Williams Patent Crusher Co. has been manufacturing quality heavy duty size reduction equipment since 1871. We offer a vast product line including Roller Mills, Pulverizers, Hammer Mills, Primary & Secondary Crushers, Impact Dryer Mills, Impact Crushers, Refuse Shredders, Shear Shredders, Nife Hogs, Nife Granulators, Wood Hogs, Chippers, Apron Pan Feeders, Feeder Breakers, Air Classifiers, Single & Double Roll Crushers, and so much more. Founder invented and patented the world's first Hammer Mill in 1896 - based on his revolutionary mid-air impact technology.