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Publication numberUS3596835 A
Publication typeGrant
Publication dateAug 3, 1971
Filing dateDec 26, 1968
Priority dateDec 26, 1968
Publication numberUS 3596835 A, US 3596835A, US-A-3596835, US3596835 A, US3596835A
InventorsSmith Jane M, Smith Raymond D
Original AssigneeSmith Jane M, Smith Raymond D
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Adjustable turret spray nozzle
US 3596835 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

United States Patent (72] Inventors Raymond D. Smith;

- Jane M. Smith, both 014704 N.W. 61st St.,

Oklahoma City. Okla. 73122 [21] Appl No. 787,097 [22] Filed Dec. 26. 1968 [4S] Patented Aug.3, 1971 [54] ADJUSTABLE TURRET SPRAY NOZZLE 5 Claims, 5 Drawing Figs.

[52] US. Cl 239/394 [Sl] lnt.Cl A62c 31/02 [50] Field of Search 239/394, 487, 395, 396

[56] References Cited UNITED STATES PATENTS 2,790,680 4/1957 Rosholt 239/394 3,225,972 12/1965 Brumbach.. 239/394 X 2,569,081 9/1951 Veach 239/487 X 3,377,028 4/1968 Bruggeman 239/394 Primary Examiner1.l0yd L. King Assistant Examiner-Gene A. Church Attorneys-Clarence A. OBrien and Harvey B. Jacobson ADJUSTABLE TURRET SPRAY NOZZLE The present invention generally relates-to crop-spraying equipment and more specifically to a spray nozzle attached to a spray pipe afiixed along the trailing edge'of the wings of am aircraft employed in crop spraying or dusting. In conventional crop spraying apparatuses, a pipe having a closed at its inner end.

plurality of spray nozzles-affixed thereto-is mounted'along the trailing edge of the wings ofan aircraft used for thispurpose. Such spray nozzles conventionally include a dischargeorifice of a particular size which will discharge a predetermined quantity of material dependent .upon various factors including the size of the orifice itself. If it is necessary to change the size of the orifice, the nozzle either has to be completely replaced or disassembled and a different-sized orifice cap or plate associated therewith.

Accordingly, it is an object of the present invention to provide a spray nozzle having an adjustable turret "or plate mounted thereon having circumferentially spaced orifices of different sizes which may be selectively aligned with a discharge passageway thereby controlling the characteristics of the material being discharged including controlling 'the quantity of such material. One portion of the rotatable plate or turret is imperforate so that the noule may be completely shut off if necessary for calibration.

Another object of the present invention is to provide an adjustable spray nozzle incorporating -a sleeve in the flow passage in sealing engagement withnthe adjustable rotatable plate which includes spiral passageways through which liquid must pass to enter the nozzle orificetherebydischarging the spray material in a spiral swirling; pathfor 7 more efficient atomization and spreading thereof.

Still another feature of the present invention is to provide a spray nozzle which is relatively simple in construction, easy to attach to existing equipment, easy: to adjust and relatively inexpensive to manufacture.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof,-wherein like numerals refer to like parts throughout, and in which: 1

FIG. 1 is a perspectivev view'of the 'spray nozzle of the present invention incorporated into a crop-spraying aircraft wing structure illustrating the general relationship to the wing;

FIG. 2 is a vertical, sectional view taken substantially upon a plane passing along section line 2-2, on an enlarged scale, il-

' lustrating the specific constructiomof the-'adjustable spray spiral passagesformedtherein for swirlingthe spray material.

Referring now specifically to the drawings the numeral 10 generally designates the spray nozzle of thepresent invention which includesa body 12 attached to a spraypipe 14 affixed in any suitable manner to thetrailing-ed'ge of an aircraft wing 16 in a manner well known to those inthe art of crop spraying or crop dusting. The body 12 includes a tubular pipe-l8 which extends rearwardly and terminates in a screw-threaded'end" portion 20 to which the nozzle 10 is screw threadedly connected as illustrated in FIG. 2.

The nozzle 10 includes a generally circular or cylindricalbody 22 provided with an internally threaded axially extending neck or boss 24 which isin screw threaded engagement with-the threaded. end 20 of the pipe or nipple 1 8. The neck or I boss 24 has a passage 26 therein communicated with an angu-- lady-extending passageway 28 that'extends to and is in com-- munication with an axially extending bore- 30. which is Centrally in the body 22, there is providedan inwardly extending and internally threaded bore 32 which communicates with theoutcr surface of the body 22 and which receivesa conventional screw-threaded fastener 34 "whichi"'s ecures a rotatable nozzle plate 36 in position on the b'dd'y22l Diametrically opposedtothebore 30, the body 22 includes a blind bore 37 receiving'a ball detent 38 and a compression spring 40 inwardly of the ball detent 38. The spherical ball detent 38 is urged outwardly of the bore 37 by the spring 40' which has one end seated in the bottom of the bore'37 and the other end engaging the spherical ball detent 38.

Disposed within the bore 30 is a hollow cylindrical sleeve 42 having an O-ring seal 44 in a groove on the exterior surface thereof in sealing engagement and sliding engagement with k the interior surface of the bore 30. The center of the sleeve 42 is provided with a longitudinal bore 46 communicating with an open inner end and having an end plate 48 forming a closure for the outer end thereof which is substantially flush with the outer surface of the body 22 for engagement with the interior surface of the nozzle'plate 36. A coil spring 49 is interposed between the inner end of the bore 30 and the inner end of the sleeve 42 for urging thesleeve outwardly for retaining the end plate 48 in contact with the nozzle plate 36. Also, provided in the end plate 48 is a plurality of spirally arranged passageways 50" which communicate the hollow interior bore 46 with the outer surface of the end plate 48 so that any liquid material discharged through the passageways or orifices 50 will be tion surface being frustoconical in configuration as indicated at numeral 58 in FIG. 2 to provide protection for the nozzle plate and to generally limit the angle of discharge of the material being discharged through the nozzle plate 36.

