US2553040A - Device for spraying upwardly or downwardly - Google Patents

Description

May 15, 1951 M. GREENE DEVICE FOR SPRAYING UPWARDLY OR DQWNWARDLY 2 Sheets-Sheet 1 Filed Jan. 2'7, 194? MIZl J BYZ y 1953 M. GREENE 2,553,040

DEVICE FOR SPRAYING UPWARDLY 0R DOWNWARDLY Filed Jan. 27, 19-47 2 Sheets-Sheet 2 INVENTOR. Mfaus QJ'eeqe,

Patented May 15, 1951 OFFICE DEVICE FOR SPRAYING UPWARDLY OR DOWNWARDLY Marcus Greene, Caldwell, N. J.

Application January 27 1947, Serial No. 724,517

This invention relates to improvements in spraying devices; and the invention has reference, more particularly, to a novel construction of portable spraying device for spraying a selected liquid or liquid mixture or a powder optionally in either upward or downward direction as may in any given case be desired.

The invention has for an object to provide a novel construction of portable spraying device comprising a reservoir to contain a supply of a liquid or liquid mixture or a powder desired to be discharged through a communicating spray nozzle mean with which said reservoir is provided, a manipulatable hand pump means for introducing and compressing air within the reservoir, whereby the compressed air will exert discharging pressure upon the liquid or powder content of the reservoir, and a novel manipulatable valve means between the spray nozzle means and the reservoir, said valve means havin ex ernal means for actuating the same to open and close communication between the spray nozzle means and the reservoir.

The invention has for a further object to provide a portable spraying device which is. characterized as above stated, wherein the manipulatable valve means is optionally movable to different open positions, whereby, in one such open position, the compressed air discharged content of the reservoir may be caused to spray from the spray nozzle means when the latter is upwardly directed, and, in another such open position, the compressed air discharged content of the reservoir may be caused to spray from the spray nozzle means when the same is downwardly directed.

The invention has for another object'to pro vide a novel portable spraying device of the kind stated, wherein the hand pump is detachably coupled to the reservoir subject to removal whereby to open a filling mouth through which a liquid or liquid mixture, or powder desired to be sprayed, can be poured into the reservoir; andwherein said hand pump, in addition to its air injecting and compressing function, can serve as the handle means for holding and directing the spraying device in use.

Other objects of the invention, not at this time more particularly enumerated, will be understood from the following detailed description of the same.

An illustrative embodiment of the invention is shown in the accompanying drawings, in which:

Fig. l is a side elevational view of the. novel portable spraying device according to 'this invention; and Fig. 2 is a top or nozzle end elevational view thereof.

l Claim. (Cl.29996) Fig. 3 is a fragmentary vertical sectional view, drawn on an enlarged scale, with the control valve means in closed condition; Fig. 4 is a similar fragmentary view, showing the control valve means in .a selected open position adapted to permit spray discharge from the nozzle means when the latter is upwardly directed; Fig. 5 isa detail cross-sectional view, taken on line 55 in Fig. 3 with the control valve means in closed position; Fig. 6 is "a detail cross-sectional view, taken on line 6-4; in Fig. 4, with the control valve means in the selected open position shown in said Fig. 4; Fig. 7 is a vertical sectional view similar to that of Fig. 3, but showing the device downwardly directed and the control valve means in another selected open position adapted to permit spray discharge from the downwardly directed nozzle means; Fig. 8 is a detail cross-sectional view, taken on line 8-8 in Fig. '7, with the control valve means in the selected open position shown in said Fig. '7; and Fig. 9 is a fragmentary cross-sectional view, taken on line 99 in Fig. 3, and showing the connection of an external 'actuating means with which the control valve means is provided.

Fig. 10 is a fragmentary sectional view similar to that of Fig. 7, but showing a modified arrangement adapting the device for spraying of a powder.

Similar characters of reference are employed in the above described views, to indicate corresponding parts.

Referring to the drawings, the novel portable spraying device according to this invention comprises a hollow reservoir member which may be variously made and shaped but which, as shown, preferably comprises opposed hemispherical shells, which for convenience may be designated an outer shell I I and an inner shell I2, the meeting marginal portions of which are joined together by a suitably formed coupling seam structure I3. 1

