National Museum of American History
Patent Model for a Rotary Perfecting Printing Press
Hoe, Richard March · ca 1875
This patent model demonstrates an invention for a rotary perfecting printing press which was granted patent number 162651. The press used a web of set-off paper that replaced the usual sheets. The web was used on one side and then the other, repeatedly, allowing the ink time to dry on each side before it was presented again.
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