Vinton v. Hamilton
Supreme Court of the United States
' Appeal from the. Circuit Court of the United States for the Northern' District of. Ohio. The bill of complaint alleged that Hamilton and the other defendants were infringing certain letters-patent, No. 143,600, dated Oct. 14, 1873, and granted to John J. Vinton, one of the complainants, for an improvement in. the manufacture of iron from furnace slag, and it prayed for an injunction to restrain them from further infringement, and for. damages, and an account, of profits.
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' Appeal from the. Circuit Court of the United States for the Northern' District of. Ohio. The bill of complaint alleged that Hamilton and the other defendants were infringing certain letters-patent, No. 143,600, dated Oct. 14, 1873, and granted to John J. Vinton, one of the complainants, for an improvement in. the manufacture of iron from furnace slag, and it prayed for an injunction to restrain them from further infringement, and for. damages, and an account, of profits. The answer denied that Vinton. was the original or first inventor or discoverer of the patented improvement,- and it…
1Opinion of the Court
Mr. Justice Woods,
after stating the case, delivered the ■ opinion of the court. ■■
It is matter of general knowledge .that pig-iron is made from iron ore in a blast or smelting furnace; that to' secure this product the furnace is charged, first, with a layer of coke or charcoal, then with a layer of iron ore, mixed with broken limestone, and so on in alternate layers until the proper quantity of these materials is placed in the furnace. The fuel is then ignited,' and, for the purpose of increasing the heat, streams of air are forced into the furnace by means of blast-pipes, the nozzles of…
2Cases cited1 opinion
- Pearce v. MulfordSupreme Court of the United States · 1880
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- Stirrat v. Excelsior Manuf'g Co.Court of Appeals for the Eighth Circuit · 1894
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