Specification of Bristow Hunt : dental drill.

  • Hunt, Bristow.
Date:
1873
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Bristow Hunt : dental drill. Source: Wellcome Collection.

    8/12 (page 6)
    Sunfs Improved Dental Drill. Cleaning, Filling, or otherwise Treating Teeth,” together with the manner in which the same is to be or may be performed or carried into practical effect, I would remark in conclusion that I claim as the Invention communicated to me by the above-named William M. Eeynolds,— 5 Firstly. The handle o with the part made three-sided, a section of which is an equilateral triangle, through which the socket^ turns, as set forth, when used in a dental drill, substantially as and for the purposes set forth. Secondly. The treadle h and fly wheel c in combination with the 10 friction pulley i and upright shaft I revolving in the step constructed and operated for a dental drill, substantially as set forth. Thirdly. The combination of the handle o, upright shaft adjustable rods m, 7^, and flexible joints I and l^ constructed and operated, sub¬ stantially as set forth. 16 And, fourthly. The general construction and action of the mallet and its employment for the purposes set forth, substantially as above described and as illustrated on the accompanying Drawings. In witness whereof, I, the said Bristow Hunt, have hereunto set my hand and seal, this Tw^enty-fourth day of January, in the 20 year of our Lord One thousand eight hundred and seventy- three. BRISTOW HUNT, (l.s.) LONDON: Printed by George Edward Eyre and William Spottiswoode, Printers to the Queen’s most Excellent Majesty. 1873.