US3363842A - Fire hose nozzle - Google Patents

Description

FIRE HOSE NOZZLE Filed oct. 5, 1965 2 sheets-sheet' 1 INVENTGR. 2055er Bae/vf rMen/54 Jan. 16, 1968 l .Q L BURNS 3,363,842

' FIRE HOSE NOZZLE l Filed oct. 5, 1965 2 sheets-sheet 2 United States Patent Cfitce 3,363,842 FIRE HOSE NZZLE Robert L. Burns, 7817 Denrock Ave., Los Angeles, Caiif. 90045 Filed Oct. 5, 1965, Ser. No. 492,993 9 Ciaims. (ci. 239-441) ABSTRACT F THE DISCLOSURE A nozzle having an inner tubular barrel and an outer tubular grip slidable on the barrel and including means defining with the barrel concentric orifices for discharging a solid liquid strain and a conical atomized liquid spray or fog, respectively, and valve means operated by axial movement of the grip along the barrel for selectively communicating the orifices to a liquid passage in the barrel.

This invention relates generally to liquid dispensing nozzles and has more particular reference to improvements in nozzles of the type which may be adjusted to discharge either a solid stream of liquid or an atomized liquid spray, commonly referred to as a fog.

Liquid dispensing nozzles of the type to which this invention pertains are generally well known in the art and are used for dispensing various kinds of liquids. Such nozzles, however, are most commonly employed for lire fighting purposes. In this application, the nozzles are utilized to direct either a solid stream or a mist or fog of fire extinguishing liquid into a burning structure` Thus, it is well known in the fire fighting art that some types of fires may be most quickly and easily extinguished by drenching the seat of the fiame with a fire extinguishing liquid. In this case, the fire hose nozzle is adjusted to discharge a solid stream of liquid. Such a solid stream is also employed when it is necessary to direct the liquid to a burning area remote from the nozzle. Other types of fires may be most quickly and easily quenched by blanketing or smothe-ring the fiame with a mist or fog of fire extinguishing liquid. In this case, the fire hose nozzle is adjusted to discharge the liquid in a finely atomized state to produce a dense cloud of fog or mist. Such a fog or mist is also used to shield the firemen operatin-g the nozzle from the intense heat of the flame being extinguished.

While the existing nozzles of the kind under discussion are satisfactory from the standpoint of their fog and stream producing capabilities, these nozzles tend to be relatively complex in construction and costly to manufacture. Accordingly, a need exists for an improved nozzle of this type which possesses greater simplicity of construction and economy of manufacture.

It is a general object of this invention to provide irnproved stream and fog dispensing nozzles of the character described.

A more specific object of the invention is to provide improved nozzles of the character described embodying separate stream and fog dispensing orifices and unique and simplified valve means for selectively communicating these orifices to the nozzle inlet.

Yet another object of the invention is to provide improved nozzles of the character described wherein the cone angle of the atomized, fog producing spray emerging from the nozzle may be readily adjusted.

A further object of the invention is to provide improved nozzles of the character described which are relatively simple in construction, embody a minimum number of parts, are economical to manufacture, reliable in operation, and otherwise ideally suited to their intended purposes.

Other objects, advantages, and features of the inven- 3,363,842 Patented Jan. 16, 1968 tiorl will become readily evident as the description procee s.

With these and suc-h other objects in view, the invention consists in the construction, arrangement, and combination of the various parts of the nozzles, whereby the objects contemplated are attained, as hereinafter set forth, pointed out in the appended claims, and illustrated in the attached drawings.

In these drawings:

FIGURE 1 is a perspective view of a stream `and fog dispensing nozzle according to the invention;

FIGURE 2 is a longitudinal section to the nozzle taken on line 2-2 in FIGURE 1 and illustrating the parts of the nozzle in the position which they occupy when the nozzle is shut off;

FIGURE 3 is a longitudinal section through the nozzle illustrating the parts of the nozzle in the positions which they occupy when the nozzle is set for dispensing the liquid fog or mist;

FIGURE 4 is a longitudinal section through the nozzle illustrating the nozzle parts in the positions which they occupy when the nozzle is set for dispensing a solid stream of liquid;

FIGURE 5 is a section taken on line URE 2;

FIGURE 6 is a section taken on line 6-6 in FIG- URE 3;

FIGURE 7 is a section URE 2;

FIGURE 8 illustrates, in fiat development and in various operative positions, certain ported valve sleeves embodied in the nozzle;

FIGURE 9 is a longitudinal section through a modied nozzle according to the invention; and

FIGURE 10 is a view similar to FIGURE 8 illustrating certain valve sleeves embodied in the nozzle of FIG- URE 9.

