International Tooth Crown Co. v. Gaylord
Supreme Court of the United States
APPEAL FROM THE CIRCUIT COURT OF THE UNITED STATES FOB THE DISTRICT OF CONNECTICUT. In equity, for the infringement of letters patent.
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APPEAL FROM THE CIRCUIT COURT OF THE UNITED STATES FOB THE DISTRICT OF CONNECTICUT. In equity, for the infringement of letters patent. The case was stated by the court as follows: This was a bill in equity for the infringement of two letters patent, granted May 22, 1883, to Cassius M. Richmond, viz., No. 277,941 for an artificial denture, and No. 277,943 for a process for preparing roots of teeth for the reception of artificial dentures. ■ The main contest took place over No. 277,941, which covered a device intended to replace the loss or destruction of that part of the natural tooth which…
1Opinion of the CourtJustice Brown
the court.
Prior to the invention of Dr. Richmond, the only method of supplying an artificial for a natural crown, in case the tooth had decayed or broken off, was by what is called a peg tooth. This was made by drilling the nerve canal larger; then a porcelain tooth with a hole in it was ground to fit the root, and the two were connected together by a wooden or metallic pin or dowel made to fit the hole in the porcelain as well as the hole in the tooth. The operation', however, was very unsatisfactory. It was found to be impossible to fit the artificial and the natural tooth so closely…
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