Specification of Peter Headridge : dentistry.

  • Headridge, Peter.
Date:
1869
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Peter Headridge : dentistry. Source: Wellcome Collection.

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    10 15 20 25 Specification. A.D. 1869.—N° 1101. 5 Headridge’s Improvements in Dentistry. sections, and using springs B to expand them, which is new and never before used for dental irregularities. Also my appliance claims for itself much more comfort to the wearer inasmuch as it causes no pain or irritation, or takes up any unnecessary room in the mouth like the present method of treating dental malformations. IMy improvements are illustrated by the accompanying Drawings. Pig. 1 shews upper plate A in two sections. Pig. 2, the sections A united by means of a double curved spring (see spiing B, No. 1) fitted to the front of the palate so as to exert greater pressure on the front of the mouth. ^ shews sectional plate united by means of two curved springs (see B, No. 2) fitted across the centre of the palate to exert greater pressure on each side of the mouth. lower plate shewn in three sections, these sections are united by a curved spring, as seen in Pig. 5. Having thus described the nature and objects of my Invention I declare that what I claim and desire to be secured to me by the herein¬ before in part recited Letters Patent is,_J Pirst. Dividing the base or plate into sections. Second. Giving these sections elasticity to follow the expansion of the maxillary by means of springs or other elastic substances. In witness wheieof, I, the said Peter Headridge, have hereunto set my hand and seal, this Ninth day of October in the year of our Lord One thousand eight hundred and sixty-nine. PETER HEADRIDGE. (l.s.) LONDON: Printed by George Edward Eyre and William Spottiswoode, Printers to the Queen's most Excellent Majesty. 1869.