US2896865A - Spray head - Google Patents

Description

28, 1959 w. K. HAMILTON 2,

SPRAY HEAD Filed April 28, 1953 IN V EN TOR.

dim 5M1 ted States SPRAY HEAD I William K. Hamilton, Bangor, Mich., assignor to W. L.

Hamilton & Company, Bangor, Mich., a corporation of Michigan Application April 28, 1953, Serial No. 351,649

5 Claims. (Cl. 239-521) atent O and covers a wide area and is propelled to a substantial distance.

Third, to provide a spray head having these advantages which does not clog in use and the parts of which may be readily disassembled for cleaning, and reassembled.

Fourth, to provide a spray head having these advantages which may be very economically produced and one in which the width and direction of the spray may be varied by changing one element.

Objects relating to details and economies of the invention will appear from the description 'to follow. The invention is defined and pointed out in the claims.

A preferred embodiment of the invention is illustrated in the accompanying drawings, in which:

Fig. 1 is a side elevational view of a spray head embodying my invention partially in longitudinal section on a line corresponding to line 22 of Fig. 3.

Fig. 2 is a fragmentary side elevational view of the spray head of my invention removed from the tubular support or mount.

Fig. 3 is a fragmentary elevational view looking from the left of Figs. 1 and 2.

Fig. 4 is a top view of the spray head body member with the impact member removed.

Fig. 5 is an inverted view of the impact member of Figs. 1, 2 and 3.

Fig. 6 is a modified form of the baflie member for pro ducing a spray of approximately half the width of Figs. 1 to 5.

Fig. 7 is a fragmentary inverted view of another form of baflie member adapted for producing a narrow spray, more narrow than that of Figs. 1 to 5 inclusive.

In the accompanying drawing the adapter or coupling member 1 is adapted to be mounted on a standpipe or other discharge pipe of a pressure spraying apparatus. The spray head body member 3 has a threaded portion 4 threaded into the upper end of the adapter 1 and has a tubular extension 5 with side openings 6. The end of the extension 5 is closed by the plug 7, the purpose of this is to provide a uniform delivery of the fluid to the discharge passage 8 of the body member. This discharge passage opens into a flat or plain surface 9.

The body member has an open segmental recess 10 which in the structure illustrated extends an extent of approximately 240. The inner wall 11 of this recess 10 coacts with the bore of the passage 8 in defining a segmental lip-like orifice element 12 which in the embodiments of Figs. 1 to 5, inclusive, is of approximately 180 in extent, the face of the orifice element being in the plane of the face of the body member.

The baffle member 13 is desirably of the same peripheral dimensions as the upper end of the body member and is detachably secured thereto, as by means of the screws 14, the screws are disposed through holes 141 in the baffle member spaced to register with the threaded bores 15 in the body member. The baffle member has a flat forwardly inclinde impact surface 16 which is spaced from the orifice element 12 of the body member and coacts therewith to provide a discharge orifice 17 which is of gradual and uniformly increasing width from the front of the orifice to the rear thereof.

The bafile member 13 in the embodiment illustrated has an outwardly opening recess 18 opposed to and complementing the recess 10 in the body member and desirably of the same area as the recess 10 in the body of the spray head. The inner wall 19 of the recess 18 has substantially the same general irregular curvature as the wall 11 of the recess 10. The rear wall 19 is forwardly inclined from the central point thereof as is best shown in Fig. 5. The baflle member desirably partially closes the discharge passage 8 by overlapping the same as shown at 20 in Fig. 1, serving to restrict the discharge at this point and also acting to direct the discharge forwardly into the slot-like discharge orifice.

In the embodiments shown in Figs. 1 to 5, the dis charge orifice is approximately 180 in extent.

In the embodiment shown in Fig. 7, the impact surface 21 corresponding to the impact surface 16 is approximately in extent and in this embodiment agreater portion of the discharge passage 8 is covered, that is, the restriction is greater than that in Figs. 1 to 5. The baffle member 22 is otherwise the same as the bafile-membe'r 13 and these baflie members may be interchangeably used, the baffie member 13 being used when a spray of approximately spread is desired, the baffie member 22 being used when a spray approximating a 90 spread is desired.

