US2318951A - Spray nozzle - Google Patents

Description

y 1943. J. o. LEWIS 2,318,951

SPRAY NOZZLE Filed Feb. '7, 1942 INVENTOR' Cid/ 7.70 0. [eh/w Patented May 11, 19113 SPRAY NOZZLE John 0. Lewis, Woods ide, N. Y., asslgnor to Delta Nozzle Corp., New York, N. Y., a corporation of New York Application February 7, 1942, Serial N 0. 429,881

7 Claims. (Cl. 299-143) This invention relates to spray nozzles adapted for fire extinguishing purposes, or for any other liquid-spraying purposes, wherein the liquid forced through the nozzle is emitted in a plurality of streams which impinge against one another and are thereby broken up into a'spray which spreads out over a relatively large area. A nozzle of this character is shown in my co-pending application, Serial No. 392,057 filed May 6, 1941, and the present invention relates to a Simplifled means for making a nozzle of the character therein described.

In said application, a nozzle composed of a plurality of parts, preferably of plastic material or of cast metal, is disclosed, and the primary object of the present invention is to greatly simplify the construction of the nozzle by materially reducing the number of molded or cast parts employed. Such a reduction in the number of parts not only simplifies the assembly of the nozzle, but also minimizes the assembling operations and reduces the possibility of leakage occurring through the various joints between the parts, since the reduction in the number of parts employed also reduces the number of joints between the same.

In the accompanying drawing, in which an embodiment of the invention is shown, Fig. 1 is a;

-vertical sectional view through a nozzle constructed'in accordance with the invention, the view being taken on the line ll of Fig. 2, looking in the direction of the arrows; Fig. 2 is a top plan view of the nozzle; Fig. 3 is a sectional view on the line 33 of Fig. 1, looking in the direction of the arrows; Fig. 4 is a vertical sectional view through the top member of the nozzle; Fig. 5 is a vertical sectional view through the outer member or shell; Fig. 6 is a vertical sectional view through the base member, the three members shown in Figs. 4 to 6. inclusive constituting the parts which form the nozzle; Fig. '7 is a sectional view on the line I-! of Fig. 2, looking in the direction of the arrows; Fig. 8 is a plan view of the member shown in Fig. 4; Fig. 9 is a plan view -of the member shown in Fig. 5; and Fig. 10 is a plan view of the base member shown in Fig. 6.

In the construction of the improved nozzle, it is contemplated that the same shell be made by molding or casting methods, enabling the nozzle to be i made of plastic material of suitablestrength, or of cast metal. In the form shown, the nozzle is composed of three separately molded or cast parts which accurately fit together and when united by adhesive or other means, a strong efficient structure results. By the design disiii closed, and by the arrangement of the various parts of the nozzle, uninterrupted, gradually curved passages are provided through the nozzle,

said passages enabling an unimpeded flow for the water or other liquid.

In the form disclosed, the nozzle is composed of threeparts, namely, those shown at I, 2 and 3 in the drawing. The part shown at I will be hereinafter referred to as the base member; that shown at 2 being termed the shell and that shown at 3 being referred to as the top.

The base member I is formed with a boss 4, externally threaded at 5, to enable the nozzle to be attached to a hose, or to piping or any other outlet for the water or other liquid to be sprayed. Extending radially from the boss is a disk portion 6, provided with a concave or dished upper face 1, formed with a plurality of spaced recesses a for htness and saving of material. Located centrally within the base I is a stem 9, provided with the closed-end passage I0, als for lightness and conservation of material. The stem 9 is spaced from the inner sides of the base I by webs H (Fig. 10) which centrally locate the stem and provide passages I2 between them through which the water or other liquid passes. At its top, the stem 9 is bevelled at diametrically opposite points, as indicated at l3 and I 4, to direct two streams of water into impingement as will be hereafter described.

The shell 2 is formed with an annular side wall l5, within which the disk portion 6 of the base member I closely fits, the shell 2 also having a grooved annular end wall I6, provided with a central opening 21 and having its under side formed with a plurality of spaced, radially extending grooves ll constituting water passages. When the base member I is fitted within the shell 2, as clearly seen in Fig. 1, the dished surface I of the disk portion 6 fits against the under side of the end wall l6 and the portions of said dished surface that are located between the recesses 8 extend over the open sides of the grooves ll, these surfaces thus co-operating with said grooves in the formation of the water passages which extend radially to the side wall l5, and thence turn upwardly, as at l8, terminating in the outlets or orifices l9 extending substantially parallel to the plane of the wall l5.

