US2465274A - Atomizing device - Google Patents

Description

H. B. RUDD ATOMIZING DEVICE March 22, 1949.

2 Sheets-Sheet 1 Filed Nov. 2, 1940 I INVENTOR HARRY a. RUDD W, M 9- M ATTORNEYS H. B. RUDD ATOMIZING DEVICE March 22, 1949.

Filed Nov. 2, 1940 III.

III/II INVENTOR HARRY B. RUDD W, M M ATTORNEYS Patented Mar. 22, 1949 UNITED STATES TENT OFFICE viil Manufacturing Company,

Waterbury,

Conn, a corporation of Connecticut Application November 2, 1940, Serial No. 363,979

6 Claims.

My invention relates to devices readily and conveniently operable for atomizing a liquid medium or for ejecting a liquid stream from a nozzle in non-atomized condition.

My invention, in one of its prominent aspects, relates to an atomizing device wherein a liquid medium is drawn into a chamber in response to movement of a wall of said chamber, the liquid medium being forced through an atomizing orifice communicating with said chamber either by reverse movement of the chamber wall, by passage of a jet of air through said atomizing orifice or by both of the actions last described.

My invention, in another important aspect thereof, relates to an atomizing device comprising a chamber in which a charge of a liquid medium is temporarily retained against the influence of gravity.

My invention, in another important aspect thereof, relates to an atomizing device of the character described wherein an atomizing orifice communicates with the liquid-containing chamber, this orifice being traversed by a jet of atomizing air having sufficient velocity to overcome the capillary effect tending to retain the liquid medium in said chamber.

Various other objects, advantages and features of my invention will become apparent from the following detailed description.

My invention resides in the atomizing devices, arrangements and combinations of the character hereinafter described and claimed.

For an understanding of my invention and for an illustration of some of the many forms thereof, reference is to be had to the accompanying drawings, in which:

Figure 1 is an elevational view showing my novel atomizing device associated with a liquidcontaining receptacle;

Fig. 2 is a vertical sectional view, partly in elevation, taken on the line 2-2 of Fig. 1 looking in the direction of the arrows;

Fig. 3 is a perspective view showing parts of the atomizing device in disassembled relation;

Fig. 4 is a diagrammatic view illustrating the operation of the atomizing device;

Fig. 5 is a vertical sectional view, partly in elevation, showing an atomizing device of a modified form;

Fig. 6 is a vertical sectional view, partly in elevation, showing an atomizing device of another modified form;

Fig. 7 is a vertical sectional view, partly in elevation, showing a modified diaphragm utilizable in accordance with my invention;

Fig. 8 is a vertical sectional view, partly in C10" vation, showing an atomizing device of a modified form;

Fig. 9 is a perspective view showing parts of the atomizing device of Fig. 8 in disassembled relation; and

Fig. 10 is a fragmentary, vertical sectional view showing an atomizing device of another form.

In general, my invention relates to devices utilizable for atomizing any desired liquid substance whether a perfume, an antiseptic agent, a cleaning agent, a coating medium, or otherwise as may be desired, liquid materials of this and equivalent character being hereinafter generically referred to as a liquid or as a liquid medium. The liquid or liquid medium to be atomized may be contained in a bottle, receptacle, container, or equivalent, container structures of this character being hereinafter generically referred to as a bottle.

Referrin to Fig. 1, I have illustrated a liquidcontaining bottle B having a neck n with which is associated an atomizing device A as constructed in accordance with my invention.

As shown in Figs. 2 and 3, the atomizing device A comprises a washer I, a pair of cup-shaped members 2 and 3, an actuating bulb 4 and a shell or housing 5.

The washer l is formed from a circular piece of soft rubber, or equivalent, the diameter of which corresponds with the diameter of the circular flanged section nl of the bottle neck n, Fig. 2, upon which said washer is adapted to seat as hereinafter described. Centrally thereof, the washer I is provided with a depending tubular section la defining a vertical passage extending through said washer I. The washer I further comprises, on its upper surface, a groove lb which, preferably, is concentrically related to the passage through the tubular section la. A passage lc extends from the groove lb downward through the washer so as to place the space interiorly of the bottle B in communication with the atmosphere as hereinafter described.

