National Museum of American History
Patent Model of a Lithographic Scraper Press
Parks, John A. · ca 1880
This patent model demonstrates an invention for a lithographic scraper press which was granted patent number 228271. The patent describes a method of mounting a scraper to a swinging arm to produce more even pressure in "Photo-Mechanical Presses.”
🔒
Order museum-quality prints
Sign in to order prints, canvas, and more of this work. Browsing and full-resolution downloads stay free.