Invention for Improvement in Processes of Coloring Photographs

Description (Brief)
Patent consists of a method of preparing photographs for coloring: first immersing the photo in a "clearing solution of rosin and parrafine, each previously dissolved in turpentine, and then applying to the face a coat of rosin dissolved in alcohol, and to the back a coat of the clearing solution..." Common oil colors are then applied to the back "in the usual way."
Object Name
patent model, photographs
patent model
date made
ca 1878-07-09
patent date
Pennington, Susan M. H.
Physical Description
metal (overall material)
container: 24 in x 12 1/2 in; 60.96 cm x 31.75 cm
ID Number
catalog number
patent number
accession number
Invention and the Patent Model
Patent Models
See more items in
Culture and the Arts: Photographic History
Patent Models
Invention and the Patent Model
Invention and the Patent Model
Data Source
National Museum of American History, Kenneth E. Behring Center
Additional Media

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