Specification of George Haseltine : inhaling apparatus.

  • Haseltine, George.
Date:
1873
Catalogue details

Licence: Public Domain Mark

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

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    Specification. Haseltine's Improved Inhaling Apparatus. unto me, my executors, administrators, and assigns, Her Royal Letters Patent for the same, and have made solemn Declaration that it has been communicated to me from abroad by Clifton David Hunter, of Marlborough, Massachusetts, United States of America. NOW KNOW YE, that I, the said George Haseltine, do hereby declare 5 that the following Complete Specification, under my hand and seal, fully describes and ascertains the nature of the said Invention, and in wliat manner the same is to be performed, in and by the following statement, reference being had to the accompanying Drawing making part of this Specification :— 10 Vapor inhalers as heretofore constructed are objectionable for the reason that the act of blowing or breathing down the exhaust or inhaling tube will cause the liquid in the main receptacle to rise in the inlet tube and flow into the acid vessel, thus destroying the power of the acid and necessitating the emptying and re-supplying of the main 15 receptacle and the acid vessel. The first part of this Invention has for its purpose to overcome this difficulty, and consists in the application of a valve to the exhaust tube or passage or to the inlet tube, which valve will instantly close should any person inadvertently breathe or blow into the exhaust tube, thus 20 preventing the rising of the liquid in the main receptacle into the inlet tube and mixing with the contents of the acid vessel, the valve also prevents the evaporation of the volatile portion of the liquid in the main receptacle. The acid vessel has heretofore been connected with the inlet tube and placed either inside or outside of the main receptacle, and 25 was consequently extremely liable to be injured or broken. The second part of this Invention consists in placing the acid vessel within a cavity or recess within the stopper of the main receptacle, whereby the danger of breaking the acid vessel is avoided. The third part of the said Invention consists in providing the stopper 30 of the main receptacle with a groove or recess for the reception of the upper portion of the inlet tube when forced down, whereby it is pro¬ tected from injury. The inlet tube is so constructed and arranged that when disconnected from the acid vessel and swung around, its end when