In the embodiment shown in Fig. 6, the baffle member 23 is provided with an inclined impact surface 24- extending over somewhat more than one-half the arc of the impact surface 16 with the result that the fan-like spray is directed sidewise, that is, sidewise as compared to what may be regarded as the front in the embodiments of Figs. 1 to 5. These baflie members are interchangeable and it is deemed desirable that the user be provided with all three forms although for most work the baffles shown in Figs. 5 and 7 meet all requirements. The baffie shown in Fig. 6 is particularly desirable for spraying low objects such as grapevines and weeds along a roadside.-

The fan-like spray produced by my spray head is substantially uniform throughout thewidth thereof and has a relatively long throw which, of course, is subject to the pressure on the liquid sprayed. The parts may be produced very economically and it is not likely to clog even where the sprayed mixture contains solids, which is common for various types of sprays. The adapter or coupling 1 is ordinarily mounted on the standpipe or other conduit which is adjustable to permit directing of the spray 7 up or down as may be desired. This, however, will be understood by those skilled in the art to which my invention relates.

I have illustrated and described my invention in commercially desirable embodiments thereof. I have not attempted to illustrate or describe other adaptations or embodiments as it is'believed that this will be understood by those skilled in the art.

Having thus described by invention, what I claim as new and desire to secure by Letters Patent is:

1. A spray nozzle comprising a main body element having a longitudinally extended jet-producing bore therethrough, a spreader element, carried by said'body' element, spacer means overlying said bore spacing said spreader element axially from said body element in intersecting relation to a'projection of said bore, said spacer means having undersurfaces which converge downwardly toward said bore, one of said elements having a flat surface which is normal to the axis of the bore, and the' other of said elements having a fiat surface which slopes from said spacer means toward said normal surface and terminates in closely spaced relation thereto below the bore,

2. A spray nozzle comprising a body element having a flat face and a jet bore opening therein and normal thereto, and a spreader member of a cross sectional dimension corresponding to the body member detachably mounted thereon and having an integral segmental spacer portion and a forwardly inclined Spreader portion extending forwardly from the inner edge of the spreader portion in opposed spaced relation to the jet bore of the body member to be impinged by the liquid discharged from the bore and coacting with the face of the body member in defining a discharge orifice of increasing Width from front to rear, the inner edge of the spacer member constituting the rear wall of said discharge orifice, the edge of the discharge orifice being inwardly spaced throughout from the outer edges of said body and spreader members.

3. A spray nozzle comprising a body element having a flat face and a jet bore opening therein and normal thereto, a spreader member mounted thereon and having an integral segmental space portion and a forwardly inclined spreader portion extending forwardly from the inner edge of the spreader portion in opposed spaced relation to the jet bore of the body member to be impinged by the liquid discharged from the bore and coacting with the face of the body member in defining a discharge orifice of increasing width from front to rear, the inner edge 4 of the spacer member constituting the rear wall of said discharge orifice.

4. A spray nozzle comprising a body element having a flat face and a jet bore opening therein, and a spreader member of cross sectional dimension corresponding to the body member detachably mounted thereon and having an inwardly projecting forwardly inclined spreader portion disposed in opposed spaced relation to the jet bore of the body member and positioned to be impinged by the liquid discharged from the bore therein and coacting with the face of the body member in defining a segmental discharge orifice having a rear wall and of increasing width from front to rear, the edge of said raised portion of said f spreader member being substantially spaced inwardlyi from the edges of said body and spreader members.

5. A spray nozzle comprising a body element having a face and a jet bore opening therein, and a spreader member having a forwardly inclined spreader portion disposed in opposed spaced relation to the jet bore of the body member and positioned to be impinged by the liquid discharged from the bore therein and coacting with the face of the body member in defining a segmental discharge orifice having a rear wall and of increasing width from front to rear, the edge of said orifice being substantially spaced inwardly from the edges of said body and spreader members.

References ited in the file of this patent UNITED STATES PATENTS 1,133,711 Cornelius Mar. 30, 1915 1,297,374 Lutz Mar. 18, 1919 1,511,118 Fiduccia Oct. 7, 1924 1,766,126 Johnson June 24, 1930 FOREIGN PATENTS 557,686 France May 9, 1923 475,944 Canada Aug. 7, 1951 843,528 Germany July 10, 1952

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