Specification of Charles Edward Blake : foil for stopping teeth.

  • Blake, Charles Edward.
Date:
1874
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Charles Edward Blake : foil for stopping teeth. Source: Wellcome Collection.

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    Blake's Improved Foil for Stopping Teeth. of Gold Filling for Teeth, whereby said Filling is also rendered more Durable, and also of an Improved Metallic Foil for Dental Purposes,’* and have petitioned Her Majesty to grant unto me, my executors, administrators, and assigns, Her Royal Letters Patent for the same, and have made solemn Declaration that I really believe myself to he 5 the first and true Inventor thereof. NOW KNOW YE, that I, the said Charles Edward Blake, do hereby declare that the following Complete Specification, under my hand and seal, fully describes the nature of my said Invention, and the manner in which the same is to be performed, that is to say:— 10 My Invention relates to improvements in the material or metallic foils which are used in dentistry for restoring and filling decayed teeth, and teeth which have been worn down by grinding or attrition. Numerous substances and compounds have been employed and are still in use for filling decayed teeth, but it is an acknowledged fact 15 amongst the dental profession that pure gold, owing to its quality of being easily condensed and solidified by pressure or percussion, and its unoxidizable and unchangeable nature is superior to any other metal or substance for this purpose. Pure gold, however, owing to its soft character, soon wears away, and to alloy it with other metals in order to 20 give it the desired degree of hardness will generally impair its adhesive properties so that it cannot be properly used as a filling, and besides this, its bright lustre or brilliancy causes a disagreeable glitter in the mouth which it is important to destroy. My Invention consists in combining with the gold the metal platinum 25 either as an alloy or as a mechanical component. Platinum is the only metal that compares with gold in purity, and although not possessing the quality of cold adhesion by percussion when two sheets or foils of platinum are compressed together, yet when sheets of gold and platinum are alternately used and condensed by 30 pressure or concussion a perfect cold welding or adhesion results. In filling or restoring teeth, therefore, I use alternate layers of gold and platinum foil so that the adhesion will be perfect, and a hard and durable filling is obtained. In finishing the filling of the teeth a layer of platinum should be 35 employed, so that the bright color of the gold will be concealed, or