Ansonia Brass & Copper Co. v. Electrical Supply Co.
Supreme Court of the United States
APPEAL PROM THE CIRCUIT COURT OP THE UNITED STATES POR. THE DISTRICT OP CONNECTICUT. The court stated the case as follows : This was a bill in equity for the infringement of letters; patent'number 272,660, issued February 20, 1883, to Alfred A. Cowles for an “insulated electric.conductor.”
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APPEAL PROM THE CIRCUIT COURT OP THE UNITED STATES POR. THE DISTRICT OP CONNECTICUT. The court stated the case as follows : This was a bill in equity for the infringement of letters; patent'number 272,660, issued February 20, 1883, to Alfred A. Cowles for an “insulated electric.conductor.” In his specification, the patentee stated that “before my invention copper wires had been covered with one or two braidings of cord, and paraffine, tar-, asphalt and various substances had been employed for rendering the covering waterproof and furnishing a proper insulation. With conductors of this…
1Opinion of the CourtJustice Brown
delivered the opinion of the court..
The stress of this-base is upon the question of /patentable. novelty. The art of insulating electric wires has been known almost as- long as that of conducting electricity for practical purposes by means of wires. Prior to the use of electricity for lighting, however, the feeble character of the currents conveyed upon these wires did not require that the insulating material should be non-combustible, and the skill of the inventor was directed toward a method of insulation which should protect the wire from moisture and other external injury. For this…
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- Smith v. NicholsSupreme Court of the United States · 1875
- Pennsylvania Railroad v. Locomotive Engine Safety Truck Co.Supreme Court of the United States · 1884
- Roberts v. RyerSupreme Court of the United States · 1875
- Gandy v. Main Belting Co.Supreme Court of the United States · 1892
- Blake v. San FranciscoSupreme Court of the United States · 1885
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