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Patent model for printers' quoins
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 an elliptical quoin, set between ordinary sidesticks and turned by a wrench to force the sticks apart; the invention was granted patent number 201075.
National Museum of American History’s own descriptionCredit linePatent model for printers' quoins. ca 1878. Whittlesey, George D.. National Museum of American History. CC0.