Improvements in artificial teeth / [Cassius Montezuma Richmond].

  • Richmond, Cassius Montezuma.
Date:
1891
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in artificial teeth / [Cassius Montezuma Richmond]. Source: Wellcome Collection.

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    2 N° 12,425.—A.D. 1890. Richmond's Improvements in Artificial Teeth. Description of the Drawing. The drawing represents to a scale of about twice the actual linear dimensions a vertical section of an artificial tooth made in accordance with my invention. It is a tooth intended to be attached to a natural root by means of a screw pin which passes from the under side of the artificial crown downwards into the root; '5 it is to teeth of this class and to no other that my invention applies. a is the porcelain body of the tooth, h is a platinum tube and c is a screwed pin of a suitable inexpensive metal. The platinum tube b is inserted when the porcelain is moulded and is baked with it; the pin c is inserted afterwards. Having now particularly described and ascertained the nature of my said 10 invention and in what manner the same is to be performed I declare that what I claim is :— An artificial tooth of porcelain with a platinum tube embedded in it open on the underside of the tooth ; and a screw pin fixed in this tube so as to project downwards suitably to form a connection between the tooth and a natural root. 15 Dated this 8th day of May 1891. CARPMAEL & Co., Agents for the Applicant. London : Printed for Her Majesty’s Stationery Office, by Darling & Son, Ltd.—1891. /