As stated, the washer l is adapted to seat upon the bottle flanged section nl and, in turn, the cup-shaped member 2 is adapted to seat upon the washer I which has a diameter corresponding with that of said cup-shaped member 2. Gentrally thereof, the member 2 is provided with a depending tubular section 2a substantially shorter than the washer tubular section la and defining a vertical passage extending through said member 2. The external diameter of thetubular section 2c is slightly greater than the internal ing, circular section 20 which, in turn, terminates in a circular, horizontal ledge section 211 provided, preferably, with an upper circular depression 2e. As illustrated in Fig:,2,,the upstanding section 20 comprises a small fiuid'discharge.pas:- sage 2 and, on the interior surface thereof, said upstanding section 20 comprisesthevertical;poi-i sitioning lugs 29 disposed in predetermined relation with respect to thepassage 2) and spaced from each other, preferably, by an angle of less than 180* degrees; Further, as shownin Fig. 2, the lower surface of the horizontal section 21) of the cup-shaped member 2 comprises a groove 271 which communicates with the groove, lb ofthe washer. The groove 2h extendsfromthe groove lb to the extreme edge of the horizontal section 2b,- theouter' end, ofsaid groove 2h preferably, being'directlybeneath thepassage 2f. Still further, asshown in Fig; 3, the outer surface of the ledge-section Zdcomprises a slot 22" positioned in predetermined relation with respect to the passage 2,f; and utilizable as hereinafter described.

The. cup-shaped member 3 comprises a plane, horizontal-section 3b terminating in an upstanding, circular-section 3ewhich; in turn, terminates in a circular; horizontalledgesection'3d adapted toseat in the aforesaidcirculardepression 2e of the ledge section 2d, Fig. 2: The: dimensions of the cup-shaped member 3 compared to-thoseof the, cup-shaped member 2 are smaller to such degree that, when the cup-shapedmember- 3' is seated within the cup-shaped member-2, a' chamher 6 isformed between the horizontal'section 2b and its upstanding section 2c'-onthe onehand, and the I horizontal section 3b and its upstanding section 30- on the other hand; The upstanding section 30 comprises a small air-discharge passage 3) adapted to be disposed in horizontal alinement' with the: aforesaid passage; 2 of the upstanding-section- 2c.- Inorder that this alinement of the passages; M and 3]; may readily be accomplished'during; the assembling, operation, the upstanding section; 30 is provided with vertical grooves 39 which are disposed in the same predetermined relation, with respect to the passage 3f as are the aforesaid lugs lg-with respect to the passage 2f, the grooves 39 also beingspaced'from each other in the same angular relation as exists with respect: to the spacing of the lugs from each other.

The manner in which the washer land the cup-shaped member 2 are assembled has been hereinbefor'e explained: With this arrangement, the cup-shaped member 3" maybe assembled by seating the-ledge section 3d in the depression 2e and causing the respective lugs 29 to enter the grooves 30. By'so doing, the passage 3 is properly alined with the passage 2]. Of course, it will be understood that the cup-shaped members 2 and. 3 may be assembledfirst" and thereafter associated with'the washerxl,

The bulb 4, hereinbefore referred to. is formed from relatively soft rubber readily deformableby finger pressure although inherently tending toassume theposition shownin Figs-.- 1 and 2. Thebulb 4 comprises a circular base section 4a adapted to seat upon the interfitting ledge sections 2d and 3d of the respective cup-shaped members 2 and 3. Extending upwardly from the base section 4a and formed integrally therewith is the deformable bulb proper 4b which, preferably, is substantially hemi-spherioal in shape.

When the shell or housing Sisformed durin the manufacturing operation, it comprises a flanged section 5a, an upstanding tubular section 5b and a depending tubular section 50, these tubular sections being indicated by the dotted lines in Fig- 2., Further, during the manufacturing operation, the vertical wall of the shell 5. below the, flanged section 5a thereof has formed therein a discharge orifice 5f positioned with respect to a'lug 52' formed on the shell flanged section 5a.in,the same general relation as is the spacing between the hereinbefore described passage 2 and slot 22 of the cup-shaped member 2. Accordingly; afterthe washer I together with the cup-shaped members 2' and 3 have been assembledin the manner hereinbefore described, this assembly may be associated with the shell 5 by seating the lower surface of the-ledge section 2171 uponthe flanged section 5a of theshell 5 in such manner the the shell lug" Si" is received in the slot 22' of the cup-shaped member 2, Fig. 2. When this has been done; the shell discharge orifice 5f is positioned properly in horizontal alinement with the alined discharge passages I-fi and 3 of the respective cup-shaped members 2 and 3. It will-be noted that the shell dischargeorifice 5 is substantially larger than the discharge passages Zj; 31 and that the, groove 2hcommunicates with theatmosphere through-said= orifice 5}, Fig. 2.

