US 2569081 A
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G. W. VEACH SPRAY NOZZLE Sept. 25, 1951 l Filed Jan. 14, 1949 Patented Sept. 25,1951
UNITED STATES PATENT OFFICE SPRAY NOZZLE George W. Veach, Red Hook, N. Y. Application January 14, 1949, Serial No. 70,979
The present invention relates to improvements in 'spray nozzles and has for a primary object to provide a device which is capable of delivering 'an atomized spray for a great distance,
Another Aobject of the invention is to provide ya spray nozzle having means for whirling multi- 'trated a preferred example of the invention,
Figure 1 is a front elevational view of the nozzle;
Figure 2 is a side elevational View of the same;
Figure 3 is a longitudinal section taken along the plane of line 3-3 of Figure 1;
Figure 4 is a front elevational view of an inner a.
part of the nozzle; and
Figure 5 is a side elevation of the same.
Referring to the drawing wherein like characters of reference designate corresponding parts throughout, I0 indicates an essentially tubular body the inner larger end of which has exterior screw threads I I. The outer reduced end of body II] has a non-circular, advantageously hexagonal exterior contour I2v and is provided with a threaded bore I3. The larger bore of the body, indicated at I4, is shouldered inwardly of bore I3, as indicated at I5.
On the externally threaded end of the body is tted a cap having internal threads 2I in its annular flange 22 engageable with threads II. In the center of end wall 23 of the cap is provided a frusto-conical orifice 24 having a decreasing taper from its outer planar face 25 to a relatively short cylindrical bore 26. The circumference of cap 20 is advantageously knurled, as indicated at 21.
Fitted within the larger bore of body I0 is a fluid guide 30, in the form of a nat circular plug having a snug sliding fit in the forward end of the body and bearing against shoulder I5.
The forward face of guide member is held spaced from the inner face of cap 2i) by a packing ring 3I and a spacing ring 32. Packing ring 3| is of resilient packing material, such as rubber,
and is interposed between the forward end of body I0 and a disk 33 of relatively thin metal Sor like material held at against the inner face of the cap. At its center disk 33 has a relatively small discharge aperture 34 coaxial with the outlet opening 24 of the cap. Spacing ring 32 Tis an annulus of metal or other suitable material fitted between the packing ring and the front of plug 3D, the inner end of the spacer being bevelled, as shown at 35, so that its inner end terminates in a thin edge meeting the guide plug adjacent its circumference. The internal diameters of the packing and spacing rings approximately correspond to form a cylindrical chamber between disk 33 and the guide member.
The guide member or plug 30 has a central bore formed with a spiral rib 3B coaxial with aperture 34 of the disk. In its circumference, plug 30 is provided with a plurality of, in the present example four, grooves 3l directed at an angle, in the embodiment shown approximately 45, to the axis of the plug and preferably tapered longitudinally so that the ends have greater depth than the center part, as shown at Figure 4. In that part of the plug substantially medially of its axis and its circumference are provided four through bores 38 having a circumferential angularity of approximately 30 with respect to the axis.
The nozzle is assembled by slidably inserting plug 30 into the end of body III until it abuts shoulder I5. Ring 32 is then fitted against the plug, Disk 33 is placed within the cap and resilient ring 3| fitted against its circumferential margin. 'Ihe cap is then screwed on the body until ring 3| is tightly compressed.
The water, spraying solution or other liquid to be sprayed is delivered into the rear end of the nozzle assemblage under pressure through a suitable conduit, such as pipe 4U. The uid is caused to flow through and issue from guide 33 in multiple streams, the center ribbed bore directing a substantially solid whirling discharge. The angularly directed circumferential and intermediate passages 3l and 38 discharge a plurality of streams describing vortices about the center discharge.
The whirling streams issuing centrally, circumferentially and from intermediate positions of the axis of the guide and body commingle in the chamber provided between plug 30 and disk 33 to effect a whirling motion of the fluid causing delivery through aperture 34 and the flaring discharge orifice, of a ne spray which can be projected for a relatively great distance,
This makes the device particularly useful in 3 spraying tallas well as smaller trees and fire lighting.
It will be obvious to those skilled in the art that various changes may be made in the invention without departing from the spirit and scope thereof and therefore the invention is not limited to that which is shown in the drawing and described in the specication but only as indicated in the appended claims.
What I claim as new and desire to secure by Letters Patent is:
1. In a spray nozzle, a tubular body having an inlet opening at one end, a cap normally closing the opposite end, and having an outlet opening therein, a guide member slidably fitted in said body and having a central and a plurality of peripheral passages for directing iluid therethrough axially of the body, said guide member having a plurality of passages intermediate the central and peripheral passages for directing streams at an angle to the axis of the body and to commingle with the central and peripheral streams in said chamber.
2. In a spray nozzle, a tubular body, al cap tted on the outlet end of said body, a guide member fitted within said body and having hat parallel end faces, said guide member having a 4 central passage therethrough, a plurality of grooves in its periphery and a plurality of spirally directed passages intermediate the center passage and periphery, and an annular member fitted in said body between the guide member and cap to provide a mixing chamber, said annular member having that end directed toward the guide member bevelled so as to direct the streams from the peripheral grooves toward the axial center of the chamber.
GEORGE W. VEACH.
REFERENCES CITED The following references are of record in the ille of this patent:
UNITED STATES PATENTS Number Name Date 220,277 Forster Oct. 7, 1879 848,995 Hull Apr. 2, 1907 1,163,591 Eneas Dec. 7, 1915 1,202,051 Gibbons Oct. 24, 1916 1,230,725 Kraus June 19, 1917 1,395,442 MacGregor Nov. 1, 1921 1,513,624 Parker Oct. 28, 1924 2,110,409 Veach et a1. Mar. 8, 1938 2,213,928 Gold et al Sept. 3, 1940