US1923059A - Sprayer - Google Patents

Description

G. C. PHARO Aug. 15, 1933.

SPRAYER 2 Sheets-Shea?l l Filed Dec. 1'7, 1930 INVENTOR ATTORNEY;-

a @www lllll Allg. 15, 1933. G Q PHARO 1,923,059

SPRAYER Filed Dec. 17, 1930 2 Sheets-Sheet 2 www ATTORNEYS Patented Aug. 15, 1933 UNITED STATES ,l 1,923,059 PATENT OFFICE SPRAYER t Gordon C. Phare, Traverse City, Mich., assigner to Acmeline Traverse City, Mich., gan

Manufacturing Company, a Corporation of Michi- Application December 17, 1930 Serial No. 502,913

Claims.

of the constituent parts as for cleaning, compactA shipping, and the like, without reliance, to anything like the degree heretofore felt to be necessary, upon the use of solder or other molten assembling medium.

A further object of my improved invention lies in the direction of so forming and correlating the end of a pump element and its detachable connection with the supply tank that in the completed article no drip cup or other externally located equivalent element is necessary to take care of such unatomized residual portion of the fluid supply as has not been acted upon by the sprayer, and which, both for purposes of economy of material and general cleanliness of the eX- terior of the sprayer as a whole, it is desirable to return as promptly and reliably as possible to the supply tank for subsequent use.

My improved construction also Oilers to an unusual degree a protective surrounding of the necessarily quite small and easily injured supply ipe, upwardly through which the fluid in the supply tank is drawn by suctional action of the pump, for atomization by the outwardly projected air stream therefrom upon each ejecting stroke of the piston within the cylinder.

My preferred embodiment of the mechanism for attaining the foregoing results is illustrated in the accompanying drawings, in which:

Figure 1 is a side elevational view of my complete sprayer unit.

Figure 2 is ya similar View, on a larger Vscale and largely in section, bringing out the internal arrangement and functioning of the parts.

Figure 3 is an end elevational view of the sprayer mechanism as shown in Figure 2, being taken substantially along the lines 3 3 thereof and looking in the direction of the'arrows there shown.

Figure 4 is a detail elevational View partly in section of the end of the pump cylinder and of its supported sprayer nozzle, being taken along the line 4-4 of Figure 2 and looking in the direction of the arrows there shown.

A indicates a pump cylinder provided with a piston -B and the actuating stern C, the forward or r delivery end of the cylinder being provided with a discharge nozzle formed of the axially apertured threadedly interiitting couplings D, G, the latter comprising anipple having a threaded stem l projecting through an aperture in the head of the cylinder and through the abutting wall J of the upper neck portion of a supply tank (which will be hereafter referred to in g eater detail) ir 'o engagement with the nut 'j iortion. D. Suitable washers, as G', may of be positioned between the coupling-nozzle and the cylinder head andtank Walls. e coupling and nozzle members D, G, thus also serve to secure together the pump cylinder and tank. The exact form of the nozzle and its immediately associated parts here illustrated need not be strictly adhered to, however, so long as,

provision is made for the detachable mechanical association of the endwall of the cylinder and of the described upper or neck portion of the supply Indeed, were it not for the objections to the use oi solder, both from the standpoint of manufacturing costs and of unreliability oi the assemblage of the parts when supposedly completed, the end wall E of the cylinder and a correspondingly contoured face ofthe supply tank neck J might be assembled thus without the use of the double coupling.

In my improved construction, however, the outer nozzle member G- serves the additional function of supporting substantially perpendicularly to its axis the upper end of the supply tube H, which depends therefrom into the supply tank and to a point quite closely adjacent the bottom wall thereof, Ybeing completely though spacedly enclosed by the walls of the latter, and thus throughout its length being protected against abrasive injury. For reasons of added structural firmness, that portion of the supply tube relatively near vits top end may, if desired, be passed through the annulus N which serves to separate, though not entirely cut ofi intercommunication between, the upper chamber P within the ring and" the lower chamber Q', of the supply tank as a whole communication holes as N being left in the wall N, to permit Lmvaporized fluid which accumulates in the upper chamber P of the supply tank to return by gravity to the lower chamber Q, thus economizing the material used and preventing' dripping without the necessity of providing any such part as an external drip cup.

In substantially diametrical alignment with the aperture in the annular wall J of the upper chamber of the supply tank through which the nozzle extends, is a discharge aperture L, through which the atomized vapor is projected to the atmosphcrein the manner described.

It will thus be noted that not only are the air nozzle G and its supported end of the supply tube l-l spacedly and thus protectively surrounded by the walls of the upper chamber P of the supply tank7 but as well access to the end of the nozzle, as for the preliminary steps of effecting the disyassemblage of the parts, may be had through the discharge aperture L, and that if for some reason all of the fluid drawn upwardly through the supply los tube H be not atomized bythe use of the nozzle F, there is a very appreciable space separating the nozzle and the end of the supply tube from the wall N of the upper chamber' of the supply tank, into which space the unatomized particles fall,

subsequently to flow through the apertures Ny therein to the lower supply chamber Q.