The nozzle 10 illustrated in FIGURES 1 thru 8 of these drawings comprises an inner nozzle structure 12 and an outer tubular nozzle member or sleeve 14 telescopically fitted on the front end of the nozzle structure 12. Nozzle structure 12 is made up of a number `of telescopical-ly engaging, relatively axially movable tubular members 16, 18 and 2t). The left-hand ends of these members will be hereinafter referred to as their rear ends and the right-hand ends of the members will be referred to as their front ends. Tubular members 16, 18, and 20 define a passage 22 extending axially therethrough and opening through the rear end of the inner member 16 for communication to a source of liquid under pressure through a conduit (not shown), such as a hose. The rear end of the inner member 16 has an internally threaded coupling 24 for connection to the conduit. Passage 22 terminates, at its forward end, in a forwardly opening orifice 26. Surrounding the passage 22, rearwardly of the orifice 26, is a rearwardly presented valve seat 28.

As will be explained presently, tubular members 18 and 20 are interconnected for axial movement thereof in unison relative to the tubular member 16. The rear end of the outer nozzle member 14 is telescopically fitted over the front end of the outer tubular member 20. The front end of the outer nozzle member is flared outwardly `and surrounds the front end of the nozzle structure 12 in radially spaced relation thereto so as to define a second, forwardly opening annular orifice 30 concentrically disposed about the inner orifice 26. Tubular members 16 and 18 have a series of circumferentially spaced, radially opening ports 32 and 34, respectively, in their cylindrical walls. As will be explained presently, these ports cooperate with the outer tubular member 20 to communicate the passage 22 to the annular orifice 5--5 in FIG- taken on line 7-7 in FIG- 30, thereby to permit liquid flow from the passage to the orifice, when the tubular members 16, 1S, and 20 occupy their relative positions of FIGURE 3. When the tubular members occupy their relative positions of FIG- URES 2 and 4, these members block iiow from the passage 22 to the orifice 3ft.

Disposed within the passage 22 is a supporting member 36. As will be explained presently, in the nozzle under consideration, supporting member 35 is operatively connected to the outer tubular member 2t) for movement in unison therewith relative to the tubular member 16. At this point, therefore, it is evident that the valve seat 28 and supporting member 36 undergo relative axial movement away from one another during left-hand axial movement of the outer tubular member relative to the tubular member 16 from the position in FIGURE 2 to the position in FIGURE 4. The supporting member and valve seat undergo relative axial movement toward one another during right-hand axial movement of the outer tubular member 2% relative to the tubular member 16 from the position in FIGURE 4 to the position of FIGURE 2. Supporting member 36 mounts a valve element or valve 38 which is movable into seating engagement with the valve seat 28, to block flow through the inner orifice 26, upon right-hand movement of the outer tubular member 2@ to its position of FIGURE 2. Lefthand movement of the outer tubular member from its position of FIGURE 2 to its position of FIGURE 4 retracts the valve 38 out of seating engagement with the valve seat 28 to permit iiow through the inner orifice 26.