The top or outer surface of the end wall I6 is formed with a plurality of projections or teeth 20, each of which is in radial alignment with one of the outlet openings or ports 20. Formed between the teeth 20 are grooves 2|.

The top portion 3 of the nozzle is formed with a head portion 22 from which extends a boss 23 oi! smaller diameter than the head. In the assembly of the nozzle, the boss 23, fits within the central opening 21 in the end wall It and is surrounded by said end wall It. Extending through the boss 23 and through the head 22 is a plurality of vertically disposed grooves 24, these grooves being so positioned that when the head 3 is fitted within the shell 2, each of said grooves 24 will be aligned with one of the radial grooves I! so that water entering into the nozzle through the passages l2 will not only be directed radially through passages l1 and I8, but also upwardly and angularly through the grooves 24 and out through the open ends 25 thereof,.these open ends or orifices being in radial alignment with the ports l9.

It will be noted that the upper or angular portions 26 of the grooves 24 fit over the projections or teeth 20. The grooves 24 are however, of greater depth than the teeth 20, so that a. continuous water passage is formed between each of the grooves 24 and each of the teeth 20.

Through the arrangement thus far disclosed, it will be'seen that water entering through the passages l2 will be directed radially through passages H and through the orifices I9 and also through the passages 24. 25 and out of the ports 25. Since ports 25 and I9 are in radial alignment and are directed angularly toward one another, the streams emanating from these ports will impinge and will be broken up into fine particles or mist.

It will be noted that the top 3 is formed with four radial projections or ribs 30 and that four of the passages 24, 26 extend through and terminate in ports 3| at the nearly vertical ends 32 Fig. 7) of these ribs. Thus it will be seen that these ports 3| are located at nearly right angles to the ports IS with which they are aligned, and the streams emanating from them will impinge at points nearer to the nozzle than the points of impingement of those which emanate from ports 25 and I9.

The top member 3 of the nozzle is formedwith a central bore 33 in which the stem 9 fits, said bore being cut laterally at diametrically opposite points to form grooves 34, 35, these grooves inclining inwardly adjacent the top as indicated at 36, said inclination corresponding substantially to the inclined surfaces l3 and I4 adjacent the upper end of the stem 9. When the stem 9 is fitted within the bore 33 it fills the cylindrical part of the same and co-operates in forming the grooves 34 and 35 into two water passages, terminating at the top of the nozzle in two orifices 31 and 38. Since the upper end portions of the stem 9 and similar parts of the grooves 34 and 35 are inclined, the streams passing through these portions of the grooves will be directed angularly to one another and in impingement at a short distance from the point of emanation from the nozzle.

From the structure described, it will be seen that three, groups of ports are provided, and the ports in each group cause the streams emanating therefrom to impinge at different distances from the nozzle. That is to say, the streams emanating from the ports 3| .and I9 impinge relatively close to the nozzle; the streams emanating from ports 25 and I9 impinge at a greater distance from the nozzle, while the two streams emanating from ports 31 and 38 impinge at a still greater distance from the nozzle.

In assembling the parts of the nozzle, the base member I is fitted within the shell 2 until the dished surface I comes into contact with the inner face of the end wall l5. To secure ready alignment of the parts, the disk portion 3 may be provided with a suitable key-way 40 for engagement with key provided on the inner face of wall [5. The top member 3 is pushed down into central opening 21 of shell 2 until the surfaces 43 located between groove ports 26 and 3|, come into abutment with complemental surfaces 2| on end wall IS. The stem 9 enters into the bore 33 of the top member as clearly seen in Fig. 1. The three parts, when cemented or otherwise secured together in the relationship described, form a sturdy, efficient nozzle.

While I have described the nozzle as being of a certain shape and construction, it will be obvious that the same may be altered in many ways without departing from the spirit of the invention. The location of, number, angle of emergence and disposition of the orifices may be changed in many ways to suit various requirements. These and other modifications will be apparent to those skilled in this art.

