US2991945A - Gun type sprayer - Google Patents

Description

July 11, 1961 J. J. ROSENKRANZ GUN TYPE SPRAYER 2 Sheets-Sheet 1 Filed Aug. 2'7, 1959 49 FIG.'5

INVENTOR.

JULES J. ROSENKRANZ ATTORNEY FlG.5

FI G.4

y 1961 J. J. ROSENKRANZ 2,991,945

GUN TYPE SPRAYER Filed Aug. 27, 1959 2 Sheets-Sheet 2 INVENTOR. JULES J. ROSENKRANZ Unite This invention relates to a gun type sprayer and more specifically to a sprayer having a valved nozzle including dual, adjusting means for varying the character of the discharging stream.

Heretofore, the known gun type sprayer could be ad justed to form a desired kind of spray only by the operators ability to depress the sprayer handle a given amount intermediate its limits and to manually maintain the handle at that position. Any deviation from this position would alter or change the character of the spray. For this reason it was virtually impossible for an operator to manually maintain any intermediate spray position between the two extreme limits, i.e. the open and closed positions of the sprayer, for any given length of time. Even in those sprayers in which an attempt had been made to provide for spray adjustments, it was virtually impossible to maintain a spray variation which falls intermediate the adjusted position and the extreme limit of such sprayer. Therefore the known sprayers had in actual practice only twopositive settings which could be effectively maintained. These were either the closed or adjusted position and the full open position.

Therefore an object of this invention is to provide in a gun type sprayer means for positively fixing and main taining a plurality of spray positions or variations which lie intermediate the extreme spray limits or setting of a sprayer.

Another object is to provide for further adjustment of the spray intermediate that of any two adjacent fixed positions.

Another object is to provide means for effecting Vernier adjustment to finely vary the character of spray in any of the fixed positions thereof.

Still another object is to provide a gun type sprayer which is relatively simple in construction, inexpensive to manufacture and positive in operation.

The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of the invention, its operating advantages and specific objects attained by its use, refer ence should be had to the accompanying drawings and descriptive matter in which there is illustrated and described the preferred embodiments of the invention.

In the drawings:

FIG. 1 is a side elevation view of a gun type sprayer of this invention, having a fragmentary part shown in section.

FIG. 2 is a fragmentary section view of the sprayer of FIG. 1.

FIG. 3 is an enlarged detail of the notches by which the character of the spray can be pre-set intermediate the extreme limits of the sprayer.

FIG. 3A is a section view taken along line 3A3A of FIG. 2.

FIG. 4 is a detail plan view of a wire detent utilized to fix the type of spray desired.

FIG. 5 is a sectional view of the wire detent taken along line 55 of FIG. 4.

FIG. 6 is a side elevation view of a modified form of the invention.

FIG. 7 is a fragmentary sectional side view of the embodiment of FIG. 6.

rates Patent 01 "ice FIG. 8 is a pictorial illustration showing the embodiment of FIG. 1 adapted to receive an insecticide sprayer attachment.

FIG. 9 illustrates the embodiment of FIG. 1 utilized in conjunction with a sprinkler.

Referring to FIGS. 1 to 5, the improved sprayer of this invention comprises a body 20 which includes a nozzle barrel 21 provided with a longitudinally extending bore 22 and a stem 23 connected thereto intermediate the ends of the bore 22. The lower end of the stem 23 is provided with a threaded coupling 24 which is adapted to receive an end coupling of a hose (not shown).

One end of the barrel 21 is provided with radially, inwardly extending flange or shoulder 25 to define a fluid discharge orifice 26. The other end of the bore is closed by an annular plug 27 threaded therein.

Extending longitudinally of the bore and slidably mounted therein is a needle valve 28A and connected valve stem 28, one end 28B of the stem 28 extending through the annular plug 27 and outwardly of the barrel. This end of the stem is threaded for receiving an adjusting knob 29. In order to seal the rear end of bore 212 fluid tight, the plug 27 is provided with a recess 30 forming a seat for an O packing ring '31, and a washer 32 is wedged between shoulder 33 and plug 27 to perfect the seal.

