US2522928A - Spraying nozzle - Google Patents

Description

Sept. 19, 1950 CARROLL 2,522,928

SPRAYING NQZZLE Filed Nov. 18, 1947 l/l/ II l /llllill W NESS Q 251 Jam/6.911 Carr 0g 63 BY M i I ATTORNEYS.

Patented Sept. 19, 1950 SPRAYING NOZZLE James M. Carroll, Philadelphia, Pa., assignor to Monarch Manufacturing Works, Inc., Philadelphia, Pa., a corporation of Pennsylvania Application November 18, 1947, Serial No. 786,567

This invention has general reference to liquid spraying nozzles and, more particularly, relates to nozzles designed to emit a direct sheet-like or flat flow of the liquid to be dispersed in fine particles. Nozzles of the type referred to for agricultural and horticultural usage for spraying water, insecticides and so forth under direct pressure, are customarily equipped in the jet end of the nozzle with a round disc having a fine bore or axial orifice, such disc being provided on one side witha V-section recess or groove centrally across the orifice and a corresponding section groove on the other side of said disc disposed at right angles in respect to the first mentioned groove. Frequently, when forming one or the other of thegrooves aforesaid the disc has been slightly swiveled under the milling cutter with resultant lateral expansion of the outer ends of the groove against which the liquid being sprayed is delivered under pressure, whereby a sheet-like emission results that invariably includes substantial edge jets or streams. These heavy edge jets measured for instance one inch 3 Claims. (Cl. 299--136) from the edge of the spray, or two inches out of I an eighteen-inch width spray jointly comprise as much as 50% of the total liquid sprayed which is very objectionable and disadvantageous when an even spray is desired.

In farm work; for instance, it is common practice to attach a numberof these nozzles at determinate intervals along a liquid supply pipe or boom so that the sheet-like spray edges meet; with the result that a very large amount of the sprayed liquid is deposited more or less along mergent lines due to the heavy jet-areas or streams aforesaid. In other words, the known manner of fiat or sheet-like spraying is objectionable in that the liquid being sprayed is unevenly deposited with resultant differential degrees of saturation being imparted to the area treated.

It is a primary object of my invention to overcome the above noted disadvantages by providing an improved spraying nozzle of the indicated type so designed that it will effectively rid the flat or sheet-like spray from substantially any trace of edge streams or jets.

With the above stated general object, and ancillary advantages, in view, as will hereinafter appear or be specifically referred to, my invention essentially consists in the features of construction, combinations of elements and arrangements of parts hereinafter disclosed, and illustrated by the accompanying sheet of drawings; whereof:

Fig. 1 is a perspective view of one practical W 2 embodiment of my improved fiat spraying nozzle.

Fig. 2 is an enlarged axial longitudinal section taken approximately as indicated by the arrows II--II in Fig. 1.

Fig. 3 is a horizontal section, having a central part broken away, taken. as designated by the arrows III-III in Fig.2.

Fig. 4 is another horizontal section taken as indicated by the arrows IV--IV in Fig. 2.

Fig. 5 is a plan or outer face view of the nozzle tip disc. v

Fig. 6 is a plan view showing the reverse face of said disc. N

Fig. 7 is a horizontal section taken approximately as indicated by the arrows VII-VII in Fig. 2.

Fig. 8 is a similar, but broken-oil, sectional view to Fig. 2 offa modified form of my invention.

Fig. 9 is a horizontal section taken within the limits of the'arrows IX-IX in Fig. 8; and,

Fig. 10 is a longitudinal section of a slightly modified form of the nozzle body portion.

In describingthe forms of my invention exemplified in the drawings herewith, specific terms will be employedfor the sake of clarity, but it is to beunderstood thescope of said invention is not thereby limited; each such term being intended to embrace all reasonable equivalents which perform the same function for an analogous purpose.

Referring more, in detail to the drawings my improved fiat-spraying nozzle comprises a tubular body ll preferably embodying a polygonal shaped head I2 at one end, with the other end taper or pipe-threaded at [3; while the bore M of said body portion I l is relatively reduced, intermediate its ends, and screw-threaded at 15 for reception of a flow-diverting and distributor device.

This flow-diverting anddistributor device or unit, it is to be remarked, conveniently although not es'sentally, embodies a round-section head l6 having a screw-driver slit H in its outer face for seating or removing said device, as hereinafter explained; a relatively reduced stem portion l8; an intermedate exteriorly screw-threaded section I!) for engagement in the body-bore threadedportion l5 aforesaid; a further reduced stem portion 20; and a distributor head 2| preferably having a slightly coned terminal extension 22.

I addition it isto be noted that the section l-9 of the device or unit is provided with grooves 23, one of which is shown in Fig. 2.

Snugly fitting the bore I 4 of the body portion II, is a tubular-element or p1ug24 having the outer major extent slightly reduced at 25, and a closed end 26 shouldered at 21; said reduction 25 and shouldering 21 affording support for a suitable strainer sleeve 28 having its other end engaged in the bore M of the pipe-threaded portion of the body H, see Fig. 2. It is also noticeable the plug 24 is provided with opposing holes 29, proximate the closed end 26, and relativelyintervening longitudinal slots 30 enabling said plug to have friction grippage in the bore 14.