Thereupon, the base section 411' of the bulb-4* maybe seated upon theinter-engagingledge sections 2d, 3d andthe upper end of the shell tubular section 521 folded or crimped over the uppersurface of the bulb base section 4a as shown at'S'dL. In so doing, the joint between the ledge sections 211 and 3d. is sealedin ayhighly eflicient manner as will'be understood from a consideration of Fig. 2. LikeWise an efllcient seal is formed between the bulb base section 4a and: the shell 5. It results, therefore, thatthe bulb, 4-, the upper surface of the horizontal section 3b and the interior surface of the circular section 30 form an air chamber 1 whichis entirely sealedexcept for; the passage 3f which opens to the atmosphere.

The assembly comprising thewasher l, cupshaped' members 2, and 3, the bulb 4' and the shell" 5 is nowin condition to be associated in: operative relation with respect to a bottle B containing the liquid to be atomized. When this is to be done, the upper end'ofatubular member" 8, of glass or equivalent material is telescoped' within, and tightly gripped by the lower end of the washer tubular sectionla. 'Iliereupon, relae tive movement is effected between. the described assembly and the bottle B, the tubular member 8 entering the bottle and the lower end thereof, when the atomizing assembly is-properly seated, terminating just short of thebottom of the bottle. During continued relative-movement of the assembly with respect to the bottle, the tubular shellsection 5c,passes'downwardlyalong the exterior surface of' the, bottle sectional and immediately thereafter the washer l seats upon. theupper surface of said bottle section nl. Finally, theshell tubular section 50 isfolded or crimped around said bottle sectionnl as shown at 5eto thereby securely associate the atomizer assembly with the bottle in fixed, operative relation.

It shall be understood that, within the purview of the invention, the various parts or elements of my novel atomizing device may be assembled otherwise than as described above in such suitable manner as may be desired.

The hereinbefore described cup-shaped members 2 and 3 together with the shell 5 are constructed of any material suitable for the intended use. Thus, for example, the cup-shaped member 2 and the shell 5 may be formed, for example, from nickel-plated brass having suitable thickness for the intended purpose. The horizontal section 3b of the cup-shaped member 3, in effect, is a diaphragm which, as hereinafter described, is deformable in response to change in air pressure in the chamber 1. Therefore, the cupshaped member 3, particularly the diaphragm section 32) thereof should be formed from suitable elastic material such, for example, as Monel metal, nickel, phosphor bronze, stainless steel or the like, the thickness of this diaphragm section 31) being small and dependent principally upon the volume of liquid to be elevated by each stroke of the bulb 4b.

With an atomizing device A associated with a liquid-containing bottle B as shown in Fig. 1, the liquid stands in the tubular member 8 at the same level as in the bottle B. The person performing the atomizing operation holds the bottle B in one hand and, by finger or thumb action of the same hand, alternately depresses and releases the bulb 41). When the bulb 4b is first depressed, a substantial amount of the air therein is forced to the atmosphere by way of the discharge passage which comprises the alined passages 2i and 3f, the diameter or transverse dimension of each of which should be small and dependent principally upon the volume of air to be ejected therethrough on each stroke of the bulb 42). When the bulb 4b is depressed and the pressure thereon released, said bulb section 4b, inherently, returns immediately to its normal position and, in so doing creates a partial vacuum in the chamber 1. At this time, air from the atmosphere is entering the chamber I through the discharge passage but. due to the small diameter of the passage 2f and 3f, the air pressure within said chamber 1 does not immediately return to atmospheric value. Accordingy, when the bulb section 4b returns to normal position as stated above, the diaphragm section 3b, by reason of the reduced air pressure in the chamber 1, is displaced or moves to a position somewhat as illustrated in Fig. 4, for example. As a result, liquid from the bottle B is drawn upwardly through the tubular member 8 and into the chamber 6 which is now enlarged substantially from the illustration thereof appearing in Fig. 2 by reason of the upward movement of the diaphragm section 3b, the wall surfaces defining the chamber 6, by capillary action, retaining a substantial part of the liquid in said chamber 6. The chamber 6 communicates with the supply of liquid by way of the tubular mem her 8. Except for the small passage 21, the chamber 6 is sealed from the atmosphere and, hence, said chamber 6 has substantially sealed access to the supply of liquid. In normal operation of the atomizer, the bulb section 41) is depressed again immediately after it returns to normal position. In response to such depression of the bulb section 4b, the air therein is compressed and a jet of air is caused to emerge 6 through the shell discharge orifice, this jet of air and the movement of the diaphragm section 31) withdrawing the liquid from the chamber 6 and atomizing the same.

