US3009655A - Spray nozzle devices - Google Patents

Description

Nov. 21, 1961 J. E. PALMER 3,009,655

SPRAY NOZZLE DEVICES Filed Jan. 18, 1960 //1 wen/Zr.-

Jo/m E. Pa/me r 3,009,655 Patented Nov. 21, 1961 3,009,655 SPRAY NOZZLE DEVICES John E. Palmer 1439 17th Ave. SE., Calgary, Ontario, Canada Filed Jan. 18, 1960, Ser. No. 3,122 Claims. (Cl. 239-547) This invention relates to new and useful improvements in spray nozzle devices of the type which are used on booms of machinery employed in agricultural spraying operations, and in particular the invention concerns itself with certain improvements in the device disclosed in my earlier Patent No. 2,544,176, issued on March 6, 1951.

In accordance with the teachings of my earlier patent, there is provided a nozzle device having a body which is adapted to be clamped in position on a pipe or boom without being screwed thereto in the manner of conventional spraying nozzles. The body of the device carries a spraying tip and a filter which extends through an apertu-re into the pipe, a gasket being provided between the pipe and the body to prevent leakage.

While this form of construction is generally satisfactory, it requires a spraying tip and a filter of special design, so that it is not adapted for use with standard, conventional tip and filter units such as are available economically on the open market.

It is, therefore, the principal object of the present invention to provide a spray nozzle device embodying a standard, conventional tip and filter unit, whereby the same may be economically produced and readily installed on any pipe or boom, and which may be easily adjusted with the use of one wrench only.

An important feature of the invention resides in the provision of improved means for sealing the device against leakage, such means being in the form of a resiliently compressible bushing which renders the assembly virtually leakproof and is used in place of the simple gasket provided in my earlier invention.

Another important feature of the present invention resides in an improved arrangement of parts which eliminates the use of lock nuts used with conventional nozzle tips and permits adjustments of alignment to be made by only one wrench in place of two which are required when lock nuts are employed.

Another important feature of the invention arises from its use of standard, conventional tip and filter units as aforesaid, which units are readily available in a large variety of difierent sizes of filtering and spraying orifices, the arrangement of the invention being such that the tip and filter units maybe quickly and easily interchanged in the use of the same device. I

With the above more important objects and features in view and such other objects and features as may become apparent as this specification proceeds, the invention will be understood from the following description taken in conjunction with the accompanying drawing, wherein like characters of reference are used to designate like parts and wherein:

FIGURE 1 is a vertical sectional view of the invention in situ on a pipe or boom;

FIGURE 2 is a side elevational w'ew thereof;

FIGURE 3 is a top plan view showing the lower portion of the clamp body per se;

FIGURE 4 is an elevational view of the bushing used in the invention; and

FIGURE 5 is a fragmentary sectional view, similar to that shown in FIGURE 1 but illustrating a slightly modified embodiment of the invention.

Referring now to the accompanying drawing in detail, particularly to FIGURES 1-4 inclusive, the spray nozzle device is designated generally by the reference numeral 10, being mounted on a suitable pipe or boom ,1,1 having an aperture 12 formed therein. I,

As in my Patent No. 2,544,176, the device embodies in its construction a body 13 which constitutes one portion of a clamp, a complemental portion 14 of which is connected to the portion 13 by a hinge pin 15 journalled in a pair of ears 16 on the portion 13. The clampportions 13, 14 are also provided with apertured ear-s17,

having a clamping bolt 18 extending therethrough, whereby the entire device may be securely mounted on the pipe 11 without being screwed thereto.

The clamp body portion 1.3 is formed with a frusto- I v conical socket 19 and with an inturned annular rim 20 at the minor, outer end of the socket, the rim 20 defining an opening 21 which, of course, is smaller than the minor diameter of the socket. The socket is adapted to receive therein a frusto-conical bushing 22 formed from suitable resiliently compressible material such as rubber, neoprene, or the like, the outerend of the bushing abutting the rim 20 as shown, while the inner end of the bushing is provided with a concave surface 23 to sealingly engage the pipe 11.

The bushing 22 is also formed with an axial bore 24 and with an annular groove 25 intermediate the ends of the bore, the purpose of which will be presently explained.

The device is adapted for use with a standard, conventional tip and filter unit such as is readily available on the open market, but without the usual screw-threaded body and lock nut with which the standard units are furnished. As such, the device utilizes the filter 26 and the spraying tip 27 of the standard unit, the filter and tip being secured together by a suitable screw 28 and having abutting annular shoulders 29, as shown.

The filter and tip are positioned in the bore 24 of the bushing so that the abutting shoulders 29 are disposed in the groove 25 and the tip 27 projects outwardly through the opening 21 to discharge the spray. The filter 26 extends through the aperture 12 into the pipe 11.

