William Burnham Woods,
McMurray v. Mallory — Opinion of the Court
“ The contention of the appellants that the soldering-iron of the Tillery & Ewalt patent is merely the disk of the Barker patent with a large part of its circumference removed, defeats itself, for when a large part of the disk is removed it ceases to be a disk, and becomes the mere soldering-iron of the Tillery & Ewalt device; whereas, as we have seen, a disk is an essential element in the invention covered by the Barker patent. ”
