US2429708A - Hand pump atomizer - Google Patents

Description

Oct. 28, 1947. c. w. CHERRY 2,429,708

HAND PUMP ATOMIZER Filed Aug. 13', 1943 3 Sheets-Sheet l Oct. 28, 1947. c. w. CHERRY HAND PUMP AToMIz ER Filed Aug. 13 1943 3 Sheets-Sheet 2 Patented Oct. 28, 1947 UNITED STATES PATENT OFFICE HAND PUMP Aro ynznn Ca l W- Ch rr Ca a ifa ass ns t l i lu L- h l s, San Fr cis q. G

Appli t n August 1 4.3 Serial :NQ, .9.8.468

4 C ams.- 1

My invention relates to certain new and useful improvements in spraying devicesand pa-rtic-- burns with -a protective coating where the need is urgent and especially where any suitable means for heating the spraying medium, such as medicated wax, :is not available.

To that end my invention in its preferred form consists of a container or cartridge comprising two or more compartments, one of which contains the medicated wax and another of whichcontains a heat generating element, ,such as quick lime or any one of a number of well known elements, which upon exposure to the air or moisture will generate sufficient heat to melt the Wax and keep it sufficiently fluid and warm for a sufficient time to effect the spraying operation.

The cartridge element of my invention is so constructedand fitted withtubes, a bracket, etc. as hereinafter described, as to be readily combined with a source of air under pressure, such for example as a hand operated air pump that upon application of the air under pressure, as by actuation of the air pump, there will be an atomizer action whereby the melted wax is discharged in a fine spray.

These cartridges are so constructed as to be readily detachable from the air pressure mechanism. Consequently, if the contents of .one cartridge is not sufficient. to meet .the requirements of a given spraying operation, a second cartridge can be heated while the contents of the first cartridge is being sprayed, so that when one cartridge is exhausted it can be readily detached from thehand pump, or other source of air under pressure, and replaced by the second cartridge which is ready for the continuation of the sprayingoperation. This operation is feasible, for when using medicated wax in the inner compartment and quick lime in the outer compartment, I have found that the wax will be heated to a sufiiciently fluid condition in about three minutes and will be held in that condition for over an hour.

Referring now to the drawings:

Fig. 1 is a view of one form of my invention assembled with an air pump, viewed looking down.

Fig. 2 is .a sideelevationof the structure shown in Fig. 1.

Fig. .3 is an endelevation of the same embodiment, looking from the left end of Figs. 1 and 2.

Fig. ,4 is -a detail view .in perspective of the bracketelement shown in the preceding figure.

Fig. 5 is a View in perspective showing the bracket secured to .a conduit leading to a storage tanker other source of air under pressure.

Fig. :6 is e. vertical section through the cartridgeon line .G... 6 of Figs. 1 .and 2, looking in the direction indicated by the arrows.

'Fig. 7 .is .a .cross-. section through theca-rtridge on the line la-10f Fig. 3, viewed in the direction indicated .by the arrows.

Fig. .8 .is afragmentary plan view of the top of acartridge.

Figs. 9 ,and 10 are sectional views similar to Fig. 7, but'illustrating cartridge elements of alternative structure.

Referring first to Figs. 1 -to.8, inclusive, of the drawings: A is the outer container, such as a 1116122110841. B is the inner container. C 'is a spray tube extending from outsfde of the outer container ;A to a -point near the bottom of the ,inner ontainer 513. C is secured as by soldering a th Poin -wher it pa s s through the inner c jsainergandtheputercontainer. 'D is a vent tubeppening at-one end into the inner container an a the o e end hro the outer ntaine and sec r d :to h containers a by solder.. :E is a stay rod, preferably, but not necessarily, used,-;which,connects the inner con- .tain'er and outer container andserves to support the inner :container against displacement zin'its relationto theouter container. This stay arod may be ,solid .or hollow.

TFOI reasons hereinafter specified, the rod E and tubes .6 and :D :are preferably secured 'to ethe :inner container by means, such as solder, which is preferably softer than the solder or -other :means used 'to secure them to the outer .container. :While this .arrangement is prefer- "able "for reasons'hereinafter explained, it is not essential. :a convenient means for securing theibracket .(Fig. 4) to1the .outer containerI pro- .vide'two holes 'Fzin the top of the outer con- Etainer, which are :preferably offset.

Whileit is necessary that there shall .be an opening at a suitable point in the outer container, through which an activating element, .such .as .water, maybe supplied to the outer container 6.110 activate .the :heat producing means .contained in the-outer container, such an open- :ingmay beprovided at .any convenient spot and the outer .containeri may :be provided with means other than the holes F for connecting the bracket (Fig. 4). The arrangement shown in the drawings, however, is a convenient means, both for providing access to the interior of the outer container and for attaching the bracket G, which will now be explained.