What I claim is:

1. A nozzle provided with a base member having a disk portion, an annular shell within which the disk portion is fitted, said shell having an end wall formed with radial grooves co-operating with parts of the disk in forming radial water passages, said passages terminating in orifices at the outer face of the end wall, the end wall having a central opening a top member fitted within the opening in the end wall, said top member having a plurality of spaced grooves co-operating with parts of the end wall in forming radial water passages terminating in orifices angularly disposed in relation to those which emerge from the end wall, and co-operating portions on the top member and base member for providing spaced angular orifices adjacent to the central portion of the top member.

2. A spray nozzle comprising, a shell having a circumferential side wall partly closed at one end by an end wall, said end wall having a central aperture, a base member having a disk portion fitted within the circumferential wall and in abutment with the inner face of the end wall, said inner face of the end wall being provided with a plurality of radial grooves co-operating with surfaces on the disk in forming water passages which emerge through the end wall at positions adjacent to the circumferential wall, the base member having a centrally located stem extending through the central aperture in the end wall, a top member having a portion fitted in said aperture and surrounding the stem, said aperture having grooves co-operating with the stern in forming spaced, angular water passages, said end member having grooves co-operating with surfaces on the end wall in forming water passages which are angularly disposed relative to those which emerge from the end wall near the circumferential wall.

3. A spray nozzle comprising, a disk having an opening, a stem located within the opening and spaced from the wall of the disk which surrounds said opening, a shell Within which the disk is fitted, said shell having an annular end wall in abutment with the inner face of the disk, the inher face of the end wall being formed with a plurality of grooves, said grooves and portions of the disk forming water passages terminating in orifices near the periphery of the shell, 2. top member fitted within the end wall of the shell and surrounding the stem, said top member forming water passages between it and the stem and between it and the end wall,the passages formed between the top member and the end well being angularly disposed to those which are formed between the end wall and the disk.

4. A spray nozzle comprising, an annular memher having an end wall, the inner and outer surfaces of said end wall being provided with radial grooves, a disk fitted within the annular member and having surfaces co-operating with the rooves on the inner surface of the end wall in forming radial water passages emerging through the end wall, a top member fitted within the end wall and having grooves co-operating with the grooved outer surface of the end wall in forming water passages emerging through said top at a distance from the passages emerging through the end wall, the several sets of passages being disposed angularly to one another whereby impingement of the several streams of water emanating therefrom will occur.

5. Aspray nozzl comprising, a base in the form of a disk having a, dished upper surfaceand a centrally located stem having a portion arising above said dished surface, an annular shell within which the disk is fitted, said shell having an end portion provided with a central aperture and having its inner face formed with grooves terminating in orifices located in spaced relation and located adjacent to the periphery of the shell, the dished surface of the disk being in abutment with the inner face of the shell end portion and cooperating with said grooves in forming water passages, a top member having spaced angular grooves co-operating with parts of the end portion in forming a second set of water passages terminating in orifices disposed at an angle to those in the first group, the stem being entrant into the top member and co-operating with portions of said top member in formin a pair of spaced angularly disposed orifices adjacent to the central portion of the top member.

of the nozzle to a source of water 6. A nozzle comprising a base formed with a disk and a central stem, a shell within which the diskis fitted, said shell having a central opening a topfitted within the central opening in the shell and surrounding the stem, the disk and shell having co-operating surfaces forming water passages; the top and shell having co-operating surfaces forming water passages, and the stem on the disk co-operating with internal portions of the top in forming water passages, said passages forming pairs, the passages in each pair being angularly disposed relatively to one another whereby impingement of the streams emanating therefrom takes place.

7. A spray nozzle comprising. a cup-shaped member having an apertured end wall, a disk having a threaded end portion for attachment supply, said disk fitting within the cup-shaped member and having a stem portion projecting through the aperture therein, a top member having a central opening through which said stem portion extends, said central opening having laterally extended portions co-operating with the surface of th stem over which they extend in forming a pair of water passages having converging end portions to thereby direct the streams passing therethrough toward one another, said top having slotted portions co-operati-ng with parts of the outer portion of the end wall in forming Water passages, the inner face of the end wall being slotted, said slots co-operating with a face of the disk in forming water passages, the last mentioned passages having portions angularly disposed relative to parts of the water passages formed by parts of the top and parts of the outer face of the end wall, said last mentioned angularly disposed portions being located between the side wall of the cup-shaped member and the, end wall of said member.

JOHN O. LEWIS.

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