Specification of William Hills Kitchen : producing artificial respiration.

  • Kitchen, William Hills.
Date:
1866
Catalogue details

Licence: Public Domain Mark

Credit: Specification of William Hills Kitchen : producing artificial respiration. Source: Wellcome Collection.

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    Provisional Kitchen's Improved Apparatus for Producing Artificial Respiration. The arrangement which the Inventor proposes to adopt in carrying out the objects set forth as above is first to insulate the whole of the body of the person using the apparatus in an air-proof chamber, which he desig¬ nates by the name of an anti-sedentary couch, made sufficiently strong to bear a certain amount of atmospheric pressure. The said couch may be 5 made of wood coated with an air-tight composition, or may be made of gutta percha or indian-rubber supported by a suitable framing, or may be made of iron or other suitable air-tight material. In this couch are fitted two chambers going under the respective names of the inhaling and exhaling chambers, the air in which is put in connection with the 10 respiratory organs of the person using the apparatus by means of two tubes leading through a valve under the control of the person within the couch to a mouth-piece which is placed in the mouth. The inhaling chamber is put in connection with the external air by means of a valve. A com¬ munication is effected between this chamber and the couch by means of 15 another valve, while the couch itself communicates with the exhaling chamber by means of a third valve. If it is desired that the pressure of the air within the couch shall fall no lower than that which is required for inhalation by the person using the apparatus, the valve in the inhaling chamber is removed, and the respiratory organs are thereby put in direct 20 communication with the external air. The pressure of the air in the couch is prevented from falling below a certain point, or is regulated by so graduating the valves above mentioned between the inhaling chamber and the couch and the couch and the exhaling chamber, and by so withdrawing the air from the exhaling chamber by means of an air pump or other 25 apparatus attached to the exhaling chamber that the two valves above mentioned will always be in equilibrium. In order to produce a complete exhalation, the medium into which the exhalations takes place should not exceed in pressure the air in the couch. The valve leading from the exhaling chamber to the couch is graduated in weight so that the air 30 within shall not fall below a certain pressure. The mouth-piece being placed in the mouth, the exhaling chamber is so reduced by continued rarefication by an air pump or otherwise, as stated above, that its valve is always kept in equilibrium, the valve leading from the couch to the external air being likewise kept in the same state. The person in the 35 couch closes his nostrils and opens a tap or valve, so that the mouth-piece is put in communication with the ex'ernal air when an inspiration is made. If it is desired that the medium into which the expirations take place shall not fall below that which surrounds the external surface of the chest, the