Ide v. Ball Engine Co.
Supreme Court of the United States
APPEAL FROM THE CIRCUIT COURT OF THE UNITED STATES FOR THE NORTHERN DISTRICT OF ILLINOIS. This was a bill in equity for the infringement oi letters patent No. 301,720, issued July 8, 1884, to the plaintiff Ide, for a steam-engine governor.
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APPEAL FROM THE CIRCUIT COURT OF THE UNITED STATES FOR THE NORTHERN DISTRICT OF ILLINOIS. This was a bill in equity for the infringement oi letters patent No. 301,720, issued July 8, 1884, to the plaintiff Ide, for a steam-engine governor. Another patent, No. 308,498, issued to the same party, November 25,' 1884, was originally embraced in the bill, but upon the trial in the court below the charge relative to this patent was not pressed, and the case was rested wholly upon No. 301,720. “ This invention,” said the patentee, in his specification, “ relates to that. class of steam-engine…
1Opinion of the CourtJustice Beown
The stress of this case is upon the novelty of the invention covered by the patent of July 8, 1884, to the plaintiff Albert L. Ide.
Both the plaintiff and defendant are manufacturers arid dealers in a particular type of steam engines known as “ electric-lighting-engines,” and used for generating and controlling the electric-lighting circuits now in common use, principally under the incandescent system.
The governors used upon these engines are not the old, and familiar fly-ball governors, but consist of weights, whose centrifugal action is counterbalanced by centripetally-acting springs,…
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- Titeflex Metal Hose Co. v. RobertsonCourt of Appeals for the D.C. Circuit · 1932