A shut off valve means is provided to valve the orifice.

As shown the shut off valving means includes a washer 34 in abutting relationship to flange 25, and valve member 35 fixedly secured to the valve stem 28. Referring to FIG. 3A, it will be noted that the valve member 35 is shaped as a rectangular or square member and is provided with a projecting annular lip 36 which is normally urged against the washer 34 to form a fluid tight seal thereat in the normal operating position of the valve member 35. A coil spring 37 is disposed about the stem 28 between washer 32 and a split ring or washer 38intermediate the ends of the stem to normally bias the valve member 35 in the closed or fluid sealing position.

A handle or trigger 39 is provided to simultaneously actuate the valving means 35 and needle valve 28A. As

shown, the handle 39 is pivotally connected to a lug 40 formed integral with the body 20 by means of a pivot or pin 41 intermediate the ends thereof. The upper end 42 j of the handle 39 is provided with an opening for receiving the adjusting knob 29. As shown, the knob 29 is provided with a knurled head 29A and a reduced shank 29B terminating with a radially extending collar or flange 29C. The flange 290 within the upper end '42 of the handle 39 prevents the adjusting knob from being rotated oil the stem 28 thus preventing loss of the knob 29. If

desired the upper end of the handle may be bifurcated for receiving the reduced shank portion 29B of the knob 29.

Thus it will be noted that the handle 39 is fixedly connected to the valve stem 28B and upon actuation, as by squeezing or depressing the handle, and thereby exerting a force against the bias of the spring causes the needle valve 28A, valve member 35 and stem '28 to be longitndinally displaced. When this occurs the fluid flows through the barrel and around the valve member 35 through the spaces 43 around lip 36 and out through the orifice 26. The relative position of the needle valve 28A to the orifice 26 controls the character of the spray such as varying degrees of course and fine streams.

If desired a hand guard 44 may be integrally formed as part of the handle to prevent pinching of the flesh between the thumb and the forefinger.

In order that the character of spray can be positively fixed and maintained at a plurality of positions intermedi- 1 ate the extreme limits of the sprayer, i.e. between the Patented July 11, 1961 open and closed position thereof, a novel pre-setting means is provided.

Referring to FIGS. 1, 3, 4 and 5, the upper end of the handle 29 is provided with a recessed or embossed portion 45 to which there is pivotally connected a wire detent 46. As best seen in FIGS. 4 and 5, the detent 46 is formed as a yoke having a pair of spaced arms 46A terminating with intumed end portions 46B which are received in openings on either side of the handle 39. Connecting the arms 46A and formed integrally, as shown, is a cross piece 46C, which is arcuate in form and angularly disposed relative to the arms. As shown in FIG. 1, with the yoke pivotally connected to the handle 39 and extending forwardly therefrom, the cross piece 46C is arranged to em brace the top of the barrel.

Located on top of the barrel 21 within the range of the yoke are a plurality of notches 47 at successively spaced intervals, each notch 47 representing a predetermined fixed position of the needle valve 28A relative to the orifice 26 and therefore a spray of some known and fixed character. As shown in FIG. 3, each notch 47 is preferably formed at a rearwardly inclined 45 slope, each notch being separated by a fiat 48. Preferably these notches 47 are formed at the rear end portion of an external, radially extending rib 49 running longitudinally along the top of barrel 21.

In the illustrated embodiment of FIG. 1, three notches 47 are shown each indicating a desired fixed character of spray. Thus in operation, if the operator desires to select a type of spray having a given or known character and to effortlessly maintain the same over a considerable period of time, he merely presses the handle or trigger until the yoke detent 46 drops into the selected notch 47. Once the yoke detent 46 is positioned in the selected notch 47 it may be maintained thereat indefinitely without any further effort on the part of the operator. It will be noted that as the handle 39 is moved from closed toward the full open or depressed position, the notches are formed so that the yoke detent 46 will ratchet from one notch to another in one direction only until the desired fix position is established. To go from one set position to another in the direction from full open to either closed or lesser setting, it is necessary to only manually lift the detent out of its notch and move the same to the next preceding notch. Thus with this arrangement the gun nozzle described can be adapted to be positioned at a plurality of fixed intermediate positions and be effortlessly maintained thereat in a relatively simple and positive manner.