The bracket G consists of a lateral flange g and a vertical flange g. The lateral flange is provided with an opening h while the vertical flange i provided with an opening i, in line with the opening it.

To the lateral flange are oppositely arranged spring clips 1 on opposite sides of the opening 72..

In applying the bracket to the cartridge the central opening h is fitted over the protruding end of the spray tube C. Then, by turning the bracket about the protruding end of the tube C the free ends of the spring clips 7' On the under surface of the bracket G will first enter the holes F (Fig, 8) and as the turning movement is continued will spring under the top surface of the outer container A until the limit of movement is reached. Then, by any convenient means, such as a Wedge of any available material or even by means of suitable shoulders on the clips :i, the reverse movement of the bracket which would result in its detachment from the outer container A will be prevented. When the clip is so attached the opening 1 in the vertical flange of the bracket G will be above and in operative relation with the projecting end of the spray tube C, so that when the back of the bracket is connected with an air pump or is brought otherwise into operative relation with any source of compressed air, the jet of air will be forced through the opening 2' so as to cooperate with the projecting end of the spray tube C, thereby operating as an aspirating atomizer to withdraw the melted wax from the inner container and discharge it, in the form of an atomized spray, to provide the protective coating previously described.

The outer container is charged with the heat generating element. Normally, when the device is ready for use the outer container will always contain this charge of the heat generating element. To provide for expansion, as where quick lime is used, the outer container will be charged with quick lime for only a part of its capacity. For example, the quick lime may extend to the dotted line KK (Figs. 6 and '7). Preferably the inner container is 50 mounted as to extend more nearly toward the bottom of the outer container than toward its top. This is shown in Fig. 7. When water is added to the quick lime the resulting reaction will not only generate heat but will expand the quick lime. This expansion may develop pressure against the bottom of the inner container, tending to force it upwardly'o-n the spray tube C. While it is possible to make the parts of such strength that the connections which support the inner container within the outer container may effectively resist any such pressure, I prefer to so mount the parts that the inner container will readily yield to such pressure. To that end the spray tube C must be mounted in such relation to the inner container that the lower end of the spray tube will always be sufficiently out of contact with the bottom of the inner container to permit the free flow into the spray tube of the melted wax.

Also I refer to secure the connections between the outer and inner container at the points where they connect with the inner container by means, such as soft solder, which under the influence of pressure and heat will yield, thereby permitting a sliding relation between the inner container and those supports, including the spray tube C, the vent tube D and the stay rod or tube E.

Under these conditions the inner container will be forced upwardly to a position such as that indicated by the dotted lines LLLL, but will maintain a sliding relation with the connecting tubes sufliciently tight for all operative purposes. Then, when the air jet is projected through the opening i in the upper flange g in the bracket G, the contents of the inner container will be sprayed as desired while, if necessary, other carbridges are being heated.

When the spraying from one cartridge is completed it may be readily detached from the bracket G and a freshly heated cartridge substituted.

Fig. 5 of the drawings illustrates a modified embodiment of my invention with respect to the atomizer bracket. In locations, such as hospitals, where compressed air from compressors or stor-- age tanks may be available, the hand pump 0 can be eliminated and more continuous operation achieved by connecting the atomizer hole of the bracket with such source of compressed air,

The illustration in Fig. 5 shows a rear perspective of the bracket, to which, as there illustrated, is welded the end of a metal tube M, connecting by means of a tube or hose N with a compressed air tank or other source of air supply under pressure, The flow of air through the conduit M may be controlled by any suitable valve. The button or trigger m herein shown provides manual control of the air valve in said conduit M.

While the bracket G is shown in Figs. 1, 2 and 3 as welded to the closed end 0 of a pump cylinder 0, obviously any conventional means of coupling a chamber containing compressed air with the atomizer opening in the bracket G may be used.

It is contemplated that for the particular use above specified the individual cartridges shall be relatively small so that one cartridge will be sufficient to treat the smaller burns requiring a wax spray. The cartridges for such use will be put up sufiiciently charged with medicated wax and with an inert heat generating medium hermetically sealed in any convenient way. In this connection the openings F-F and D may be provided with punch-out closures, or they may be closed by applying adhesive tape thereon or by the use of any form or" removable plugs. The container for the quick lime or other chemical must be kept hermetically sealed until such time as the material is to be sprayed in order to prevent premature chemical reaction. The spray device is packed in compact form, as in the individual soldier's or sailors first aid kit, so as to be ready for immediate use without delay incident to carrying the patient to a distant location from the point where the burns have been incurred.

Referring now to the modified cartridge elements shown in Figs. 9 and 10: The spray tubes designated C in both modified embodiments are unyieldingly attached, as by hard solder. to both the inner and the outer containers AB'. The portion of each spray tube which intervenes between the inner and outer containers of the cartridge is formed with a loop, adapted to yield under pressure exerted by the heat generating chemical when water has been applied thereto. In Fig. 9 the yielding loop is in the form of U, the sides of which are pressed toward each other whenthe inner container is forced upwardly. In Fig. 10 the yielding portion of the spray tube is in the form of a closed loop which is flexed outwardly to expand the loop when the inner container is forced upwardly.