The inner surface 54 of the plate 52 is provided with four circumferentially spaced recesses 60 three of which have apertures or orifices as at 62, 64 and 66 which are progressively larger in diameter with one of the recesses 60 being imperforate. The recesses are selectively alignable with the sleeve .42 and the surface of theend plate 48 having the spiral passages 50 therein so that material passing through the passages 50 will be swirled through the orifices 62, 64 and 66. The exterior surface of the plate 52 is also providedwith three frustoconical recesses 68 in communication with the orifices 62, 64 and 66 respectively for providing an outwarddiverging angle for the discharge of material through the respective orifices.

The planar inner surface 54 of the rotatable plate 52 is sealed to the body 22 by an O-ring seal 70 received in a peripheral recess 72 in the outer end surface of the body 22 and the spring detent 38 will retain the nozzle plate36 in adjusted position but the plate may be gripped and rotated to the next position for adjusting the size of orifice aligned with the passageway 50 in the sleeve 42 thus eliminating the necessity of employing tools or the like for removing one orifice'plate and-reassembling another orifice plate with thcdischarge'nozzle. An index marker may be provided on the plateif desired' and suitable indicia provided thereon to indicate the particular size of the orifice and, if desired, the plate'may be positi'oned for completely closing the nozzle for whatever purpose desired;

The adjustable-spray nozzle is attached to a pipe affixed along the trailing edges of the wings'of an aircraft used in crop spraying or crop dusting and replaces the conventional spray noale' which operatesin'a manner well known in the art. The

spray nozzle of this invention does not change the operation procedure in crop spraying or dusting and enables the orifice size of the nozzle to be easily changed without tools by rotating the turret or plate to the desired orifice size in a rapid and efficient manner. This structure also enables the nozzle to be completely shut off if necessary for calibration or for any other purpose. The device may be constructed of various noncorrosive or corrosive resistant materials so that it will effectively retain its working characteristics and also, the particular structure of the nozzle itself provides an effective control for the discharge rate and also an efficient atomization and spreading of the spray material due to the angulation of the passageways and -the swirling discharge pattern provided thereby.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.

What we claim as new is as follows:

1. A spray nozzle comprising a body having a passage therein communicating with a source of material to be discharged, a plate movably mounted in relation to said body and overlying the passage therein, said plate including a plurality of orifices therethrough for selective alignment with the passage, said orifices being of different sizes to vary the rate of discharge of material from the nozzle, and means in said passage for imparting a turbulent flow to the material being discharged through an orifice in the plate, said orifices being oriented in circumferentially spaced relation in a circular pattern in said plate, means mounting the plate on said body for rotational movement about an axis centrally of the body and thecircular pattern of the orifices, and means interengaging said body and plate for releasably locking the plate in rotatably adjusted position in relation to the body, said means for imparting turbulent flow consists of a sleeve, spring means biasing the sleeve toward the rotatable plate, said sleeve having a closed end engaging the plate, said closed end of the sleeve having a plurality of angulated passageways therethrough for imparting turbulent flow to the material.

2; A spray nozzle comprising a body having a passage therein communicating with a source of material to be discharged, a plate movably mounted in relation to said body and overlying the passage therein, said plate including a plurality of orifices therethrough for selective alignment with the passage, said orifices being of different sizes to vary the rate of discharge of material from the nozzle, and means in said passage for imparting a turbulentfiow to. the material being discharged through an orifice in the plate, said orifices being oriented in circumferentially spaced relation in a circular pat tern in said plate, means mounting the plate on said body for rotational movement about an axis centrally of the body and the circular pattern of the orifices, and means interengaging said body and plate for releasably locking the plate in rotatably adjusted position in relation to the'body, said plate including a plurality of recesses on the inner surface thereof forming an inlet for each orifice with the recesses aligned with the passage, said means interengaging the body and plate including a spring-biased ball detent mounted within said body, wherein said recesses in the inner surface of the plate are spherical in configuration for receiving the ball detent and enabling rotation of the plate by overcoming the force exerted by the spring-biased ball detent, the entire plate being forward of the body of the nozzle and the plates periphery being disposed outwardly of the periphery of the body for ease of grasping thereof with the periphery of the plate being roughened for preventing slippage of the hand when manually grasping the plate and rotating it about an axis identical with the center line of the body of the nozzle.

3. The structure as defined in claim 2, wherein said means for irnpartin turbulent flow consists of a sleeve, s ring means biasing the s eeve toward the rotatable plate, sai sleeve having a closed end frictionally engaging the plate, said closed end of the sleeve having a plurality of angulated passageways therethrough for imparting turbulent fiow to the material.

4. The structure as defined in claim 3 wherein said springbiased sleeve includes a seal on the periphery thereof in sealing engagement with the passage with the seal enabling longitudinal sliding movement of the sleeve within said passage.

5. The structure as defined in claim 4 wherein said body including peripheral groove at the end thereof adjacent the plate, and a seal disposed in said groove and sealing the periphery of the plate to the body.

Patent Citations
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Classifications
U.S. Classification239/394
International ClassificationB05B1/16, B05B1/14
Cooperative ClassificationB05B1/1654
European ClassificationB05B1/16B3B2