As the liquid is thus withdrawn from the chamber B, the diaphragm section 3b resumes it normal position or substantially so as shown in Fig. 2. Accordingly, when the bulb section 4b again returns to normal position when the pressure thereon is released, as described above, the diaphragm section 3b again moves upwardly to recharge the chamber 6 with another supply of liquid which is atomized, in the manner described, when the bulb section lb is again moved downwardly by thumb or finger pressure.

In view of the foregoing, it will clearly appear that each downward excursion of the bulb section 4b (in response to finger or thumb pressure thereon) causes the atomized liquid to be ejected from the shell discharge orifice, and each upward excursion of said bulb section 4b (when the pressure thereon is released) causes a renewed supply of the liquid destined for atomization to be charged into the chamber 6. In normal operation, these cycles of movement follow each other in rapid succession and, therefore, the atomized liquid is ejected intermittently from the atomizing orifice in a frequently recurring manner entirely satisfactory for ordinary requirements.

It will be understood that the pressure on the surface of the liquid in the bottle B remains at the atmospheric value at all times. This is true because the bottle is able to breathe along the open path to the atmosphere defined by the passages Ic, lb and 2h.

In Fig. 5, I have illustrated an atomizing device A2 of a modified form. In lieu of the cup-shaped members 2 and 3 of Figs. 2 and 3, the device of Fig. 5 comprises the cup-shaped members [2 and I3 formed, respectively, of the same kind of material as said cup-shaped members 2 and 3.

The member I2 is of circular configuration and comprises a plane section l2a resting upon the washer I, this section l2a, centrally thereof, having a depending tubular section lZb telescopically related to the tubular section la of the washer I. At its periphery, the section Ia terminates in a flanged section I20.

The member l3, likewise, is of circular configuration and comprises a plane section |3a movable in diaphragm fashion substantially the same as does the hereinbefore described cup section 32). At the periphery thereof, the section |3a terminates in a flanged section I30.

The cup-shaped members I2 and I3 are substantially similar although, as clearly appears, the cup-shaped member [3 is dimensionally somewhat smaller than the cup-shaped member I? so that the former may be nested within the latter to provide the desired liquid-containing chamber 6. In order to properly maintain the two cup-shaped members [2 and IS in spaced relation as shown, it may be desirable or necessary for one or the other of the plane sections IZa, l3a thereof to have formed thereon a plurality of spaced lugs, not shown, which project toward and engage the other plane section.

Immediately adjacent its flanged section I30, the cup-shaped member l3 carries a spacing ring I4 which is engaged by the base section 4a of the bulb 4.

The spacing ring I4 is provided with a passage Mj disposed in alinement with the discharge pas-,

sages. I 3fand llj'formedin' the respective flanged.

sections l3cand'l2'c.

The-shell or housing 5." conformsgenerally with. the similar shell or housingshown in Fig. 2'and;

isprovided with a large discharge orifice: 5 disposed in: alinement with the. discharge passages.

It will be; understood that'the' atomizing device.

A2 should comprise the:- various other detailed featuresjllustrated: in. Fig; 2 and .described inicon-v nection" therewith" Further, itv will be under.- stood? that the operation of'said atomizin'g device A2: is substantially the. same as has been hereinbefore'. described in connection with; the

atomizing-deviceA.

In Fig. 6, I have illustrated: an. atomizing device. A2v which corresponds generally: with the deviceof Fig; 5'. However, in Fig. 6, thedischargei passage. is. constructed in. a manner somewhat.

different from that showninFig. 5. Thus, in Fig. 6, the jet of atomizing air passes from the chamber 'lbyway ofthe restrictedpassage 13 formed in the plane wall'section Ilia. Disposed beneath the passage I3!) is a passage l2'g, formed in the. plane wall section l2a, the passage |3g extending then horizontally, and.

vertically downward, opening to the atmosphere through the shell discharge orifice 5f.

