Specification of Alfred Vincent Newton : instruments for extracting teeth.

  • Alfred Vincent Newton
Date:
1858
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Alfred Vincent Newton : instruments for extracting teeth. Source: Wellcome Collection.

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    Newton's New Combination of Instruments for Extracting Teeth. quantity helix or coil, and connected with the battery, and the other an intensity helix or coil, and to be connected with the body of the patient. Instead of using a little electro-magnet break circuit in the first helix, as shown in the Drawing, a clockwork break circuit or electrotome may be used, or a rasp may be used in connection with the aid of an assistant for breaking 5 and closing the circuit. So also there are several forms of magneto-electric machines in which permanent magnets are used to induce by mechanical action a magneto-electric current in a coil surrounding a revolving soft iron armature. In all these cases the same peculiar effect on the nerve of the patient’s tooth would result if either of these machines were combined with 10 the forceps, inasmuch as they are all well known to be equivalents in applying electricity to the body for medical purposes. A direct current from the battery might also be combined with the forceps, and with the aid of an interposed break circuit the same effect would take place to a great degree, although the use of such a battery of the proper intensity would probably be 15 found much more inconvenient than the magneto-electric (or, as they are sometimes called, the electro-magnetic) machines above named. So also, instead of a metallic conductor from the magneto-electric or other battery, the body of the operator might be employed, he taking hold of the negative pole with his left hand, and grasping the forceps with his right hand. 20 Having thus set forth the nature of the Invention of “A New Com¬ bination of Instruments for Extracting Teeth,” as communicated to me by my foreign correspondent, and explained the manner of carrying the same into effect, I wish it to be understood that under the above in part recited Letters Patent I claim, the combination of the magneto-electric or electro- 25 magnetic machine, or its equivalent, with the dental forceps for removing teeth without pain, arranged and operating substantially in the manner above described. In witness whereof, I, the said Alfred Vincent Newton, have hereunto set my hand and seal, the Tenth day of September, in the year 30 of our Lord One thousand eight hundred and fifty-eight. A. V. NEWTON, (l.s.) Witness, J. W. Moffatt, 66, Chancery Lane. LONDON: Printed by Geokge Edwaed Eyee and William Spottiswoode, Printers to the Queen’s most Excellent Majesty. 1858.