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Patent Model of a Paper-ruling 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 paper-ruling machine which was granted patent number 155815. The patent details mechanisms for the control of the striker, or pen-lifting apparatus.
National Museum of American History’s own descriptionCredit linePatent Model of a Paper-ruling Machine. ca 1874. Tregurtha, James. National Museum of American History. CC0.