When the device is assembled on the pipe as shown and the bolt 18 is tightened, the body portion 13 of the clamp will firmly press the concave surface 23 of the bushing 22 against the pipe 11. Similarly, the shoulders 29 will be snugly held in the groove 25 and the rim 20 Will urge the bushing in snug engagement with the portion of the tip 27 embraced thereby, so that as a whole, the resiliently compressible bushing will prevent any leaks occuring at the connection of the device to the pipe. As illustrated, the lower end portion of the filter 26 is also snugly embraced by the bushing and the cooperating frusto-conical configuration of the bushing and socket 19 will assist the bushing in making a leakproof seal upon tightening of the clamp bolt 18. I

The bushing is prevented from rotating in the socke 19 by a pair of elongated detents 30 which are formed integrally with the major end portion of the bushing at diametrically opposite sides thereof and are received in elongated recesses 31 formed at corresponding points in the major end portion of the socket.

Inasmuch as no lock nuts'are employed, the alignment of the tip 27 may be effected by using only one wrench, and similarly, the entire device may be applied to the pipe by theuse of one Wrench only. The filters 26 of standard units are available in a variety of different sizes of screen mesh, and similarly, the tips 27 are availablein a variety of differently sized orifices. It will be apparent that the different sizes of filters and tips may be very easily interchanged in the same device, as required, the filter and the tip being readily removable from and insertable in the bushing 22 by simply spreading the resilient bushing FIGURE illustrates a slightly modified form of the invention wherein the filter 26a is carried by a stem having an externally screw-threaded portion 32 which threadedly engages the bore 24 of the bushing 22a. Otherwise the arrangement of parts is the same as already described.

While in the foregoing there have been described and shown the preferred embodiments of the invention, various modifications may become apparent to those skilled in the art to which the invention relates. Accordingly, it is not desired to limit the invention to this disclosure, and various modifications may be resorted to, such as may lie within the spirit and scope of the appended claims.

What is claimed as new is:

1. In a spray nozzle device, the combination of a body adapted to be clamped to a pipe without being screwed thereto, said body being provided with a frusto-conical socket having its minor diameter at its outer end and also being provided with an inturned annular rim at the outer end of said socket defining an opening smaller than the diameter of the socket, a frusto-conical bushing of resiliently compressible material provided in said socket and having its outer end in sealing engagement with said rim, the inner end of said bushing having a concave surface adapted for sealing engagement with the stated pipe, said bushing being provided with an axial bore adapted to register with an aperture formed in the stated pipe and coaxial with said opening of the socket, said bushing also being provided with an annular groove intermediate the ends of the bushing, and a standard conventional filter and tip unit sealingly mounted in the bore of said bushing and having the tip portion thereof projecting outwardly through said opening, the filter portion of said unit being adapted to extend into the aperture in the stated pipe, the tip and filter portions of said unit having abutting annular shoulders sealingly disposed in said groove.

2. The device as defined in claim 1 wherein said socket is provided at one side thereof with a recess, together with a projecting detent provided at one side of said bushing and disposed in said recess, whereby to positively prevent rotation of the bushing in the socket.

3. In a spray nozzle device, the combination of a body adapted to be clamped to a pipe without being screwed thereto, said body being provided with a frusto-conical socket having its minor diameter at its outer end and also being provided with an inturned annular rim at said outer end defining an opening smaller than the minor diameter of the socket, a frusto-conical bushing of resiliently compressible material provided in said socket and having its outer end in sealing engagement with said rim, the inner end of said bushing having a concave surface adapted for sealing engagement with the stated pipe, said bushing being provided with an axial bore adapted to register with an aperture formed in the stated pipe and coaxial with said opening of the socket, said bushing also being provided with an annular groove intermediate the ends of the bushing, 21 standard conventional filter and tip unit sealingly mounted in the bore of said bushing and having the tip portion thereof projecting outwardly through said opening, the filter portion of said unit being adapted to extend into the aperture in the stated pipe, the tip and filter portions of said unit having abutting annular shoulders sealingly disposed in said groove, said body being provided a opposite sides of the major end portion of said socket with longitudinally extending recesses, and elongated projecting detents provided at opposite sides of the major end portion of said bushing and disposed in said recesses, whereby to positively prevent rotation of the bushing in said socket.

4. The device as defined in claim 3 wherein said filter and tip unit includes an externally screw-threaded stem threadedly engaging the bore of said bushing.

5. The device as defined in claim 1 wherein said filter and tip unit includes an externally screw-threaded stern threadedly engaging the bore of said bushing.

References Cited in the file of this patent UNITED STATES PATENTS 2,544,176 Palmer Mar. 6, 1951 2,641,509 Yost June 9, 1953 2,690,355 Waters et al. Sept. 28, 1954 2,946,518 Wahlin July 26, 1960 :UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,00%655 November 21 1961 A John E. Palmer- It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

In the grant line 3 and in the heading to the printedspecification lines 3 and 41 for "Calgary Ontario Canada". each occurrence, read Calgary, Alberta Canada Signed and sealed this 8th day of May: 1962,

(SEAL) Attest:

ERNEST w SW DAVID L. LADD Attesting Officer Commissioner of Patents

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