Specification of James Childs : manufacture of artificial gums.

  • Childs, James.
Date:
1860
Catalogue details

Licence: Public Domain Mark

Credit: Specification of James Childs : manufacture of artificial gums. Source: Wellcome Collection.

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    Childs Improvements in the Manufacture of Artificial Gums. SPECIFICATION in pursuance of the conditions of the Letters Patent, filed by the said James Childs in the Great Seal Patent Office on the 7th April I860. TO ALL TO WHOM THESE PRESENTS SHALL COME, I, James 5 Childs, of Windsor House, Putney, in the County of Surrey, send greeting. WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters Patent, bearing date the Eighth day of October, 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 10 said James Childs, Her special licence that I, the said James Childs, our executors, administrators, and assigns, or such others as I, the said James Childs, 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, 15 exercise, and vend, within the United Kingdom of Great Britain and Ireland, the Channel Islands, and Isle of Man, an Invention for “ Improvements in the Manufacture of Artificial Gums,” upon the condition (amongst others) that I, the said James Childs, my executors or administrators, by an instru¬ ment in writing under my or their hands and seals, should particularly 20 describe and ascertain the nature of the said Invention, 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. NOW KNOW YE, that I, the said James Childs, do hereby declare 25 the nature of the said Invention, and in what manner the same is to be 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 the manufacture of arti¬ ficial gums, and is applicable when what is now known as “ dental rubber ” (a 30 compound of india-rubber, sulphur, and vermillion) is used in this manufacture. In order to obtain a better and more natural color to those parts of the artificial gums which are visible when the gums are in use, a substance or compound is employed for making these parts different from that which is em¬ ployed in making the other or main parts or body of the artificial gums ; thus 35 a compound may be employed for the outer surfaces of the gums, which, although of a good and natural color, is too weak or brittle to be used alone, whilst the main body of the gum is composed of a stronger compound. The introduction of coloring and other foreign matters into dental rubber in all