The formation of the supply tankas a whole in the contour shown, while not essential, is desirable in that it forms a very firm seat for the assembled engagement thereagainst of the head E of the pump cylinder, which is fitted into a depressed boss portion J of the upper tank wall. The similarly depressed opposed portion-of the front half of the tank in which the discharge aperture L is formed cooperates with the boss J to form a seat and support for the ring N defining chamber P. Itis also to be noted that the tapering of the bottom wall of the supply tank as at K enables the lower end of the supply tube H to be so positioned relatively thereto as to effectively exhaust practically the entire supply of.

uid before its replenishment becomes necessary, and that this supply is held available to suction action of the lower end of the supply tube H, whether the sprayer as a whole be held in substantially horizontal position, or downwardly inclined, or upwardly inclined position.

Moreover the herein disclosed construction of the supply tank as a whole in the form of two drawn halves of sheet metal suitably correlated as by the bead Y reduces the probability of leakage such as would be present if the tank had a greater number of wall seams. This, however, neither contributes to nor detracts from the functioning of the sprayer and duid-return parts as a whole, since, subject to the objections as to leakage, or in case a glass container were used, breakage, other forms of supply tanks could be substituted for that here illustrated with-out departing from the fair spirit of my invention.

What I claim is:

1. In a sprayer, in combination with a manually operable pump including a cylinder, a cylinder head provided with an outlet, a supply tank having a substantially flat upper rear wall tightly fitted against and partly intertting with said cylinder head, a pair of centrally boredthreadedly intertting combined coupling and nozzle members extending through and securing together the cylinder head and said tank Wall, a supply pipe within said supply tank and positioned at its upper end by one of said coupling members, said pipe having its upper end in huid-delivery relation to said nozzle and its lower end spacedly adjacent the bottom of the tank, a partitioning member separating the upper and lower portions of the tank and surrounding said nozzle couplings, the tank having an aperture in its front wall directly opposite the nozzle couplings, through which fluid may be ejected, and through which access may be had to the nozzle couplings to enable manipulation thereof.

2. In a sprayer, a supply tank comprising a plurality of dished sheet metal members seamed together and having opposite upper at wall portions and an upper chamber within that portion of the tank between said at walls, said tank also having a larger lower chamber, an apertured partition separating said members, a pump member having a terminal apertured head seated against and secured to one of said flat tank walls, the opposite at tank wall having a mixture discharge aperture therein, the abutting head and at Walls having a continuous air discharge aperture therethrough and in alignment with the mixture discharge aperture, and a liquid delivery conduit opening at one end in and near the bottom of the tank and at the other adjacent the air discharge aperture.

v 3. In a sprayer, in combinati-on with a supply tank having a relatively attenuated top portion the walls whereof are provided with diametrically oppositely located apertures, a pump member having an air outlet end secured to one of said tank walls to discharge through the aperture therein, the tendency of air so discharged being to continue through and out the opposite aperture, a uid supply tube leading from a point near the bottom of the supply tank to a point operatively adjacent the air outlet of said pump member', means for disassemblably holding the several parts in assembled relation comprising nut and bolt means having a jet aperture therethrough and securely projected through the air outlet of the pump and the cooperating aperture in the tank to secure the pump and tank together, the upper end of said supply tube being also supported by the nut and bolt means.

4. In a spraying device, a cylindrical pump body having a head with an air 'discharge aperture therein, a tank having a reduced upper portion with substantially parallel and iiat opposite walls, said lat walls having opposed aligned apertures therethrough, the pump head being arranged adjacent one of said walls with its aperture registering with the aperture in the wall, means for securing the pump to the tank comprising thread- 'l t edly interiitting coupling members having a jet aperture therethrough extended through said registered apertures and having clamping portions LUS overhanging and tightened to secure the pump cylinder head and tank wall together', a liquid supply tube extending downward into the tank and opening at its upper end adjacent the jet aperture, the opposite aperture in the opposed flat wall being larger than the jet aperture and in sub- M stantial axial alignment therewith, whereby atornized fluid may be ejected therethrough and access may be had to a portion of the coupling means. 5. In a spraying device, a cylindrical pump body having a head with an air discharge aperture therein, a sheet metal tank having a reduced upper portion with substantially parallel and flat opposed walls, said walls being formed with vopposite and aligned inset portions having apertures therethrough also in substantial axial alignment,

the pump cylinder being projected into one of said inset portions with its head seated against the bottom of the same and the air discharge aperture registering with the aperture in said inset portion, threadedly intertting combined coupling and nozzle members having an air discharge aperture extending therethrough and securingly passed through the registered apertures in the cylinder head and said inset portion to secure the pump and tank together, a liquid feed tube extending into the tank and terminating at its upper end in the path between the aligned air discharge aperture and the opposed aperture in the wall of the other inset portion, said last mentioned aperture serving as an outlet for atomized fluid, and

exposing to access the interior portion of the noz- '3"' zle and coupling members.

GORDON C. PHARO.

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