CC0 · no rights reserved
Patent model for printers' sidesticks and 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 sidesticks made with two symmetrical series of inclined surfaces; the invention was granted patent number 133948. Matching quoins were adjusted by turning a double-threaded screw.
National Museum of American History’s own descriptionCredit linePatent model for printers' sidesticks and quoins. ca 1872. McGrath, Thomas. National Museum of American History. CC0.