From the foregoing it is clear that my invention comprises the provision of a chamber containing a medium to be sprayed in a heated condition in heating relation with a chamber containing a normally inert heat generating material which, upon exposure to the air or moisture, will generate heat sufficient to heat the spraying medium to the extent desired, all in combination with an atomizer mechanism whereby in the manner'described a heated spray may be produced and applied and preferably the container shall be normally separated from the atomizer mechanism so as to be readily attached and detached.

While I have described my invention as particularly designed and adapted for emergency use in the treatment of burns, especially in com-- pact form suitable for packing in a soldiers or sailors kit and ready for immediate use where means for melting the wax in common use are not available, yet it is obvious that it is not only useful for the treatment of burns in hospitals or elsewhere but it is useful for applying heated spray wherever desired, regardless of Whether the spraying medium is or is not solid, like wax, at normal temperatures.

With this understanding it is clear that the particular mechanisms described are more or less arbitrary and may be varied without departing from the spirit of my invention, which contemplates the use of such variations.

Thus for convenience instead of providing openings through which to add fluid the outer container may be made,sufficiently thin at certain portions so that when desired a hole may be punched through which fluid may be admitted.

Or some well known compound may be used in which the heat generating reaction may be started by applying a low heat as, for example, the heat of a match at a suitable point on the exterior of the outer container.

Any substance which while normally inert and dry will, upon the addition of an activating element, such for example as air, water, or the like, or initial heating without ignition, will develop a reaction whereby sufiicient heat is generated to heat the material to be sprayed, is, for the purposes of my invention, a heat generating material and I have so referred to it in the claims. For convenience, I have referred to the material to be sprayed as spraying material.

I claim:

1. The combination of an outer container for heating material, of an inner container for spraying material mounted within said outer container, a spray tube extending from the interior of the innerrcontainer through the wall of the outer container, a vent leading from the inner container through the wall of the outer container, atomizer connections in operative relation to the projecting end of the spraying tube and means for supplying fluid pressure to the atomizer connection whereby the spraying material will be discharged in a spray from the projecting end of the spray tube, the supporting connection between said containers being secured to the inner container by means which will yield under heat and pressure developed by operation of the device, so as to permit the inner container to yield to such pressure by sliding along such connections.

2. The combination of an outer container charged with heat generating material, of an inner container charged with material to be sprayed, said inner container being mounted within said outer container, a spray tube extending from the interior of the inner container through the wall of the outer container, a vent tube leading from the inner container through the wall of the outer container, of atomizer connections in operative relation to the projecting end of the spraying tube, means for supplying fluid pressure to the atomizer connection whereby the spraying material will be discharged in a spray from the projecting end of the spray tube, said spray tube serving as a connection to yieldingly suspend the inner container within the outer container.

3. The combination of an outer container charged with normally solid heat generating material of an inner container charged with spraying material and mounted within said outer container, a spray tube extending from the interior of the inner container through the wall of the outer container, a vent tube leading from the inner container through the wall of the outer container, atomizer connections arranged exterior of both containers and in operative relation to the projecting end of the spraying tube, and means for supplying fluid pressure to the atomizer connection whereby the spraying material will be discharged in a spray from the projecting end of the spray tube, said inner container being supported within the outer container by means which will yield under heat and pressure developed by the generation of heat in the outer container.

4. The combination of an outer container charged with normally solid heat generating material of an inner container charged with a normally solid medicament and yieldingly suspended within said outer container, a spray tube extending from the inertior of the inner container through the wall of the outer container, a vent conduit leading from the inner container through the wall of the outer container, atomizer connections arranged exterior of both containers and in operative relation to the projecting end of the spray tube, and means for supplying fluid pressure to the atomizer connection whereby the medicament when heated will be discharged in a spray from the projecting end of the spray tube.

CARL W. CHERRY.

REFERENCES CITED UNITED STATES PATENTS Number Name Date 627,146 Shepard June 20, 1899 720,434 Jewett Feb. 10, 1903 1,269,122 Saile June 11, 1918 1,285,788 Pierce et a1. Nov. 26, 1918 1,632,515 Smith June 14,1927 1,641,023 Coffey Aug. 30, 1927 1,751,387 Bielek Mar. 18, 1930 1,944,108 Robinson Jan. 16, 1934 1,971,364 Zimmer Aug. 28, 1934 2,300,793 Martin Nov. 3, 1942 FOREIGN PATENTS Number Country Date 12,804 Australia Apr. 16, 1928 113,177 Great Britain Feb. 4, 1918 125,921 Switzerland June 1, 1928 175,745 Switzerland May 16, 1935 703,064 France Apr. 23, 1931

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