It is now evident that the tubular members 16, 18, and 2Q together form `a first valve means 40 for controlling liquid flow from the passage 22 to the outer annular orifice 30. The valve seat 28, supporting member 36, and Valve 38 together form a second valve means 42 for controlling liquid iiow from the passage 22 to the inner orifice 26. It is further evident that when the tubular mem- bers 16, 18, and 20 are adjusted to their relative positions of FIGURE 2, both valve means 4G and 42 are closed, whereby the nozzle is shut off. Adjustment of the tubular members to their relative positions of FIGURE 3 opens the valve means 4t) to communicate the passage 22 to the outer annular orifice 30. Valve means 4t) are closed and valve means 42 are opened, to communicate passage 22 to the inner orifice 26, by adjustment of the tubular members to their relative positions of FIGURE 4. As will be explained presently, the inner orifice 26 is shaped to discharge a solid stream of liquid. Annular orifice 3i) is shaped to discharge a fog or mist composed of finely atomized droplets. Accordingly, when the nozzle 10 is connected to a source of liquid under pressure and is adjusted to the setting illustrated in FIGURE 3, a hollow cone of finely atomized liquid is dispensed or discharged to the outer annular orifice to produce a mist or fog. As will appear presently, the outer nozzle member 14 is axially adjustable to vary the angle of this cone. When the nozzle is adjusted to the setting of FIGURE 4, a solid stream of liquid is dispensed or discharged through the inner orifice 26. One unique and highly important feature of the invention resides in the fact that the nozzle is adjusted between its settings of FIGURES 2, 3, and 4 by directly grasping the outer tubular member 2.0 and shifting the latter axially relative to the tubular member 16.

Referring now in greater detail to the nozzle 10, the tubular member 16 comprises a cylindrical barrel 44. r)The rear end of this barrel is enlarged and externally axially grooved to form the coupling 24. Threaded in the front end of the barrel 44 is an inner nozzle member 46. The inner orifice 26 extends axially through this inner nozzle member and continues, at its rear end, in a conically tapered passage 4S which opens through the rear face of the member. Conical passage 48 provides for relatively smooth, nonturbulent flow of liquid from the passage 22 into the orifice 26. The forward end of the tapered wall of the passage 4S defines the valve seat 23.

The tubular member 18 comprises an inner valve element or sleeve which slidably engages the inner surface of the barrel 44. The valve sleeve 18 is provided with a sutiiciently close lit in the barrel 44 to prevent leakage of liquid between the sleeve and barrel. If desired, seals, such as O-rings, may be provided to form a liquid tight seal between the sleeve and barrel. When the valve sleeve 18 occupies its position of FIGURE 2 and its position of FIGURE 4 relative to the barrel 44, the ports 32 and 34 in the barrel and sleeve are misaligned, as illustrated. The ports are aligned when the valve sleeve 18 occupies its position of FIGURE 3. Preferably, the axes of these ports incline forwardly, as shown. The rear end of the inner nozzle member 46 is externally reduced in diameter relative to the internal diameter of the barrel 44, thereby to form between the barrel and the rear end of the nozzle member an annular space for receiving the forward end of the valve sleeve 18 when the latter occupies its positions of FIGURES 2 and 3. The reduced rear end of the inner nozzle member 46 is preferably externally dirnensioned to fit slidably within the valve sleeve 18. Also, the internal diameter of the enlarged rear end of the tapered inner passage 4S leading to the inner orifice 26 preferably approaches the inner diameter of the valve sleeve 18.

The outer tubular member 20 comprises an outer valve sleeve which is slidable on the barrel 44. O-rings Si? provide a fluid tight seal between the valve sleeve 2t) and the barrel 44. The rear end of the outer valve sleeve 20 is radially enlarged and externally axially grooved to form a rear grip section S2 -by which the sleeve may be moved between its positions of FIGURES 2, 3, and 4. When the outer valve sleeve occupies its forward position of FIGURE 2, 4the forward end of this sleeve extends across the ports 32 in the barrel 44 into sealing engagement with the forward O-ring 50, which is located forwardly of the latter ports. -In its forward position, therefore, the outer valve sleeve cooperates with the inner valve sleeve 18 to block liquid liow from the passage 22 to the outer annular orifice 30. When the outer valve sleeve 20 occupies its intermediate position of FIGURE 3, the forward end of the sleeve uncovers the ports 32 in the barrel 44, thereby permitting liquid iiow from the passage 22, through the inner valve sleeve ports 34 and the barrel ports 32 to the outer orifice 30. In the rear position of the outer valve sleeve 20 illustrated in FIG- URE 4, the forward end of this sleeve is located rearwardly of the barrel ports 32 and liquid flow through the latter ports from the passage 22 to the outer annular orifice 30 is blocked only by the inner valve sleeve 18.

