I collect 19th Century U. S. patent coffee roasters from 1840 on and I bought this listed coffee roaster that I was fairly sure was a dough mixer. I bought it because it looked like an early mixer on steroids the way it mixed. Please correct me if I’m wrong.
if you would like to see some of my early coffee roaster I have them listed on my site at https://www.oldcoffeeroaster.com/page-11/page8.html