An improved vaporizer or fumigator / [George Cupit Fowler].

  • Fowler, George Cupit.
Date:
1904
Catalogue details

Licence: Public Domain Mark

Credit: An improved vaporizer or fumigator / [George Cupit Fowler]. Source: Wellcome Collection.

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    Fowler s Improved Vaporizer or Fumvjator. 10 15 20 tion and in wliat manner tire same is to be performed; to be particularly described and ascertained in and by tlie following statement; — The invention lias for its object an improved vaporizer or fumigator wliicli will effectually vaporize tlie liquid employed for fumigation without tlie risk of setting nre to or injuring suck liquid wken the latter kas become thoroughly 5 keatea or is vaporizing. My invention is illustrated in tke accompanying drawings, in wkick; — Pig. 1 is a vertical section snowing one lorrn or apparatus. Fig. 2 is a vertical section skewing another metkod of carrying tke invention into effect, and Fig. 3 is a section of part of an apparatus skewing anotker moditication. In carrying tke invention into effect I use an outer sliell a, wkick may be of conical form as skown in Figs. 1 and 3, or of cylindrical form as skown m Fig. 2. Tkis skell a kas perforations or openings it1 as usual to supply air to tke lamp or burner b in tke interior tkereor, and perforations or openings a2 in tke upper part for tke exit of tke lieated air and products of combustion. Tke skell a may further be provided, as skown in Fig. 1, with a crenulated top d6. Tke skell a may simply be placed over tke spirit or other lamp b, or it may have an opening, wkick may be provided witk a door c as shown in p ig. 1, through wkick tke lamp or burner b is inserted. Witk a view to prevent the flame passing to and firing the vapor given oft from the liquid, or hrmg tke contents of the container d, I interpose between tke lamp b and the fluid container d, a diapkragm <e. In PTg. 1 i have skown suck a diapkragm made of perforated metal or wire gauze kxed in position on tke skell a by means of rivets e1 passing tkrougk tke flange e2 of tke diapkragm ey 25 In Fig. 2 I kave skown a solid diapkragm, preferably made of asbestos, resting loosely on a ring / carried by tlie skell a. Wken employing a solid diapkragm I form tke skell a witk outlet openings id below suck diapkragm, in addition to tke openings a2 or crenulated top a3. It will be understood tkat eitker a per¬ forated or solid diapkragm may be used witk tke conical or cylindrical form of the apparatus. Tke top of tke skell a may be surmounted, as skown in Figs. 1 and 2, witk a ling-skaped deflector g for furtker security; or tke deflector <j may be carried by tke container d as skown in Fig. 3. Tke container d is preferably of suck a form, as skown in Fig. 2, to cause tke liquid tkerein to gravitate towards tke centre, and it is preferably provided witk projections or bars h to rest on tke diapkragm e, tkereby preventing tke bottom of tke container coming in contact witk tke diapkragm e and causing tke con¬ tainer d to be carried at a skort distance above tke diapkragm e. Tke projections or bars h may be carried by tke diapkragm instead of by tke container, or tke 40 container and position of tke diapkragm may be so arranged tkat they cannot come into contact witk each other but are situated at a skort distance apart. I preferably arrange tke container at a short distance above tke diapkragm by one of tke methods hereinbefore described, as by so doing there is less risk of setting fire to or injuring tlie fumigating material, but I do not limit the inven- 45 tion to that particular construction as, when the bottom of tke container is in contact with tke diapkragm, tkis latter will to a large extent protect the fumi¬ gating material. In the case of a skell u of cylindrical form the diaphragm 0 may well be carried by tke container d, the container, projections or bars and the diapkragm 5q being rivetted together. N I11 Fig. 2 I kave shown a telescopic skell a made of two cylindrical parts fitting together witk sufficient friction to carry tke upper part at any desired height above tke lamp b, tkereby enabling the lieat transmitted to tke fluid container d to be regulated. If desired one of tke parts may be provided as shown witk a number of small holes cd and tke other part mav be provided 30 35 witk a single hole 55