image to shade it. The invention was granted patent number 214493. The model consists of a very fragile pack of samples.
label: Location
content: Currently not on view
setName: label: See more items in
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.89797.214493
label: accession number
content: 089797
label: patent number
content: 214493
label: catalog number
content: GA*89797.214493
objectType: label: Object Name
content: manufacture, printing films
label: Object Name
content: Film, Printing
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: wood (overall material)
label: Physical Description
content: paper (overall material)
label: Measurements
content: overall: 9 cm x 12 cm x 5 cm; 3 9/16 in x 4 3/4 in x 1 15/16 in