Duff Manuf'g Co. v. Forgie

BUFFINGTON, District Judge.

The Duff Manufacturing Company files this hill against W. Forgie for alleged infringement of a jacking mechanism for screwing and unscrewing oil-well tools. Two devices manufactured by respondent, and known as Forgie Devices Xo. 1 and Xo. 2, respectively, are alleged to iñíringe as follows: Xo. 1, all the claims of patent Xo. 312,316, issued February 17, 1885, to Josiah Barrett, for improvement in lifting jacks, and now owned by complainant; and Xo. 2, the third claim of said patent, the third claim of patent Xo. 455,994, and the first, second, and sixth claims of…