US1639294A - Sprayer - Google Patents

Description

Aug. 16, 1927.

H. D. HUDSON SPRAYER Filed Jan. 2'4, 1925 Patented Aug. 16, 1927.

i UNlTEDA STATES HERBERT D. HUDSON, F MINNEAPOLIS, MINNESGTA.

SPRAIYER.

Application led January 24, 1925. Serial No. 4,440.

My invention relates to hand-operated sprayers of the cylinder and piston type such as are especially adapted for spraying fly-destroying solutions, disinfectants, germicides and the like, and provides an extremely simple and highly important device for preventing such liquids or solutions from leaking. or running over the exterior of the sprayer. Many of the solutions or lo liquids used in these sprayers contain oil and others contain chemicals that will soil or damage furniture or articles upon which the sprayer is laid, and which, moreover,

.make the sprayer objectionable in handling. Such leakage and running vof the liquid from the sprayer is due to several causes.

For instance, as sprayers of the above type have hitherto been constructed, air is confined in the fluidvtank from which the liquid delivery tube is extended in such a way that, when the tank is vslightlyheated, as'

when'placed in the sun, the air thereby expanded Within the tank, (which tank has usually been made air-tight except through its oil delivery tube), will force oil out through the said oil delivery tube and this will run over a considerable surface of the sprayer and will soil things coming into.

contact with the sprayer. Another cause of leakage is due to dribbling from the sprayer. Of course, capillary attraction will cause a spreading of the oil or spraying fluid over much ofthe surface of the sprayer.

I have found that, by the proper application of a drip cup or pocket to the front end of the sprayer, immediately below the discharge oric'e thereof, drippings resulting.

from the actions above described willA be caughtr and prevented from runnin over the exterior of the tank and cylin er. I have further found that, by opening a vent or drain passage from the lower p ortion of the pocket into the upper portion of the tank, air expanded into the tank will escape and will not force the liquid out through the delivery tube; and, moreover, that if the said drain passage be made in the form of a tube, splashing of the liquid from "the tank into the pocket may be prevented.

In the accompanying drawings, which illustrate the invention, like characters indi# cate like parts throughoutthe several views.

Referring to the drawings:

Fig. 1 is al view partly in side elevation and partly in vertical axial section, showing a sprayer embodying the invention; and

Fig. 2 is a front elevation of the sprayer.

Of the parts of the sprayer, the numeral 3 indicates a pump cylinder, the numeral i the piston equipped piston rod andthe nu.- meral 5 the transversely disposed cylindrical liquid-containing tank that is secured to the lower front end portion of the cylinder by solder or other means, and, as shown, is provided with a removable filler cap 6. The cylinder head 3a at the discharge end thereof is provided Ywith the customary small air discharge orifice 7. The numeral 8 indicates a liquid delivery tube extended from the bottom of the tank and secured with its open upper end terminated 'ust below the air discharge orifice 7 so t at the liquid from the tank will be discharged with an atomizing action when air is discharged under pressure through said orifice.

The drip cup or pocket is formed by a sheet metal iange 9 that is `cut to fit agalnst the lower half portion of the cylinder head 3a in which the orifice 7 is formed, and to it the adjacent portion of the tank 5, and, of course, is soldered or otherwise secured to said cylinder'head 3 andtank with liquidtight joints. It is important to note that the upper portion of this drip cup 9, extends the full Width or diameter of the cylinder head 3, so that it will catch the drippings from the said cylinder head, but that at its forward portieri it is drowned below the axial line of the discharge orifice 7 so thatY it will not disturb the normal discharge of the air.

'lhe numeral 10 indicates a small drain tube that is applied to the interior of the 'tank 5 and extended from the bottom of the drip cup 9. l f

From the fore oing, it is obvious that the dripcu'p applic as described, or in any similar manner, will catch the drippin s resulting from the causes above enumera By setting the delivery end of the cylinder down into the top of the spray tank, a very ood connectionmay be made between t e c linder and tank and. more# over, by. app yin the drip cup to the tank and to the end o the cylinder substantially as described, the said drip cu is caused'to act as a brace to reinforce t e connection between said cylinder and tank.

What I claim is:

l. A spra er comprising a ump .having a. iston.A an cylinder, the cy inder having a ead with an orifice therein, a tank having-a seat formed in its wall to receive a portion of substantial arcuate extent of the lower side only of the ump cylinder, the under side only of the orward end of the pump cylinder being fitted into the seat and soldered thereto, a drip cu litting against the side of the tank and t e lower half of the cylinder head and fastened to both the tank and cylinder head, and a tube extending from the opening in the cylinder head down through the side of the tank and to a point near the bottom of the tank.

2. A sprayer comprising a pump piston and cylinder having a head with an orifice therein, a tank soldered in a line along the side of the cylinder, a tube extending from near the bottoni of the tank with its upper end terminating just below the orifie in the cylinder head and a drip cup formed of a single sheet of metal bent around the upper end of the tube and havingits lower edge soldered along the side of the tank and its side edges along the head of the cyl# inder.l

In testimony whereof l allix my signature.

HERBERT D. HUDSON.

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