Lincoln Engineering Co. v. Stewart-Warner Corp.

The District Court 1 and the Circuit Court of Appeals 2 have held the petitioner guilty of contributory infringement of the Butler Patent No. 1,593,791. We granted certiorari because of alleged conflict with our decision in Rogers v. Alemite Corporation, reported with Bassick Manufacturing Co. v. Hollingshead Co., 298 U. S. 415. Like that in the Rogers case, the patent in suit has to do with apparatus for lubricating bearings, especially those of automobiles, by the use of a nipple or fitting connected with the bearing, a gun consisting of a compressor or pump for propelling the lubricant…