National Museum of American History
Printing press and sheet-fed apparatus
Swift, Henry D. · ca 1884
This patent model demonstrates an invention for a press for printing material such as envelopes, and the pneumatic apparatus for feeding sheets to the press. The two patents, numbers 303550 and 386440, are demonstrated on a single model. Despite the dates of the patents, both applications were made on 10 July 1880. They were granted after unusually long delays.
🔒
Order museum-quality prints
Sign in to order prints, canvas, and more of this work. Browsing and full-resolution downloads stay free.