Specification of James Darsie Morrison : dentistry.

  • Morrison, James Darsie.
Date:
1865
Catalogue details

Licence: Public Domain Mark

Credit: Specification of James Darsie Morrison : dentistry. Source: Wellcome Collection.

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    Morrisons Improvements in Painless Dentistry. 0 ~ * flexible tube and forceps, are of course fitted up in the operating chair or other suitable piece of furniture, and all the rest of the apparatus out of the sight of the patent, and worked in another room. The manner of using the forceps is first to select such forceps or forceps 5 points as will exactly suit the tooth or stump to be extracted, then turning on or off the hot or cold air stop-cocks, so as to allow either hot or cold air to enter the flexible tube till the thermometer stands at blood heat, then placing the forceps points over the tooth to be extracted, but not touching it, gradually increase the cold till the gum is blanched, when the forceps points are to be 10 closed on the tooth, which is extracted with little or no pain to the patient; the air by an arrangement in the points, still blowing on the gum, will be sufficiently near the jaw to blow warmer and warmer air till the gum is restored to the natural state. Having now particularly described my Invention, and the manner in which 15 the same is to be carried out, I do not confine or restrict myself to any par¬ ticular or precise details or arrangements which I have had occasion to describe or refer to, as many variations may be made therefrom without deviating from the principal or main features of my Invention, but what I consider to be novel and original, and therefore claim as the Invention secured 20 to me by the herein-before in part recited Letters Patent is, the improvements in painless dentistry by apparatus for cooling and tempering air, and applying it as an anaesthetic agent by means of the forceps, or other instrument used bringing the tooth or gums into the anaesthetic condition by reducing them by a nice but rapid graduation from blood heat to insensibility, and after the 25 dental operation, by a like graduation restoring them from insensibility to blood heat, and which instrument besides being the anaesthetic channel, is itself continuously and immediately the very instrument for extracting the tooth, thus combining in one instrument the action of a continuous double blow pipe, for anaesthetic application, with the action of an ordinary dental 30 forceps or other instrument for mechanical operation, substantially as herein¬ before described, or any mere modification thereof. In witness whereof, I, the said James Darsie Morrison, have hereunto set my hand and seal, this Twenty-ninth day of June, in the year of our Lord One thousand eight hundred and sixty-five. 35 J. D. MORRISON, (l.s.) LONDON: Printed by Georgs Edward Eyre and William Spottiswoqde, Printers to the Queen's most Excellent Majesty. 1865.