In the event it is desirous to more finely adjust the character of spray, or to adjust the spray to positions other than those established by the notches, the adjusting knob may be resorted to. With the cross piece 46C of the detent raised to the position indicated by dotted line in FIG. 1 or riding on the flat 48 between notch 47, the adjusting knob 29 may be rotated to adjust the handle and connected needle valve at any position between any adjacent pair of pre-set positions. With the arrangement described, the adjusting knob 29 can also perfect vernier adjustments of the needle valve 28A for attaining very fine settings at any of the set positions. A feature of the arrangement described is that in addition to the fix settings which can be easily and quickly made, an infinite number of settings intermediate a pair of fix settings are also available, by the actuation of the adjusting knob.

In order to increase the versatility of the sprayer described, external threads 49 are provided adjacent the discharge end of the barrel 21. Thus the nozzle barrel 21 can be employed with various auxiliary attachments, such as a sprinkler 50 or insecticide sprayer 51 as illustrated in FIGS. 9 and 8, respectively.

Longitudinally extending ribs 52 spaced about the periphery of the barrel are provided to protect the threads 49 against injury due to dropping or banging. The ribs are formed so that an end portion 53 extends radially outward a greater distance than the threads so that any impact on the body tending to injure the threads 49 is taken by the raised portion 53 of the ribs 52.

FIGS. 6 and 7 illustrate a modified embodiment of the invention. This form is similar to that previously described except that the barrel 70 defining the nozzle is not formed with an external threaded portion adjacent the discharge end thereof, and consequently also does not have the protecting ribs 52 as hereinbefore described.

In this form, the means for positively establishing a spray of known character at a position intermediate the extreme limits of the sprayer, and for maintaining the same, comprises a cam surface 71 formed at the top, rear of the barrel 70, and a yoke detent 72 pivoted to the handle means 73 as hereinbefore described. As shown the cam surface slopes upwardly and to the rear and terminates at a downwardly sloping surface 74. With this arrangement two pre-set positions are established. These two positions are those defined by the extreme limits of the cam surface 71. In going to the full open position, the detent 72 rides up the cam as the trigger or handle 73 is depressed till it drops down surface 74. When this occurs the character of spray established is fixed and is effortlessly maintained until the detent is manually raised and restored to its normal position as seen in FIG. 6.

The form of FIGS. 6 and 7 is further distinguished from that of FIGS. 1 and 2 in that the coil spring 75 is compressed between the end packing washers 76 and the orifice shut off valving member 77, the latter being similar to that previously described.

In all other respects and the manner of operation, the embodiment of FIGS. 6 and 7 is similar to that of FIG. 1 as hereinbefore described.

With the arrangement herein shown and described, the character of the spray can be quickly changed to a plurality of set sprays of desired character by merely depressing the handle to set the detent at the proper setting. In addition, the character of the set spray can be finely adjusted by rotation of the vernier adjusting knob 29. Also the fixed or pre-set spray position can be effortlessly maintained over an indefinite period of time inasmuch as the detents 46 and 72 automatically maintain the respective needle valves 28A, 28A in the proper fixed position relative to their respective orifice for establishing the desired character of spray. Also the arrangements described are particularly adapted for establishing a desired character of spray quickly and accurately.

While in accordance with the provisions of the statutes there is illustrated and described herein the best form and mode of operation of the invention now known to the inventor, those skilled in the art will understand that changes may be made in the form of the apparatus disclosed without departing from the spirit of the invention covered by the claims, and that certain features of the invention may sometimes be used to advantage without a corresponding use of other features.

