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Patent model for stamp cancelling machine
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 tool for turning a sheet of metal into a printing plate while writing on it. The air-powered writing instrument made a series of sharp blows to the metal, knocking out projections on the back of the sheet. The projections formed a facsimile of the writing in reverse and in relief for printing at a type press. Maker, patent number, and date are unknown.
National Museum of American History’s own descriptionCredit linePatent model for stamp cancelling machine. ca 1879. Leavitt, Thomas. National Museum of American History. CC0.
