Hancock Inspirator Co. v. Jenks
U.S. Circuit Court for the District of Eastern Michigan
In Equity. This was a bill to recover damages for an infringement of letters patent No. 86,152, dated January 26, 1869, to John T. Hancock, for an improvement in boiler injectors.
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In Equity. This was a bill to recover damages for an infringement of letters patent No. 86,152, dated January 26, 1869, to John T. Hancock, for an improvement in boiler injectors. Tho bill recited, in the usual form, tho grant of letters patent, the introduction into general use of the patented device, both by the patentee and the plaintiff, the assignment of the patent to the plaintiff, the infringement of tho same by the defendant in the manufacturo, salo, and use of “duplex injectors,” so called, and prayed for an account, a decree for profits and damages, and for an injunction. The answer…
1Opinion of the CourtBrown, J.
The main object of all boiler injectors is to raise water by means of a vacuum, created by the condensation of steam, and to force the water so raised into the boiler from which the steam originally issued. The general construction of all these devices is much the same. The principal features of each are common to all. They consist of an upright tube, through which the water is raised into a chamber at the top, in which a vacuum is created; a second tube at right angles to the first, provided with a conical nozzle of small diameter, through which the steam is driven with great velocity…
2Cases cited10 opinions
- Loom Co. v. HigginsSupreme Court of the United States · 1882
- Seymour v. OsborneSupreme Court of the United States · 1871
- Lehnbeuter v. HolthausSupreme Court of the United States · 1882
- Vance v. CampbellSupreme Court of the United States · 1862
- Simms v. SlacumSupreme Court of the United States · 1806
5 more not listed; retrieve them via the Exa API.
3Cited by6 opinions
- Heller Bros. v. Crucible Steel Co. of AmericaCourt of Appeals for the Third Circuit · 1924
- Chicago Wooden Ware Co. v. Miller Ladder Co.Court of Appeals for the Seventh Circuit · 1904
- McBride v. KingmanU.S. Circuit Court for the Southern District of Iowa · 1896
- Mine & Smelter Supply Co. v. Braeckel Concentrator Co.District Court, W.D. Missouri · 1912
- Chambers-Bering-Quinlan Co. v. FariesU.S. Circuit Court for the Southern District of Illnois · 1893
1 more not listed; retrieve them via the Exa API.