Improvements in apparatus for generating and applying fumes, smoke or vapours for disinfecting, deodorizing or fumigating purposes, or for the testing of pipes or passages by what is known as the smoke test, or for analogous purposes / [John Watts].

  • Watts, John.
Date:
1893
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in apparatus for generating and applying fumes, smoke or vapours for disinfecting, deodorizing or fumigating purposes, or for the testing of pipes or passages by what is known as the smoke test, or for analogous purposes / [John Watts]. Source: Wellcome Collection.

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    N° J 8,317 A.D. 1892 Date of Application, 13th Oct., 1892 Complete Specification Left, 13th July, 1893—Accepted, 19th Aug., 1893 PROVISIONAL SPECIFICATION. Improvements in Apparatus for Generating* and Applying Fumes, Smoke, or Vapours for Disinfecting, Deodorizing, or Fumigating Purposes, or for the Testing of Pipes or Passages by what is known as the Smoke Test, or for analogous purposes. I John Watts of Broad Weir Engine Works in tlie City and County of Bristol Engineer do hereby declare the nature of the said invention to be as follows :— My invention relates to apparatus for generating, and applying, fumes, smoke, or 5 vapours, for disinfecting, deodorising, or fumigating purposes. It is intended more especially however for testing pipes, or passages, bv the smoke test; that is,, by forcing smoke thereinto so that its escape reveals any leakage therefrom. My said invention has for its object to provide an apparatus in which the matter from which the fumes, smoke, or vapours, is, or are, generated can be ignited and got 10 ready for use without escape of smoke, fumes, or vapour, from the apparatus (when taken into the place where it is to be used) except when and where desired. The apparatus is provided with a pump, or air forcing device, by which, when the apparatus is in use, air is forced into a chamber from which sufficient of the said air to support combustion passes through a small opening, or small openings, to the 15 smouldering material, air also passing from the said chamber through another opening controlled by a weighted, or equivalent, valve, so that when the air in the said chamber has attained a sufficient pressure it opens the said valve and passes from the said chamber to meet the smoke, fumes, or vapours, passing from the combustion chamber and carry it, or them, down, through a space, to the outlet, to 20 which a hose and nozzle, or other suitable device, may be attached for leading the smoke or the like, to the place where it is to be ejected the outlet being provided with a valve which is closed when the apparatus is not in use. The combustion chamber and air and smoke passages, which are arranged around it, are all covered in by a cover having a rim which enters a groove at the top of the outer casing so 25 as to form a liquid seal for the said cover. In order to explain more clearly the nature of my invention I will describe more particularly an arrangement according thereto ; premising however, that I do not limit myself to the precise details which I shall describe. The apparatus consists of an outer casing separated into compartments by a 30 diaphragm the lower compartment constituting a compressed air chamber, and the upper compartment containing the combustion chamber in which is the smouldering material. This chamber is supported upon a tray which forms its bottom, the said tray having in it a conical orifice, or short pipe, which fits over a conical piece at the upper end of a pipe which opens into the compressed air chamber, the top of 35 the last named pipe being closed except for a small opening, or openings, of such size as to pass enough air to supply the smouldering material in the combustion chamber. The last named pipe, at the portion between the bottom of the combustion chamber, and the top of the compressed air chamber, acts as a guide for a weighted ring-valve, which normally covers an opening, or openings, in the diaphragm, which 40 when the air in the compressed air chamber reaches a sufficient pressure to raise the valve affords or afford a passage for air which passes up outside the combustion chamber and then, meeting the smoke, or the like, therefrom carries it down to the outlet from the casing to the hose and thence' to the place where the smoke, or the like, is to be used. To enable this to be done the outer casing, which 45 encloses the space in which the combustion chamber is placed, is covered by a cover with a water seal joint as before explained. A cylinder extends from the [ Price 8d.J