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Patent model for printing films

Patent model for printing films

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Description (Brief)
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.
Location
Currently not on view
Object Name
manufacture, printing films
Object Type
Patent Model
date made
ca 1879
patent date
1879-04-22
maker
Day, Jr., Benjamin Henry
Physical Description
metal (overall material)
wood (overall material)
paper (overall material)
Measurements
overall: 9 cm x 12 cm x 5 cm; 3 9/16 in x 4 3/4 in x 1 15/16 in
ID Number
GA.89797.214493
accession number
089797
patent number
214493
catalog number
GA*89797.214493
See more items in
Work and Industry: Graphic Arts
Work
Industry & Manufacturing
Communications
Patent Models
Patent Models, Graphic Arts
Data Source
National Museum of American History
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