Fitted into a suitable recess 3| in the jet end of the nozzle portion l l is a circular disc 32 of the desired thickness and having a fine axial orifice 33 with an outer V-section concaved diametric groove 34, centrally of such orifice, and an inner reversely concaved groove 35 preferably disposed at right angles in respect to the center of the first mentioned groove 34, see Figs. and 6 to best advantage; or the jet portion H of the nozzle may be butt-ended and have the grooves formed therein, as shown in Fig. 10. The disc 32 is conveniently secured in the recess 3! by clinching over inwardly the surrounding edge of said recess, as indicated at 36, Figs. 2 and 8. Or, thenozzle portion may be in the'form of a unit ll, see Fig. and, have the orifice 33 and V-section grooves 34', 35 embodied therein, as readily understood by those conversant with the. art, all other parts corresponding with those previously described being designated by like reference characters to avoid unnecessary repetition.

Referring now to Figs. 8 and 9 it will be seen that the modified type of fiow and distributor device is in the form of a unit as before set forth, that is to say it embodies a head IS, with a screwdriver slit ll, a short stem portion [8, and a screw-threaded section IQ for engagement in the body portion threaded bore l5. Attention is directed to the fact,however, that the distributor device or unit, in this form of my invention, is provided, with an axial bore 31; that the stem section 38, forwardly of the screw threaded section I9, is of the same diameter as the spreader head 2! previously described; and that said section 38 includes a slightly coned end 39 inwardly of which are diametrically opposed distributor apertures 40.

.I-Iaving described the structural aspects of the embodiments of my invention it is well to note that the slightly coned forward end 22 or 39 of the respective flow and distributor devices are drivenv into contact with the inner face of the respectively associated nozzle-tip disc 32 or the corresponding butt-end of Fig. 10; also that the pressure influenced liquid being sprayed is sup plied to the rear or inner face of said disc but not directly into the disc-slot 35, with substantially complete or total elimination of edge jets from the fiat spray emitted by the nozzle, dependent upon the size of orifice 33 and the diameter and curvilinear formation of the respective grooves 35, 34, incidental to obstruction of direct flow of' liquid to and through the disc groove 35 or 35 of Fig. 10. It is to be further particularly observed that the apex of the'respective coned ends 22 or 39 must be central relative to the orifice 33, and'a portion of the distributor head must contact and seat against the rear of the spray disc 32, or in the case of Fig. 10 against the inner flat end of the bore [4' to form an obstruction for suitably directing the flow to the slot 35' and orifice 33'. It will also be observed that the coned extension 22 of the distributor head 2| has a seating contact with the inner face of the disc 32 which is of less diametrical extent than the groove 35 and is seated intermediate the diametrical extremities of said groove. It will also be understood by those conversant with the art that when the distributing device is properly seated the spray will be maintained without any variable tendency, and devoid of side jets of relatively greater volume.

While my invention has been described with particularity it is obvious that modifications in the details will suggest themselves in adapting said invention to other forms but all such modifications are contemplated as fall within the terms and scope of the following claims.

I claim:

1. A spraying nozzle comprising a tubular body having a tip with a central orifice therethrough and diametric grooves in the inner and outer faces thereof and which relatively intersect said orifice; a flow-diverting distributor device within the bore of said tubular body, said device having a head with a seating surface thereon providing a seating contact of less diametrical extent than the groove on the inner face and being seated against the inner face intermediate the diametrical extremities of the inner groove; and said device and inner groove forming ports to produce indirect fiow of liquid under pressure into the inner groove of the tip whereby side streams in the spray are prevented.

2. A spraying nozzle comprising a tubular body having a tip with an axial orifice therethrough and a diametric groove in the inner and outer faces thereof, said grooves having opposed curved section walls and intersecting said orifice; a fiowdiverting and distributor device Within the bore of said tubular body, said device having a head with a seating surface thereon providing a seating contact of less diametrical extent than the groove'on the inner face and being seated against the inner face intermediate the diametrical extremities of the inner groove; and said device and inner groove forming ports to produce indirect flow of liquid under pressure into the outer ends of the inner groove in the nozzle tip whereby side streams in the spray emitted from the nozzle are eliminated.

3. The invention of claim 1 wherein the forward terminal extremity of the distributor insert is slightly coned outwards for contact with opposed edges of the nozzle tip inner groove; and wherein said insert is provided with a lengthwise bore having angularly related flow outlets therefrom in proximity to said forward terminal extremity.

JAMES M. CARROLL.

REFERENCES CITED 7 The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 825,290 Barker July 10, 1906 1,094,124 Coen Apr. 21, 1914 1,151,258 Fischer Aug. 24, 1915 1,500,384 Hagerman July 8, 1924 1,828,463 Hammers Oct. 20, 1931 1,917,216 Bersted July 11, 1933 1,940,171 I-Iuss Dec. 19, 1933 2,121,741 Lusher June 21, 1938 2,242,680 Schacht May 20, 1941 FOREIGN PATENTS F Number Country Date 441,542. Germany Mar. 3, 1927

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