Valve supporting mem-ber 36 is a spider comprising two abutting plates 54 having opposing channel-shaped sections 56 defining a bearing bore 58 on the central axis of the barrel 44. The outer edges of the spider plates 54 are fitted in diametrically opposed axial slots '59 in and opening through the rear end of the inner valve sleeve 18. The inner valve sleeve 18, outer valve sleeve 20, and spider 36 are connected by a pin 60. This pin is threaded 1n the rear grip section 52 of the outer valve sleeve 20 and extends through a helical slot 62 in the nozzle valve 44. The inner end of pin 60 projects through a bore in the inner valve sleeve 18, aligned with one of the inner valve sleeve slots 59, into notches 64 in the adjacent longitudinal edges of the spider plates 54. It is evident at this point that rotation of the outer valve sleeve 20 1n one direction relative to the nozzle barrel 44 is effective to retract the outer sleeve, the inner valve sleeve 18, and the spider 36 rearwardly in unison along the barrel. Rotation of the outer valve sleeve 20 in the opposite direction is effective to advance the outer sleeve, the inner valve sleeve, and the spider forwardly in unison along the barrel.

The inner valve member 38 includes a stem 66 which extends slidably through the bearing bore S8 in the spider 36. Actin-g between the front end of the spider 36 and the valve 38 is a spring `68 for urging the valve forwardly toward its valve seat 28. Forward movement of the valve 38 relative to the spider 36 is limited by engagement of a shoulder pin 70` on the valve stem 66 with the rear end of the spider 36. Valve 38 is thus capable of limited axial movement relative to the spider 36. The extent of this relative axial movement is made such that the valve 38 `will engage the valve seat 28 when the outer valve sleeve 26 occupies its forward position of FIGURE 2 and its intermediate position of FIGURE 3 on the nozzle barrel 44. When the outer valve sleeve is retracted to its rear position of FIGURE 4, the shoulder pin 70 on the valve stem 66 engages the spider 36 to effect retraction of the valve 38 out of seating engagement with the valve seat 28.

The outer nozzle member 14 has a rear, radially enlarged and externally axially grooved grip section 72 which is slidably and rotatably fitted on the forward end of the outer valve sleeve 29. The outer nozzle member and outer valve sleeve are interconnected by a pin 74 which is threaded in the nozzle member and engages a helical groove 76 in the outer valve sleeve. Accordingly, rotation of the outer nozzle member 72 in one direction relative to the outer valve sleeve 20 is effective to retract the nozzle member rearwardly relative to the sleeve. Rotation of the outer nozzle member in the opposite direction relative to the outer valve sleeve is effective to advance the nozzle member forwardly relative to the sleeve.

The outer nozzle member 14, in the region forwardly of the outer valve sleeve 20, is radially spaced from the nozzle barrel 44 to define therebetween an annular fiow passage '78 communicating with the outer annular oritice 3f). The forward end of the nozzle member 14, which defines the outer wall of this passage, fiares outwardly at an acute angle relative to the central axis of the nozzle and then extends forwardly parallel to this axis in radially spaced, coaxial surrounding relation to a circular, radially projecting flange 80 on the front end of the inner nozzle member 46. The inner surface of the flared forward end of the outer nozzle member 14 and the outer edge of the inner nozzle flange 80 defines therebetween the annular orifice 30. The rear face of the flange is curved, as shown, to direct the emerging liquid outwardly toward the annular orifice 30. As noted earlier, the liquid is discharged from the orifice as a mist or fog. Accordingly, it is necessary to finely atomize the emerging liquid. To this end, a serrated atomizing ring 32 is disposed in the outer nozzle passage 78, just upstream of the orifice 30. This ring may be clamped between the front end of the nozzle barrel 44 and the inner nozzle member 46, as shown, and is formed with a number of circumferentially spaced, radially extending teeth 84 about its outer edge. These teeth aid in breaking up or atomizing the emerging liquid into finely divided particles which are discharged from the orifice 30` `in the form of a mist or fog.

