Specification of George Davies : inhaling apparatus.

  • Davies, George.
Date:
1864
Catalogue details

Licence: Public Domain Mark

Credit: Specification of George Davies : inhaling apparatus. Source: Wellcome Collection.

    7/10 (page 5)
    5 _Davies' Improvements in Inhaling Apparatus. action, the steam disengaged in the vessel C escapes by the tube D and blows over the orifice of the tube H, carrying with it the liquid from the vessel G in the form of an impalpable powder. In the vessel containing the steam a thermometer E is plunged, in which, 5 when the apparatus is working properly, the surface of the column of mercury oscillates between the points 1 and 2, but when this height is exceeded, the temperature must be lowered immediately by diminishing the intensity of the flame of the lamp B by means of the screw B1. The small spirit lamp L is used to heat the liquid to be vaporized when necessary. 10 Having now particularly described the nature and object of the said Invention for “Improvements in Inhaling Apparatus,” 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 Emile Siegle, of Stuttgart, Wurtemburg,) the 15 general construction and arrangement of the inhaling apparatus, as above described and exhibited in the Drawing annexed. In witness whereof, I, the said George Davies, hath hereunto set my hand and seal, this Twenty-first day of October, in the year of our Lord One thousand eight hundred and sixty-four. 20 GEORGE DAVIES. (l.s.) LONDON: Printed by George Edward Eyre and William Spottiswoode, Printers to the Queens most Excellent Majesty. 1864. N