Lackawanna Iron & Steel Co. v. Davis-Colby Ore Roaster Co.

Citations

• 131 F. 68
• 65 C.C.A. 306
• 1904 U.S. App. LEXIS 4269

Syllabus

<p>1. Patents — Construction of Claims — Ore Roasting Eubnaces.</p> <p>The Greer patent, No.. 508,542, claims 3 and 8, for an ore roasting furnace, consisting of three vertical chambers, a combustion chamber, a stack, and an ore chamber between the other two, and communicating with each “at different points in its height,” “substantially as described,” “the combustion and ore roasting chambers being of substantially the same height,” require all three chambers to be substantially coextensive, as shown in the drawings.</p> <p>2. Same — Infringement. .</p> <p>The Greer patents, Nos. 495,883 and 508,542, for an ore roasting furnace, made up of three vertical chambers, each coextensive with the other two, the center one being a roasting chamber to hold the ore, and1 having openings at several points into each of the others, a combustion chamber on one side, fed from below by fuel gas intermixed with air, and a stack chamber on the other side, the draught created by which draws the flames from the combustion through the roasting chamber, were not anticipated, and are valid. Claims 3 and 8 of patent No. 508,542,- covering tbe combination of the three chambers, and claims 3 and 4 of No. 495.883 and 4 and 5 of No. 508,542, covering a gas chamber in tbe base of tbe combustion chamber, having in its top exit openings for gas and air ports adjacent, construed, and held infringed.</p>