InFig. 7, I have illustrated a cup-shaped member 43 which may be substituted for the cupshaped member 3 of Fig. 2. The cup-shaped member 43..is formed from the-same kind of material as is the cup-shaped member 3 and the plane section43a thereof is provided. with corrugations 43b, preferably circular. With a diaphragm construction of this character, greater amplitude of movement is produced per unit of energy than withthe diaphragmconstruction of.

Fig. 2. Hence, with the corrugated diaphragm construction, a greater quantityv of liquid is drawn into the chamber 6 on each strokeof. the diaphragm.

In Fig. 8, Iv have illustrated'an atomizing' device A3 which operates on a different principle than the atomizing devices hereinbefore. discussed. This atomizing device A3 comprises a lower cup-shaped member 52 having a depending,

tubular section 52a corresponding generally with the tubular section 2a of the cup-shaped member 2, said. tubular section 52a'being disposed within and snugly embraced by the tubular section la of the washer I, Fig. 8.. The cup-shaped member 52 further comprises a plane, horizontal section 5222 terminating in an. upstanding, circular section 520, Fig. 9.

The atomizing device A3 further comprises a cup-shaped member 53 having a plane-horizontal.

section 53b, terminating in an upstanding, circular section 530, Fig. 9, having aflanged surface 53d on the exterior. thereof, thefianged surface 5301 being adapted to be associated in sealed relation by a crimping or other forming operation as indicated at 54, with. the adjacent sectionof.

8 passages being in alinement with the shell. dis-- charge orifice 57.

In accordance with the invention, the cupshaped members 52 and 53 are. formed. from. nickel-plated. brass, or equivalentso that, during. the atomizing operation while the bulb 4b, alternately, is being depressed and released,,neither of the sections 52b and 5317, particularly the latter; act. as adiaphragm to draw liquid upwardly: fromthe. bottle into. the chamber 6, the area or capacity of which, therefore, remainslconstantat. alltimes or substantially so;

In lieu of diaphragm action of theaforesaid sections 52b, 53b on the liquidv in the. bottle, I. provide, in the horizontal section 531) of the cupshaped member 53, a passage. 53h whichiis'smalll compared to the discharge orifice, the passage.- 53h. being disposed in any suitable area of the. section 5312, for example, above the passage leading. into the liquid-containing bottle.. The passage 53h should be relatively small, as of the order of 0.002 to 0.005 of an inch, more or less. for an ordinary perfume-containing bottleand, preferably, said passage 53h; is formed by the use of a suitable tool which produces a thin sec t'on 530, the latter, thereafter, being piercedto' produce the passage 5372. As indicated, the'horizontal section. 531) preferably, is dished so that: slopes downwardly in all directionstoward the 1 Jcnter thereof.

With the arrangementof Figs. 8and 9; it is desirable that a positioning slot 53g beformed inwardly on the exter'or surface of the upstanding section 530 of. the member 53, and that. a. positioning lug 529 be formed on the interior surface of. the upstanding section 520 of the" member 52, this slot 53g. and lag 529: being so related that, when interengaged, the passages. forming the discharge passageand'the dischargeorifice are in alignment In view of the foregoing, it will be understood thatthe' top suriace of. the lug 52g engages the top surface. forming the slot 53g to. thereby properly position the.

members 52 and 53 in nested relation.

It-Willbe understood that the1shellI5..of.'Fig: 8

shouldbe properly associated with. theiassembly comprising the cup-shaped members 52 and 53,.

as by the lug-and-slot arrangement; shown in; Figs. Zand 3.

When, w th the form of' the. invention shown. in Fig. 8, the bulb section 4?) is depressed andthen released, the liquid in the liquid-containing: bottle, by a suction efiect applied: through. the passage 53h and without diaphragm actionby' the section53b, rises through thetubular mem-- her 8, through. the tubular section 52a;and.enters the chamber 6, a small? amount of this liquid probably passing into thechamber above the horizontal. section 53b of the cup-shaped member5'3 by way of the passage 53h. Thereafter, when. the bulb section 411 is depressed, the increased air pressure therein causes a jet of' atomizing air to pass first through the passage-- 55 and then throughthedischarge orifice; This;

jet of atomizing air effect-s withdrawal oflliquid from the chamber 6 andalsozfrom th chamber above the section 5311 provided that there is liqu'd in said last-named chamber. Thus, by alternate depression and release of the bulbsection' ib, a spray of atomized liquid is ejectedffrom the discharge orifice of i-ig. 8.

