Consolidated Safety-Valve Co. v. Kunkle

Blodgett, D. J.

This is a suit to enjoin the alleged infringement by defendant of two patents issued to George W. Richardson, — one, No. 58,294, dated September 25,1866, for an “improvement in safety-valves;” and the other, No. 85,968, dated January 19, 1869, for an “improvement in safety-valves.” The defenses relied upon are (1) that defendant does not infringe; (2) that complainant’s patents are void for want of novelty, and for uncertainty in the specifications and claims. The peculiar feature of these two patents is what is termed by the experts the stricture, the operation of which is to…