As noted earlier, the outer nozzle member 14 is axially movable relative to the outer valve sleeve 20 and, hence, relative to the nozzle flange 80. Forward extension of the nozzle member to its phantom line position of FIG- URE 3 locates the nozzle flange 80 withinl the rear end of the forward cylindrical opening 86 in the outer nozzle member. Under these conditions, the atomized liquid emerging to the orifice 30 forms a generally hollow cylindrical spray. Retraction of the outer nozzle member to a solid line position of FIGURE 3 locates the nozzle flange 80 at the front end of the cylindrical nozzle opening 86. Under these conditions, the atomized liquid emerges from the nozzle orifice 30 in a hollow wide angle cone. Adjustment of the outer nozzle member between these extreme positions thereof varies the cone angle of the emerging spray between the angles corresponding to the full and phantom line settings of the outer nozzle member in FIGURE 3.

When the nozzle 10 is placed on the ground, the forward enlarged end of the outer nozzle member 14 engages the ground. For this reason, it is desirable to mount a projective ring 88 about this end of the nozzle member.

It is now evident that when the outer valve sleeve 2t) occupies its forward position of FIGURE 2 on the nozzle barrel 44, the ports 32 and 34 in the barrel and inner valve sleeve 18 are misaligned and the barrel ports 32 are covered by the outer valve sleeve. The inner valve 38 engages its valve seat 28. Under these conditions, flow through the nozzle 10 is completely cut ofi. Rearward retraction of the outer valve sleeve 20 to its intermediate position of FIG-URE 2 uncovers the barrel ports 32 and aligns the inner valve sleeve ports 34 with the barrel ports. The inner valve 38 remains in seating engagement with its valve seat 28. Under these conditions, liquid liows from the nozzle inlet passage 22, through the aligned ports 32, 34 and the outer flow passage 73, to the outer annular orifice 30 and is then discharged through the latter orifice in the form of a fog or mist. Axial adjustment of the outer nozzle member 14 is effective to vary the cone angle of the emerging fog. Further rearward retraction of the outer valve sleeve 2t) to its rear position of FIGURE 4 again misaligns the barrel and inner valve sleeve ports 32, 34 to cut off liquid flow to the orifice 3f?. Now, the inner valve 33 is separated from its seat 28 to communicate the nozzle inlet passage 22 to the inner orifice 26, Under these conditions, a solid stream of liquid is discharged through the latter orifice.

This axial adjustment of the outer valve sleeve 2t) is accomplished by rotation of the sleeve to cause the pin 60 to traverse the helical slots 62 in the nozzle barrel 44. Accordingly, during adjustment of the outer valve sleeve, the ports 32 and 34 in the barrel 44 and inner valve sleeve 18 undergo a compound motion involving both relative axial motion and relative rotational motion of the ports. FIGURE 8 depicts this relative compound motion of the ports. The resultant relative motion of the ports occurs along the directional line I..

FIGURES 9 and l() illustrate a modified nozzle 10i) according to the invention which is identical to the nozzle 10 with two exceptions. One of the differences between the nozzles resides in the fact that the outer nozzle member 162 of the nozzle 180 is integrally joined to the outer valve sleeve 104. Accordingly, axial adjustment of the outer nozzle member relative to the inner nozzle liange 166 to vary the cone angle of the atomized mist or fog emerging from the outer annular nozzle orifice 168 requires simultaneous axial adjustment of the outer valve sleeve 104 relative to the nozzle barrel 110. `In the nozzle 100, axial adjustment of the outer nozzle member 102 between its maximum and minimum cone angle settings corresponding to those illustrated in phantom full lines in FIGURE 3 is accomplished by axially adjusting the outer valve sleeve 104 to either side of a position corresponding to the intermediate setting of the outer valve sleeve 2@ illustrated in FIGURE 3. This latter setting of the outer valve sleeve 104 is depicted at ll in FIGUR-E l0, which illustrates the nozzle barrel and inner valve sleeve 112 and the ports 114 and. 116 therein.