The form of atomizing device A4 illustrated. in 10 is substantially the same in principle as the form'shown in Figs. 8 and 9. However, Fig. 101: illustrates the. use of non-diaphragm cup-- shaped members 62 and 63 in lieu of the cupshaped members 52 and 53 of Figs. 8 and 9.

As shown, the cup-shaped member 62 slopes downwardly from its center throughout the entire periphery thereof and the cup-shaped member slopes upwardly from the passage 63d thereof, this passage corresponding with the hereinbefore described passage 53h, and the sloping wall of the member 63, preferably at the outer periphery thereof, comprising a. depending, circular flange 63a adapted to extend into the liquid collected in the chamber formed by the member 62. With a construct on of this character, the capacity of the chamber 6 is larger and, moreover, the liquid therein tends to collect in the lower outer channel of the cup-shaped member 62 from which it \passes to the discharge orifice along a path beneath the flange 63a in response to the atomizing operation and by action of gravity. Otherwise, the operation of the form of my invent on shown in Fig. is substantially the same as the form thereof shown in Figs. 9 and 10.

With all forms of my invention except the form shown in Fig. 10 and even with that form to some extent, the chamber 6 is of such limited depth that the l quid which passes thereinto in response to upward movement of the bulb section 421 remains to a great extent in said chamber by capillary action. Therefore, during use of the atomizing devices of my invention, they need not be maintained vertically or even approximately vertically.

It will be noted that the housing 5 of Fig. 8 differs from the other housings principally in that the flanged section 5a is omitted. With the atomizing devices of Fig. 8, the assembly seats on the bottle flange although it will be understood that an equivalent of the flanged section 5a may be provided if desired. It will be understood that, without departing from the invention, various mechanical changes may be made in the constructions herein disclosed. Thus, for example, and if desired, the circular depression 2e shown in Figs. 2 and 3 may be omitted, the ledge section 3d seating on and above the ledge section 2d. Obviously, the positioning lug-and-slot arrangements may de difierent from those described and, further, the space interiorly of the bottle B may be left at atmospheric pressure in any suitable manner other than as disclosed.

As regards those forms of my invention wherein a diaphragm is moved alternately in opposite directions, the atomizing operation is effected by movement of the diaphragm toward a position wherein the volume of the liquid-containing chamber is decreased and by ejection of air through the atomizing orifice. Under some circumstances, it may be desirable to provide an arrangement wherein the chamber formed in part by the bulb 4 does not communicate with the discharge orifice. If so, the liquid is ejected as a non-atomized liquid stream solely by action of the movable diaphragm section.

While the atomizing apparatus has been hereinbefore described as formed from metallic members and a rubber bulb, it shall be understood that suitable plastic material may be used in lieu of said metallic members for the housing parts, diaphragm, etc.

While the invention has been described as relating to the atom zation of liquids, it will be understood that the invent on is also adapted for other uses as, for example, an action similar in principle to the liquid-atomizing action on dry powder contained in the bottle l3,

While the invention has been described with respect to certain particular preferred example which give satisfactory results, it will be under stood by those skilled in the art after understanding the invention, that various changes and modifications may be made without departing from the'spirit and scope of the invention and it is intended therefore in the appended claims to cover all such changes and modifications.

What is claimed as new and desired to be secured by Letters Patent is:

1. In an atomizing device, a pair of cup-shaped members disposed in nested relation to form a liquid-receiving chamber, the cylindrical wall of each of said cup-shaped members having a small passage extending therethrough, said passages being alined and constituting a discharging passage, the flat wall of the inner cup-shaped member being a movable diaphragm, a bulb associated with said cup-shaped members to form a chamber, and means for retaining said cupshaped members and said bulb in assembled relation, said means comprising a shell having a discharge orifice therein alined with said discharge passage and having a flange upon which one of said cup-shaped members seats, the upper section of said shell being crimped around the base of said bulb.

2. In an atomizing device, a pair of cup shaped members arranged in nested relation and having adjacent surfaces thereof spaced apart to form a liquid receiving chamber, a compressible bulb having an air receiving cavity therein substantially closed on one side by one of said cup shaped members, the other cup shaped member having means for providing communication between said liquid receiving chamber and a source of liquor to be atomized, means for securing-said members and bulb together as a unit and provided with a discharge orifice, and means forming discharge passages leading from said cavity and chamber to a point adjacent said discharge orifice, the member adjacent said bulb being fiexible and movable in response to compression and expansion of said bulb to vary the volume of said liquid'receiving chamber in the same manner and simultaneously with changes in the volume of said cavity on compression and expansion of said bulb.

