Specification of Walter Whitehouse : sustaining artificial teeth by atmospheric pressure.

  • Whitehouse, Walter.
Date:
1875
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Walter Whitehouse : sustaining artificial teeth by atmospheric pressure. Source: Wellcome Collection.

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    2 A.D. 1875.—N° 596. Provisional Specification. Whitehouse's Improved Method of Sustaining Artificial Teeth. aid of wires, clasps, or springs. The flexible disc or diaphragm thus forms the top of a sort of vacuum or suction chamber, formed by making an opening in the mounting or base and inserting the flexible disc (which is of specially prepared vulcanite) in its place, a ring of the flexible vulcanite being also provided on the under side and surrounding 5 the disc so as to press closely against the surface of the gums to prevent the inlet of air when the vacuum is formed. A feature of my Invention consists in preserving the flexible disc from the action of the saliva by coating it with a layer of gold, or other suitable metal placed on each side of the disc before it is vulcanized. 10 In the absence of this protective coating the disc would be liable to rapidly perish., . . . LONDON: Printed by George Edward Eyre and William Spottiswoode, Printers to the Queen’s most Excellent Majesty. 1875.