What is claimed is:

1. A gun type sprayer comprising a body having a tubular barrel with a bore extending longitudinally therethrough, one end of said bore defining a fluid discharge orifice, means for valving said orifice including an orifice adjusting needle valve and an orifice shut off valve, spring means normally biasing said shut off valve toward orifice closing position, means for sealing the other end of said barrel, means forming a fluid inlet intermediate the ends of said bore, said valving means including a valve stem extending longitudinally of said bore and having a portion thereof extending beyond said barrel and sealing means, a knob adjustably connected to said end portion of the valve stem, a handle pivoted intermediate the ends thereof to said body, said knob being received within the upper end of said handle whereby actuation of said handle effects movement of said valving means against the bias of said spring means, means for automatically pre-setting the needle valve of said valve means at any of a plurality of intermediate settings between [full open and full closed position of said orifice upon actuation of said handle, and said knob upon actuation thereof efiecting vernier adjustment of said handle and valving means at any of said intermediate pre-set positions of said needle valve.

2. The invention as defined in claim 1, wherein said automatic pre-setting means includes a detent pi-votally connected to the upper end of said handle, and a notched detent receiver on top of said barrel for retaining said detent in any of the preset positions.

'3. The invention as defined in claim 2, wherein said detent comprises a spring yoke having a pair of arms, each am having an inturned portion adapted to be received in said handle whereby said yoke is adapted to pivot between operative and inoperative position, and a cross piece connecting said arms, said cross piece being angularly disposed to said arms for embracing the upper end of said barrel and engaging said notched detent in operative position.

4. A gun type sprayer comprising a body having a tubular barrel with a bore extending longitudinally therethrough, one end of said bore defining a fluid discharge orifice, said barrel having an external threaded portion adjacent the discharge end thereof adaptable for receiving an auxiliary spray attachment, a plurality of external,

longitudinally disposed, radially extending ribs circumferentially spaced about said body to a guard for said threaded portion, means for valving said orifice, spring means normally biasing said valving means toward orifice closing position, means for sealing the other end of said barrel, means forming a fluid inlet intermediate the ends of said bore, said valving means including a valve stem extending longitudinally of said body, said stem having a threaded portion extending beyond said sealing means, a knob adjustably threaded to the valve stem, a handle pivoted intermediate the ends thereof to said body, said knob being received within the upper end of said handle whereby actuation of said handle eifects movement of said valving means against the bias of said spring means, means for automatically pre setting said valve means at any of a plurality of intermediate settings between full open and full closed position thereof upon actuation of said handle, and said knob upon rotation thereof eflfecting vernier adjustment of said handle and valving means at any of said pre-set adjusted positions of said valving means.

5. A gun type sprayer comprising a body having a tubular barrel with a bore extending longitudinally therethrough, one end of said bore defining a fluid discharge orifice, said barrel having external threads adjacent the discharge end thereof adaptable for receiving an auxiliary spray attachment, and external longitudinally, radially disposed rib extending along the top of said barrel, said rib having a plurality of spaced notches adjacent its rear end portion, means for valving said orifice, spring means normally biasing said valving means toward orifice closing position, means for sealing the other end of said barrel, means forming a fluid inlet intermediate the ends of said bore, said valving means including a valve stem extending longitudinally of said bore, said stem having a portion extending beyond said sealing means, a knob adjustably connected to the valve stem, a handle pivoted intermediate the ends thereof to said body, said knob being received within the upper end of said handle whereby actuation of said handle efiects movement of said valving means against the bias of said spring means, a wire detent pivotally connected to said handle, said detent being adapted to engage any of said notches to automatically pre-set said valve means at any of a plurality of intermediate settings between the full open and full closed position thereof upon actuation of said handle, and said knob upon actuation thereof effecting Vernier adjustment of said handle and valving means between any of said intermediate pre-set positions of said valving means.

References Cited in the file of this patent UNITED STATES PATENTS 616,629 OLally Dec. 27, 1898 927,593 Phillipson July 13, 1909 1,602,748 Browning Oct. 12, 1926 2,030,510 Grifliths Feb. 11, 1936 2,064,794 Klauminzer Dec. 15, 1936 2,657,098 Strahman Oct. 27, 1953 2,675,206 Lindberg Apr. 13, 1954 2,937,813 Rinkewich May 24, 1960 FOREIGN PATENTS 284,863 Great Britain Feb. 9, 192 8

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