Returning for the moment to FIGURE 8, it will be observed that even slight movement of the outer valve sleeve 20 of `nozzle 10 in either direction from its intermediate setting illustrated at II in FIGURE 8, and in FIGURE 3, results in relative movement of the barrel and inner valve sleeve ports 32, 34 along the direction line L and in progressively increasing misalignment of these ports. This is permissible in the nozzle 1f) becaue of the fact that the inner valve sleeve 18 and nozzle barrel 44 may remain fixed in their relative positions illustrated at II in FIGURE 8 during relative axial adjustment of the outer nozzle member 14 to vary the cone angle of the mist or fog spray discharged from the outer annular orifice 30. ln the nozzle Hifi, on the other hand, the nozzle barrel 119 and inner valve sleeve 112 move relative to one another during adjustment of the outer nozzle member 1192;, to vary this cone angle.

Accordingly, in order to maintain constant flow to the fog orifice 103 in all cone angle settings of the outer nozzle member 102, either the ports 114 in the barrel 110 or the ports 116 in the outer valve sleeve 112 are elongated in directions parallel to the direction line L of relative movement of these ports during adjustment of the outer valve sleeve 104. In FiGURE 9, the inner valve sleeve ports 116 are thus elongated.

Nozzle 160 is otherwise identical to the nozzle 10. Accordingly, it is evident that the nozzle 100 operates in much the same way as nozzle except that adjustment of the fog spray cone angle produced by the nozzle 100 is varied by adjusting the outer Valve sleeve 104 and the outer nozzle member 102 in unison relative to the nozzle barrel 110, rather than adjusting the outer nozzle member relative to the outer valve sleeve, as in the earlier form of the invention.

Other modifications than those illustrated in the drawings are possible. For example, the relative axial movement `of the vave support or spider 36 and valve seat 28 required for seating and unseating of the inner valve 38 may be accomplished by connecting the spider to the nozzle barrel 44 (or 110) and connecting the nozzle member 46 tothe outer valve sleeve 2G (or 104). Also, the inner valve sleeve 112 may be eliminated by providing ports in the outer valve sleeve similar to those in the illustrated inner valve sleeves and arranging the outer orilice passage 78 so that it communicates with the nozzle inlet passage 22 through these ports. in this regard, it is significant to note that the forward end of the nozzle barrle defines the valve sleeve which cooperates with the remaining valve sleeve or sleeves to control liquid flow from the nozzle inlet passage to the outer annular fog orifice.

It is evident =at this point, therefore, that the invention herein described and illustrated is fully capable of attaining the several objects and advantages preliminarily set forth.

While certain embodiments of the invention have been specifically illustrated and described `for the purpose of disclosing the invention, various modifications in the design, arrangement of parts, and instrumentalities in addition to those mentioned above are possible within the spirit and scope of the following claims.

What is claimed as new in support of Letters Patent is:

1. A nozzle for selectively discharging a solid stream of liquid and a liquid fog comprising:

a tubular barrel having front and rear ends and a passage extending axially therethrough and opening to the rear end thereof for connection to a source of liquid under pressure,

an external tubular grip slidable on said barrel,

an inner nozzle member at the front end of said passage having a forwardly opening orifice means communicating with said passage and a rearwardly presented valve seat about said orifice means,

a supporting member within said passage rearwardly of said valve seat,

means operatively connecting said barrel to one of said members,

means operatively connecting said grip to the other member, whereby said supporting member Iand valve seat undergo relative axial movement toward one another during axial movement of said grip in one direction along said barrel and said supporting member and valve seat undergo relative axial movement away from one another during axial movement of said grip in the opposite direction along said barrel,

a valve sleeve telescopically engaging said barrel and ti operatively connected to said grip for axial movement therewith,

an outer nozzle member operatively connected to said grip for axial movement therewith and defining outer orifice means about said inner orifice means communicating with said passage rearwardly of said valve seat through ports in said barrel and valve sleeve when said grip occupies a first axial position relative to said barrel,

said grip being axially movable in said opposite direction along said barrel to a second position wherein said ports are misaligned to block fiow from said passage to said outer orifice means,

a valve mounted on `said supporting member for engagement with said valve seat to block flow from said passage to said inner orifice means when said grip occupies said first position thereof, said valve and seat being separated to permit flow from said passage to said inner roifice means by axial movement of said grip to said second position, and

one of said orifice means being shaped to discharge a solid stream of liquid and the other orifice means being shaped to discharge an atomized liquid fog.

