Prosser v. United States

Thos. Prosser & Son imported into the country at the port of New York certain ring-shaped metal grinders, invoiced as cast-iron grind*30ing disks and designed to form part of a machine for grinding corn, licorice root, and similar substances. These grinding disks are thinner at the inner than at the outer edge and from the beveled surface thus presented project a large number of teeth of graduated sizes, placed in rows, with the coarser teeth near the center and the finer near the rim of the disk. The teeth are cast with the so-called disk and on one or both sides of it, as its position in the…