The reservoir member is provided at one end, which, as shown, is formed by the outer shell II, with an opening I4, related to which is a valve housing I5 having a boss I6 of reduced diameter, thus forming an intermediate shoulder 11. This valve housing I5 is disposed within the interior of the shell II, so that its shoulder I'I abuts the inner face of the marginal portion of the opening I4, with the boss I6 projecting exteriorly through said opening. The valve housing is affixed and sealed to the shell I I by brazing jorsoldering the same thereto, or in any other suitable or convenient manner. Extending axially through the valve housing I 5 and its boss I6 is a tapered bore forming an integral part of the valve plug. Ex-

tending axially outward through the valve plug i9 and its neck portion 2i is an outwardly open discharge passage 22 which is closed at its inner end. Extending radially inward from the periphery of said valve plug into communication with said discharge passage is a, valve port-23. Provided in the valve housing it, to extend radially inward from one side of its external periphery to the bore l8 thereof, is an inlet port 2 5 which communicates with the interior of the outer shell adjacent to the end wall thereof. Also provided in the valve housing 55, to extend 4 the outer end of the neck portion 2| of the valve plug. Said spray nozzle means may also be varied in form and structure. An illustrative embodiment of spray nozzle means, as shown, comprises an internally screw-threaded nozzle cap 3| having a central spray discharge aperture 32 in its outer end wall. Threaded into the interior of said nozzle cap,,so as to be locatedbehind and in suitably spaced relation to its outer end wall, is av deflector plug 33 which is provided with one or more oblique ducts 35 formed therein, to extend in communication between the discharge passage 22 of the valve plug l9 and an interior chamber 35 of the nozzle cap which underlies the discharge aperture 32. Said nozzle cap 3| is screwed onto the neck portion 2| of the valve plug I9, and is sealed thereto by a sealing washer radially inward from a point within the interior of its opposite side or wall to the bore 38, is a second inlet port affixed to the valve housing, to extend longitudinally from the inner free end thereof through theinterior of the reservoir member, and so as to terminate within the inner shell I: adjacent to the end wall thereof, is siphon tube 25, which connects in communication with said second inlet port 25. Said inlet ports 24; and 25 are so positioned that rotation of thevalve plug is in proper directions will optionally bring the valve port 23 into communication with one or the other thereof.

I The valve plug I9 is provided with means, disposed'exteriorly of the reservoir member, for rotating the same optionally to closed or to one or'the other of its open positions. This means comprises an actuating lever 72? which is curved to conform to and thus overlie the exterior surface of' the outer shell H of said reservoir member. Said lever 2'! is aflixed to the valve plug It by an end portion 28 having an opening 29 conformably shaped to receive and embrace the shank portion 26 of said valve plug |& (see Fig. 9); said end portion 28 being retained in operative coupled relation to said shank portion 2a by a nut piece 30, which is screwed over and down upon said neck portion 2| of the valve plug. As shown in Fig. 1, the exterior surface of the reservoir member shell H is inscribed with indicator means correlated to the closed and open positions of the valve plug Hi. In one illustrative form thereof, said indicator means comprises e. g. the legend Spray down which, when the actuating lever 2'! is turned to point thereto, indicates that the valve plug has been rotated to an open position which brings its valve port 23 into communication with the inlet port 24, whereby the valve means is opened to permit down spraying discharge of the content of the reservoir memher; the legend Spray up which, when the actuating lever 2? is turned to point thereto, indicates that the valve plug has been rotated to another open position which brings its valve port 23 into communication with the inlet port 255, whereby the valve means is opened to permit up spraying discharge of the content of the reservoir member; and an intermediate legend Closed which, when the actuating lever is turned to point thereto, indicates that the valve plug has neck 42.

been rotated to an intermediate position which or gasket 36 which is ,interposed between said nozzle cap and the adjacent nut piece 39. Pressure liquid or powder in traversing the oblique duct or ducts 34 is given a swirling movement, whereby to impart a fanning out of the same as it is ejected through the discharge aperture 32 of the nozzle cap, thus efiecting a breaking up of the ejected stream into a divergent spray issued from said aperture 32.

The reservoir member is provided at its opposite end, which as shown, is formed by the inner shell l2, with an opening 3'1, related to which is an internally screw-threaded bushing 38 adapted to project outwardly therethrough. Said bushing is provided at its inner end with an annular flange 39 adapted to abut the inner face of the marginal portion of the opening 3?. Said bushing with its flange is afiixed and sealed to the shell l2 by brazing or solderin the same thereto, or in any other convenient manner.

The bore of said bushing 38 serves as a filling opening through which a liquid, liquid mixture, or a powder, desired to be sprayed by operation of the device, may be introduced into the interior of the reservoir member.

Said bushing 38 also serves as a coupling connection for operatively attaching a hand pump to and in operative communication with the reservoir member. The hand pump comprises a 1ongitudinal tubular barrel or cylinder having afiixed thereto an inner end cap ii from which projects an externally screw-threaded coupler Said coupler neck 32 is sized to screw into the bushing 38, thereby detachably connecting the pump to the reservoir member in axially aligned relation to the latter. A suitable outwardly opening, preferably spring closed, check valve means 43 is carried by the coupler neck 42. The outer end of the pump barrel or cylinder 49 is closed by a perforate outer end cap 44 through which slidably extends the pump piston rod 55.

