Specification of John Macintosh : setting artificial teeth.

  • MacIntosh, John.
Date:
1860
Catalogue details

Licence: Public Domain Mark

Credit: Specification of John Macintosh : setting artificial teeth. Source: Wellcome Collection.

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    Macintosh's Improvements in Setting Artificial Teeth. WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters Patent, bearing date tbe Eighth day of December, in the year of our Lord One thousand eight hundred and fifty-nine, in the twenty-third year of Her reign, did for Herself, Her heirs and successors, give and grant unto me, the said John Macintosh, Her special licence that I, the said 5 John Macintosh, my executors, administrators, and assigns, or such others as I, the said John Macintosh, my executors, administrators, and assigns, should at any time agree with, and no others, from time to time and at all times thereafter during the term therein expressed, should and lawfully might make, use, exercise, and vend, within the United Kingdom of Great Britain 10 and Ireland, the Channel Islands, and Isle of Man, an Invention for “ Im¬ provements in Setting Artificial Teeth,” upon the condition (amongst others) that I, the said John Macintosh, my executors or administrators, by an instrument in writing under my, or their, or one of their hands and seals, should particularly describe and ascertain the nature of the said Inven- 15 tion, and in what manner the same was to be performed, and cause the same to be filed in the Great Seal Patent Office within six calendar months next and immediately after the date of the said Letters Patent. HOW KNOW YE, that I, the said John Macintosh, do hereby declare the nature of the said Invention, and in what manner the same is to be 20 performed, to be particularly described and ascertained in and by the following statement thereof, that is to say :— This Invention has for its object improvements in setting artificial teeth, and consists in employing for this purpose the preparation known by the name of collodion, which is a solution of gun cotton or fibre in a solvent. 25 The following is the manner in which I prefer to proceed:—I obtain in the usual manner an impression in wax of the form of the jaw of the person for whom the set of artificial teeth is to be made, and from this I make a mould in plaster, as is well understood. Into this mould I again cast plaster, and so obtain in plaster a copy of the original wax impression of the jaw. On to this 30 form I build up in wax or other material a thickness equal to that of the collodion setting which it is desired to produce, and the teeth to be set are embedded in the wax in the same manner as they are to be in the collodion setting; when this is produced on the wax model, and while it is still on the form, it is oiled all over and a plaster cast is taken of it; this when set is 35 removed from the form, and the teeth will be found firmly embedded in it, the whole of the wax is then carefully removed. Thus two plaster forms are obtained, which, when put together, form a mould, and enclose between them a space corresponding in form with the collodion setting to be produced;