Patent model for printing films

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.
Currently not on view
Object Name
manufacture, printing films
date made
ca 1879
patent date
Day, Jr., Benjamin Henry
Physical Description
metal (overall material)
wood (overall material)
paper (overall material)
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
accession number
patent number
catalog number
See more items in
Culture and the Arts: Graphic Arts
Industry & Manufacturing
Patent Models
Patent Models, Graphic Arts
Data Source
National Museum of American History, Kenneth E. Behring Center
Additional Media

Visitor Comments

Add a comment about this object

**Please read before submitting the form**

Have a comment or question about this object to share with the community? Please use the form below. Selected comments will appear on this page and may receive a museum response (but we can't promise). Please note that we generally cannot answer questions about the history, rarity, or value of your personal artifacts.

Have a question about anything else, or would you prefer a personal response? Please visit our FAQ or contact page.

Personal information will not be shared or result in unsolicited e-mail. See our privacy policy.

Enter the characters shown in the image.