To the inner end of said piston rod 45 is aiiixed a pump piston 4%.: of suitable form. Aflixed to the outer end of said piston rod ii"; is a handle member 47 by which the pump can be operated.

In the use and operation of the described portable spraying device, assuming it is desired to spray a liquid or liquid mixture, such e. g. as an insecticide, disinfectant or other purpose liquid, the pump is detached from the reservoir member and a quantity of the liquid or liquid mixture, in amount adapted to partially fill the same, is filled into the reservoir member through the opening or how of the bushing 38. This having been done, the pump is again attached to the reservoir member in operative relation thereto. The pump being attached, the operator thereupon actuates the same to introduce and compress air within the reservoir member interior, whereafter the device is ready for use.

If it is desired to utilize the device so as to emit an upwardly discharged spray, by employing the pump as a handle means, the reservoir member is upwardly directed, thus upwardly directing the spray nozzle means. Preparatory to such operation, the valve actuating lever 21 is turned to point to the Spray up indication. Such movement of the lever 21 rotates the valve plug l9 from the closed position shown in Figs. 3 and 5 to the up-spraying open position shown in Figs. 4 and 6, in which latter position the valve port 23 is brought into communication with the inlet port 25 and siphon tube 26. Since the content of the reservoir member gravitates to the inner end of said reservoir member when the latter is upwardly directed, the inlet port 24 of the valve means becomes inoperative, so that the inlet port 25 and siphon tube 26 must be utilized to deliver the content of the reservoir member through the valve means for emission through the upwardly directed spray nozzle means. It will be obvious that the pressure of the air which has been compressed within the interior of the reservoir member unoccupied by the liquid, will force said liquid upwardly through the siphon tube 26 and thence through the valve means and spray nozzle means for emission from the latter. It will be understood that if, during the spraying operation, air pressure within the reservoir diminishes so as to be insufficient to project a satisfactory spray, the pressure may be renewed by actuating the pump, either while continuing to spray, or by temporarily closing the valve means and thereupon pumping up the air pressure before reopening the latter for continuation of the spraying operation.

If, on the other hand, it is desired to project a downwardly directed spray from the device, the reservoir member is reversed, so as to be downwardly pointed. In such case, the content of the reservoir member, under gravity, lodges in the outer end of said reservoir member, so that the content is removed from communication with the siphon tube 26, but covers the inlet port 24 of the valve means. Under these circumstances, the lever 21 is turned to point to the Spray down legend, thus rotating the valve means to register its valve port with said inlet port 24, so that the pressure liquid may thereupon flow out through the valve means to the spray nozzle means to efiect down directed spray emission from the latter.

As already intimated, the spraying device is also operative to spray a powder content from the reservoir member. If the device is to be used for powder discharge, it is desirable to guard the outlets of the valve means against choking by the powder. One suitable means to attain this end is shown in Fig. 10 and comprises a perforate screen element 50 arranged to surround the intake end of the valve housing IS in spaced relation thereto, so that the powder is prevented from forming a dense mass at the inlet port 24. Similarly, a screen guard or thimble 51 may be mounted over and in connection with the intake end of the syphon tube 26.

Having now described my invention, I claim:

In a portable spraying device having a hollow reservoir provided with a hand pump extending from its inner end and a discharge means at its outer end including an internal siphon tube, the combination which comprises said discharge means and including a valve housing intersecting the wall of the reservoir so as to provide an interior portion and an exterior portion, said valve housing having a tapered axial bore, a correspondingly tapered valve plug extending through and rotatable in said bore, said valve plug having an outwardly open axial discharge passage, a spray nozzle means threaded onto the outer end of said valve plug with which said discharge passage communicates, said nozzle means comprising a cap having an axial discharge aperture and an obliquely channeled deflector plug within said cap adapted to swirl the spray discharged from the nozzle means, the interior portion of said valve housing having diametrically aligned oppositely extending inlet ports in its walls, said valve plug having a single transverse radial port leading to the discharge passage, and an actuating lever connected with the outer end of the valve plug operative to selectively position the valve plug either to close said radial port or dispose the same in communication with a selected inlet port of the valve housing.

MARCUS GREENE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,191,991 Pearsons July 25, 1916 1,261,311 Smith Apr. 2, 1918 1,276,353 Hansen Aug. 20, 1918 1,326,927 Hall Jan. 6, 1920 1,878,472 Dodelin Sept. 20, 1932 2,154,941 Kampschulte Apr. 18, 1939 2,165,696 Charter July 11, 1939 2,181,186 Jackson Nov. 28, 1939 2,290,594 Keith July 21, 1942 2,421,183 Cakebread May 27, 1947 FOREIGN PATENTS Number Country Date 441,018 Great Britain Jan. 10, 1936 441,082 France May 18, 1912

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