CC0 · no rights reserved
Patent model for exercising machine, children's railway swing
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 rocking swing for children or invalids, unrelated to printing; the invention was granted patent number 139924.
National Museum of American History’s own descriptionCredit linePatent model for exercising machine, children's railway swing. ca 1873. Shaler, Reuben. National Museum of American History. CC0.