2. A nozzle for selectively discharging a solid liquid stream and a conical atomized liquid spray, comprising: an inner tubular valve member having front and rear ends, a coupling at said rear end for connection to a liquid conduit, and a central passage opening through said rear end for communication to said conduit and through said front end through -an inner forwardly opening orifice at the front end of said barrel member,

an outer tubular grip member surrounding and slidable on said barrel member,

a sleeve secured to and extending forwardly from said grip member in surrounding radially spaced relation to said barrel member to define between said sleeve and barrel member an annular outer passage terminating in an outer annular forwardly opening orifice,

said barrel .member having port means communicating with said passages,

first coacting valve means on said members including an outer valve element secured to and movable with said grip member for closing said port means to block liquid flow from said central passage to said outer orifice upon relative axial move-ment of said grip member to a rst position. with respect to said barrel member, and for opening said port means to permit liquid fiow from said central passage to said outer orifice upon relative Aaxial movement of said grip member to a second position with respect to said barrel member,

second coacting valve means on said members including an inner valve element secured to and movable with said grip member for blocking liquid fiow from said central passage through said inner orifice when said grip member occupies said second position and permitting liquid flow from said central passage through said inner oritice when said grip member occupies said first position, and

said outer orifice being shaped to discharge an atomized conical liquid spray, and said inner orifice being shaped to discharge the solid liquid stream.

3. A nozzle according to claim 2 wherein:

said barrel member and sleeve include coacting means for adjusting the cone angle of said spray upon relative axial movement of said sleeve with respect to said barrel member, and

said sleeve surrounds said grip member so as to be radially spaced thereby from said barrel member, and said sleeve is axially movable relative to said grip member to permit axial adjustment of said sleeve and thereby said cone angle Without axial adjustment of said grip member,

4. A nozzle according to claim 2 Wherein:

said barrel member and sleeve include coacting means for adjusting the cone angle of said spray upon relative axial movement of said sleeve with respect to said barrel member,

said sleeve is rigid on said grip member so that axial adjustment of said sleeve to adjust said cone angle requires axial adjustment of said grip member, and

said port means and rst valve means include means whereby said grip member may be axially adjusted through a limited range about said second position with respect to said barrel member to adjust said cone angle without interrupting liquid flow through said port means.

5. A nozzle according to claim 2 wherein:

said grip member is relatively axially movable towa third position with respect to said barrel member wherein said first valve means close said port means and said second valve means close said inner orifice to block all liquid ow through the nozzle.

6. A nozzle according to claim 2 wherein:

said outer valve element comprises a valve sleeve which slides along said barrel member to cover and uncover said support means during relative axial movement of said grip member between said positions.

7. A nozzle according to claim `6 wherein:

said valve sleeve slides within said barrel member, and

said rst valve means comprise a connection between said grip member and said valve sleeve through an opening in said barrel member.

`8. A nozzle according to claim 2 wherein:

said second valve means comprise means within said central passage secured to one of said members and deiining a valve seat about said central passage rearwardly of said orifice, and an inner valve element in said central passage rearwardly of said valve seat and secured to the other member, whereby said valve seat and inner valve clement undergo relative axial movement into seating engagement upon relative axial movement of said grip member to s-aid second position and relative axial move-ment out of seating engagement upon relative axial movement of said grip member to said first position.

9. A nozzle according to claim 8 wherein:

said grip member undergoes forward axial movement relative to said barrel member during movement of said grip member from said first position to said second position,

said grip member is movable forwardly relative to said barrel member beyond said second position to a third position,

said inner valve element is spring loaded to accommodate movement of said grip member to said third position while said valve element and valve seat remain in seating Contact, and

said tirst valve means include means for closing said port .means when said grip member occupies said third position, thereby to block all liquid flow through said nozzle.

References Cited UNITED STATES PATENTS 196,216 10/1877 Gilchrist et al 239-458 552,011 12/1895 Smith 239-458 X 705,754 7/1902 Harris 239-441 721,665 3/1903 Busha 239-441 2,218,411 10/1940 Albach et al 239-448 X 2,629,633 .2i/1953 Wright 239-458 3,012,733 12/1961 Allenhaugh 239-441 5 M. HENSON WOOD, JR., Primary Examiner.

V. C. WILKS, Assistant Examiner.

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