Specification of George Davies : respiratory apparatus.

  • Davies, George.
Date:
1864
Catalogue details

Licence: Public Domain Mark

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

    6/12 (page 4)
    Davies Improved Respiratory Apparatus. The uses which may be made of this respiratory apparatus are very numerous, the principal of which may be enumerated as follows Firstly, as an apparatus permitting of the extinction of fires at their beoinnino’ as it is verv portable, and a quarter of a minute suffices to adjust the same. Numerous experiments have demonstrated that a person oan stay 5 without danger a very long time in the most intense smoke, and in a very high temperature. Secondly, for marine purposes, beside the use that could be made of it in case of fire, it will be useful in the stopping of leaks and exterior repairs. Thirdly, for descending into wine or beer vats, or other similar vessels. 10 Fourthly, as an apparatus for the diver, well sinker, miner, or other similar purposes. Fifthly, for entering and staying without danger in places charged with deleterious gases, especially that used for lighting purposes. Sixthly, for carrying on without danger to the health of the workmen such 15 trades or occupations as are unhealthy or dangerous. Seventhly, for entering and staying without danger any required length of time in the suffocating gas of cesspools. Eighthly, for taking ordinary or medicinal baths, because it permits a complete immersion during the whole time of the bath, which exercises thus 20 an equal temperature and an equal pressure on all parts of the body. Vapor baths also will be rendered more efficacious by its employment, because the patient being able to breathe the external atmosphere, the body can support a much higher temperature. Such being the nature and object of the said Invention for An Improved 25 Respiratory Apparatus,” I will now proceed to describe more in detail the planner in which the same is to be or may be performed or carried into practical effect, and in order that the same may be distinctly understood I have annexed hereunto a Sheet of Drawings illustrative thereof, and have marked the same with figures and letters of reference corresponding with 30 those in the following explanation thereof, that is to say 2—. In the annexed Drawing Figures 1, 2, and 3 represent longitudinal and transverse sections and plan view of the mouth-piece A ; this piece, which is made of wood, bone, or ivory, is provided with two tubular projections a and a1, to which are adapted the india-rubber tubes c and o\ of a length determined 35 by the application which it is proposed to make of the apparatus. The tube e, fop example, serves for inspiration, and the tube cl for expiration; they com- mnnicate, both of them, with respirable atmospheric air. Fhe planner of using this apparatus is as follows:—The operator compresses