Specification of George Fellows Harrington : artificial teeth.

  • Harrington, George Fellows.
Date:
1857
Catalogue details

Licence: Public Domain Mark

Credit: Specification of George Fellows Harrington : artificial teeth. Source: Wellcome Collection.

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    Harringtons Improvements in the Manufacture of Artificial Teeth, Qc. NOW KNOW YE, that in compliance with the said proviso, I, the said George Fellows Harrington, do hereby declare that the nature of my said Invention, and the manner in which the same is to be performed, are fully described and ascertained in and by the following statement thereof, reference being to the Drawings hereunto annexed, and to the figures and letters 5 marked thereon, that is to say:— My Invention consists :— First, of improvements in the manufacture of artificial teeth when what are called mineral teeth are used. Secondly, my Invention consists of improvements in the manufacture of the 10 beds and palates for teeth and artificial palates where no teeth may be required by the application of tortoiseshell. And, Thirdly, my Invention consists of improvements in the machinery or apparatus employed in the making of beds or palates for teeth. And in order that my Invention may be most fully understood and readily carried into 15 effect, I will proceed to describe the means pursued by me. Heretofore in manufacturing mineral teeth in sets or large pieces it has been usual to take a cast of the mouth or part thereof of a patient, and to obtain therefrom a model of the mouth or parts thereof, whether for the upper or lower gums, and this model is handed to the maker of mineral teeth, 20 in order that he may make the teeth in accordance therewith, and the workman makes the teeth with the surfaces which come next the gums as nearly as may be to fit the gums, and formerly such teeth were made without the interposition of beds or palates of gold or other material, but in modern practice it has been usual for the makers of artificial 25 teeth to employ gold (and in some instances other materials) as beds and palates for such teeth, and thus are sets or parts of sets of artificial teeth made. Mineral teeth, heretofore, when to be combined with beds or palates, have been made in like manner from the model of the mouth and the parts or surfaces thereof which were to come next the gums have been made in 30 accordance with the model of the interior of the mouth, and suitable to fit the gums of the patient, and the gold to form the bed or palate has been stamped into form, according to a model of the mouth obtained as before explained from the particular patient for whom the set of teeth are intended. The mineral teeth and the gold, having been made both to correspond with the mouth, they 35 have had to be combined together, and this has been done by cutting away the surface of the mineral teeth which is to come next the bed or palate of gold, such cutting away requiring careful and accurate workmanship, and which is more or less difficult, depending on the varied undulations in the gums or