National Museum of American History
Road Scraper Patent Model
Ball, Hiram W. · 1879
Hiram W. Ball submitted this model with his patent for an “improvement in road scrapers” that received patent number 221,273 on November 4, 1879. The horse drawn drag scraper incorporated a catch that allowed the scoop to dump its load without having to raise the handle.
🔒
Order museum-quality prints
Sign in to order prints, canvas, and more of this work. Browsing and full-resolution downloads stay free.