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Patent model for autographic printing
From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.
About this work
This patent model demonstrates an invention for a method of making printed copies from handwriting on paper. Sulphate of iron was added to ordinary writing ink. The completed writing was pressed onto a plate coated with sensitized gelatine, which received the image in a form that could be printed like a lithograph. The invention was granted patent number 223873. The patent model consists of a coated plate with an image. Both coating and image have deteriorated badly.
National Museum of American History’s own descriptionSubjects
Credit linePatent model for autographic printing. ca 1880. Bardwell, John Jex. National Museum of American History. CC0.
