Improvements in dental engines / [William Perry Horton].

  • Horton, William Perry.
Date:
1893
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in dental engines / [William Perry Horton]. Source: Wellcome Collection.

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    N° 6057 A.D. 1893 Date of Application, 21st Mar., 1893 Complete Specification Left, 15th June, 1893—Accepted, 15th July, 1893 PROVISIONAL SPECIFICATION. [Communicated from abroad by William Perry Horton, Junior, of 106, Euclid Avenue, Dentist, and Ansel. B. Jones, of 757, Scovill Avenue, Electrician, both in Cleveland, Ohio, United States of America.] Improvements in Dental Engines. I, Henry Harris Lake, of the Firm of Haseltine Lake & Co. Patent Agents, 45 Southampton Buildings, in the County of Middlesex, do hereby declare the nature of this invention to be as follows : — This invention relates to dental engines, and its principal object is to provide a 5 dental engine, in which the burr and burr-operating shaft revolves, with means whereby a current of electricity may be passed through said shaft and burr thereby deadening the nerve and counteracting the pain incident to boring into a tooth. To this end the invention consists in certain peculiarities in the construction, arrangement and combination of the several parts substantially as hereinafter 10 described. The improved dental engine comprises the usual standard, the burr actuating shaft, and the burr on the end of said shaft. The burr actuating shaft is divided transversely and its sections connected by a flexible piece or shaft whereby the burr may have its necessary freedom of movement in every direction, but it is 15 obvious that the shaft may be otherwise constructed for this purpose. The rear end of the shaft has its bearing in an arm which has a sleeve at its lower end fitted upon and rigidly secured to the upper end of the standard or support. A pulley mounted upon the rear end of shaft adapts said shaft for con¬ nection with a suitable means for operating it, a suitable source of electricity is 20 provided, one pole of which communicates by a wire with the dental engine in the manner hereinafter described, and the other pole by another wire with a suitable electrode, the latter being intended for application to the external part of the jaw, or to the head or body of the patient. As will be seen, the apparatus for producing the electricity, consists of an electric 25 battery of the ordinary type, but I contemplate using, in practice, one in which the strength of current applied to the engine can be regulated to suit the demands and exigencies of special cases. In practice I preferably connect the positive pole of the apparatus with the dental engine and the negative pole with the electrode ; the latter should preferably be placed in juxtaposition to the nerve or tooth to be 30 operated upon. It is not broadly new with me to pass a current of electricity through a dental tool so as to deaden the nerve of the patient in advance of the operation of the tool, but heretofore this princinle has been employed only in connection with tools which do not rotate, and the wrire extending from a pole of the battery has been 35 secured directly to the excavator. This would obviously be impracticable in dental engines in Avhich the tool rotates, and I have therefore devised the construction now to be fully set forth which makes the principle above mentioned applicable for use with any of the modern dental engines with but slight changes in the construction thereof. 40 As above stated the actuating shaft is supported at its rear end by an arm which in turn is supported by the standard or support said arm having a horizontal opening through which said shaft extends and within which it is journalled. Secured to the standard or to the afore mentioned sleeve by any suitable means as for example (another sleeve) fitted closely thereto and projecting upwards 45 opposite the arm above mentioned, is a second arm which is in contact with the [Price 8J.]