Improvements in disinfecting apparatus / [Bernard McEvoy].

  • McEvoy, Bernard.
Date:
1893
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in disinfecting apparatus / [Bernard McEvoy]. Source: Wellcome Collection.

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    N° 10,348 A.D. 1893 Date of Application, 25th May, 1893—Accepted, 1st July, 1893 COMPLETE SPECIFICATION. Improvements in Disinfecting1 Apparatus. A communication from Bernard McEvoy, of the City of Toronto, County of York, Province of Ontario, Canada, Journalist. I, Alfred Julius Boult of 323 High Holborn in the County of Middlesex, Chartered Patent Agent do hereby declare the nature of this invention and in what manner the same is to be performed, to be particularly described and ascertained in and by the following statement: — 5 The object of the invention is to design an apparatus in which clothing and all kinds of material may be readily and thoroughly disinfected, and it consists, essentially, of a hermetically sealed vessel or chamber designed to contain the material to be disinfected and held at a high temperature and provided with means for exhausting the air from the said vessel, charging it with steam which is 10 afterwards exhausted ; substantially as hereinafter more particularly explained. Figure 1 is a perspective view of the improved apparatus parts being broken away to expose its interior construction. Figure 2 is a cross-section of the disinfecting chamber. Figure 3 is a longitudinal section of one end of the disinfecting chamber. 15 In the drawing A represents a vessel or chamber, preferably cylindrical in form. B is an outer casing surrounding the vessel A, a space a being left between the two. At each end of the vessel A is provided a cover C having simple fastening 20 devices and designed to hermetically seal the ends of the vessel A and the space a. D is a steam boiler. E is a pipe leading from the steam boiler D, to the interior of the vessel A, and F is a pipe leading from the boiler A to the space a a corresponding space 25 being formed in each cover C, so that the steam admitted into one space shall enter and fill all the spaces which surround the body and ends of the vessel. Gr is an air pump provided with a pipe leading to the interior of the vessel A. All the pipes are provided with suitable stop cocks, and drain pipes with suitable cocks are provided wherever necessary. 30 It is preferred to place the vessel A so that its ends shall be in separate chambers in order that the material after it has been carried through the apparatus and disinfected, may be completely isolated from the material waiting to be disinfected. H is a cage suitably constructed to contain the material to be disinfected. This 35 case is preferably carried on a truck in order that it may be readily moved into and moved out of the vessel or chamber A. The operation of the apparatus is as follows ; — The material to be disinfected is placed in a cage Gr which is pushed into the vessel A when the cover is hermetically sealed in position. Steam is then admitted 40 into the space a and w'hen the chamber or vessel A is heated to a high temperature of not less than two hundred and twelve degrees (but preferably considerably higher) the air pump G is started, and as perfect a vacuum as is possible is made in the vessel A. Steam is then admitted into the vessel or chamber A and retained there under pressure for a half an hour, more or less, according to the nature of 45 the article being disinfected. The steam is then cut off and the air pump G again started and as perfect a vacuum as is possible is once more created in the chamber or vessel A. The cover C on the end opposite to that through which the articles wrere placed in the chamber or vessel A is removed and the cage H is -withdrawn [Price 8c£.]