3. An atomizing device comprising two members, one of which is cup-shaped and has an annular ledge extending about the periphery thereof, the other member having a marginal portion resting upon said annular ledge and having a central portion spaced from the adjacent surface of the cup-shaped member so as to cooperate therewith in defining a liquid receiving chamber, a compressible bulb having an air receiving cavity therein substantially closed by said other member, means securing said members and bulb together and formed with a discharge orifice therein, means forming a conduit for conducting liquid to said chamber from a source of liquid to be atomized, said cup-shaped member having a discharge passage therein communicating with said atomizing orifice, and means forming a discharge pass-age extending fro-m the cavity in said bulb to said liquid receiving chamber to cause air and liqu d to be forced fromsaid chamber through said discharge orifice in atomized form when said bulb is compressed and to cause liquid to be drawn into said chamber from said source when said bulb expands.

4. An atomizing device comprising two cup rshape'd members arrangedin nested relation and having central portions which are spaced apart and cooperate to define a liguid receiving chamberya compressible bulb having an air receiving cavity therein, one of said members being cor- :rugated and fiexibleand positioned so as to substantially close said cavity whereby compression and expansion of said bulb will cause said corrugated member to be flexed in response to changes in pressure of'the air in said cavity to vary the volume of said chamber, means secur- "ingsaidmembers and bulb together and formed "with-a discharge orifice therein, means forming 'a conduit for conducting liquid to said chamber *from a source-of liquid tobe atomized, said cham- "ber having a discharge passage therein communicating with said discharge orifice, and means forming a dischargepassage extending from the 'cavity'insaid bulb to said discharge orifice wherebycompression of saidbulb will cause air to be forced from said cavity through said discharge orifice while simultaneously causing said cor- -'rugated-member to be flexed in a direction to decrease the volume of said chamber and force liquid "from the chamber through said orifice to be atomized by air being expelled from the bulb, wherea expansion of said bulb will cause air to be drawn into the bulb and will at the same time cause -the corrugatedmember to move in a direction to increase the volume of said chamber and 'draw'liquid into the chamber from said source.

"5. atomizing device comprising upper and flower members having portions thereof spaced apart and cooperating to define aliquid receiving chamber, the lower one of said members being cup shaped and having an opening in the base thereof communicating with means for supplying liquid-tube atomized to said chamber'and having adischarge passage in the wall portion thereof, the upper member being supported adjacent its aperiphery in spaced relation with respect to the lower-member and having a central portion inclined towardithe base of the lower'member, said upper member being formed with two openings there'lnone o'f which is centrally located in said .Iinclin-ed :portion'and thev other of which-islocatecl nearthe periphery o'fxtheupper member and ad- ;iacentfthe discharge passage in the wall portion of the cup shaped member, a compressible bulb having an air receiving cavity therein substantially closed by the uppermember, and means for securing said members and bulb together and formed :with a discharge orifice therein :aligned with the discharge passage in the wall portion 7 of thecup shaped member whereby compression of said bulb will cause air to be expelled from said cavity through the opening near the periphery of the upper member to said atomizing orifice and will at the same time cause air to be expelled through the central opening in the upper member into the liquid receiving chamber to'force liquid from said chamber through said discharge passage to the discharge orifice whereas expansion of said bulb will tend to draw air into said bulb and to draw liquid into the liquid receiving chamber.

6. In an atomizing device, a rubber washer having a depending tubular section, an outer cup shaped member having a tubular section telescoped Within said first named tubular section, an inner cup shaped member nested within said first named cup shaped member, the cylindrical wall of each of said cup shaped members having a small passage extending therethrough, said passages being aligned and constituting a ischarge passage, the inner cup shaped member having a bottom wall wholly spaced from the upper surface of the 'bottom wall of the outer cup shaped member and forming a chamber therewith, the bottom wall of the inner cup shaped member being a movable diaphragm, a bulb associated with said cup shaped members to form a chamber, and a shell for holding said cup shaped members and said'bulb in assembled relation, said shell having a discharge orifice aligned with the discharge passage in said nested cup shaped members.

HARRY B. RUDD.

REFERENCES CITED The following references are of record in the file of this patent:

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