US1976506A - Powder mixing and spraying device - Google Patents

Description

3 Sheets-Sheet l 1 N VEN TOR.

BY 6M Oct. 9, 1934. F. R. MAURER I POWDER MIXING AND SPRAYING DEVICE Filed Sept. 25, 1932 Oct. 9, 1934. F. R. MAURER POWDER MIXING AND SPRAYING DEVICE Filed Sept. 23, 1932 3 Sheets-Sheet 2 INVENTOR. fiD fi/VW/Pi/Z 640m, i1 *fiwfluif ATTORNEY.

Patented Oct. 9, I934 POWDER MIXING AND sPRnYrNG DEVICE 7 Frederick R. MaurrfDetroit, Mich; Application September 23,; 1932, Serial N0. 634, 516' aol ims (cite-84) I l I V in sideelevation of a somewhat modified form I This invention relates to powder mixing and spraying devices, and more particularly to a spraying device especially designed to be incorporated in a water pipe or hose line through v which water under pressure is delivered, to enable -the mixing of powders with such water, and spraying of the same in the form of a solution or mixture." An important object of this invention is the provision of a powder mixing and 10 spraying device which enables the spraying of insecticides mixed with water from the nozzle of an ordinary garden hose. A further object is the provision of such a spraying device the parts of which may be prin cipally housed within the hose itself in such 'manner that the hose constitutes. a powder container.

Still another object is the incorporation in such a device of improved adjusting means'e'nabling varying the quantity of powder mixed with the water flowing therethrough.

Still another object'lies in the provision of a mixing device which may be secured to a hose line either atits end or at some medial point, or in a water pipe, which device incorporates a relatively large powder container ar-' ranged outside thewater line, powder in which may be fed under pressure into the water flowing through the line.

'Other objects and advantages will be apparent from the following description, wherein reference is made to the accompanying drawings illustrating preferred embodiments of my invention, and wherein similar reference numerals designate similar parts throughout the'several 'views;

In'the drawings:

Figure 1 is a sectional view of the end of a garden hose, showing one form of my invention installed thereinvand fragmentarily showing a hose nozzle in side elevation;

Figure 2 is an end view of the body portion of" Figure 12 is a' view partly in sectionand partly of the invention, showing the same also adapted to uselin connection with agarden hose, but

with an outside powder container affixed there- Figure 3, taken substantially, on the line 17- 17 of Figure 16;

Figure 18 is a side view similar to Figure 4 of the adjusting screw employed in this form of my invention;

Figures 19 and 20 are plan and diametrical sectional views respectively of the garden screen employed in this embodiment;

Figure 21 is a view partly in cross section and partly. in side elevation of another somewhat modified form of the invention which is adapted to be inserted in a water line at any point;

Figure 22' is a sectional view taken substantially on the line 22-22 of Figure 21;

Figures 23 and 24 are plan and longitudinal sectional views respectively of the guard screen employed in this'embodiment;

'Figures'25 and 26'are' end and medial sectional views respectively of the mixing unit; a

Figure 2'7 is a side view of theadjusting screw, and

Figure 28 is a longitudinal section of the water-feeding tube.

Referring now to the drawings: Reference characteri30 designates a rubber garden hose, carrying at its end an exteriorly threaded coupling member- 32, shown as of'conventional design. To'the" coupling 32 an adjustable spray nozzle as "34 'is frequently connected, toenable variation of the character of the water jet? Between a the hose coupling 32 and the nozzle coupling 36 is a gasket, usually in the former a rubber washer 38. inserted spraying device; will be seen, to comprise the familiar garden hose and nozzle of the type generally used for wateringpurposes about homesand small gardens. To enable persons" gardening on a small scale, or growing fruit or ornamental, trees or bushes to spray their growing things with powdered insecticide solutions mixed with water without the necessity of mix This assembly, without; my

ing the powder with the water by hand and then forcing the solution or mixture from the nozzle a so,

tioned insecticide mixture.

of a special spraying device by means of a hand or special pump, and to provide similar convenient spraying means for those desiring to spray disinfectants, as in treating livestock, and for other purposes. I provide the mixing device shown installedi'n the hose' in Figure l','in con- The body portion 40 of the mixing device is a relatively small cylindrical metallic 'member,

formed as best shown in Ei gures 2 and 3 and carrying at its upper extremity a' flange 42, which flange is enlarged by an auxiliary flangelringf i ll The ,fiange ring 44'may be adapted to encircle the body member 40pbeneath the flange, toenable' the suspension [of thejdevice within 'the end of the hose by clamping theflangeformed by the portions, 42 4 41 between the coupling 32 and gasket 38. An aperture," the centralp'ortion of'which is designated 46', extends substantially axially through the body'of the mixing device, being" countersunk or otherwise enlarged at ,its rearextremity, as at 48, to form a funnel-shaped inlet portion intowhich'the powder is fed. The aperture is also formed with alreduced "and tapered front portion '50, one side of which is open to the partly cylindrical adjoining chamber {521m which the. cylindrical valve portion 54 of an adjusting screw 56 is'ad aptedto move to change the efiective sizeof the outletjportion of the aperture in a readily apparent manner; "The stem of the valve is threaded in a tapped, continuation 58 of the bore 52. ,On the from the bore 64.

opposit'eside'of the aperture46, also in the body of the mixing member, is a i'earwardly opening bore 60 having a laterally opening orifice '62 communicating. with'the portion 46 of the central powder'ieeding aperture and also havingvan' inclined communicating bore 64' terminating in the front faceof'thedevice' adjacent the powder feeding bore/50' 'Theaperture 64'is designed to dischargea jet: of water angularly from the mixing device and'toward the powder extruded from :theorifice'50'; injsuch'manner that they willbe quickly and thoroughly mixed within thev '66 forms, acoupling towhiclra relatively small flexible rubber tube may be'attachedby slippi'ng 'thesame' thereover."".The rubbertube '70,.-

coupling tube 66 and connecting passages form a water by pass. The unit is installedih the hoseby removing :the nozzle and pushingthe small tube 70 part way,d"own' .thereinto, a, short length of the small tube being left hanging out of'the e'ndlof thejhose, withthe mixing, unit attached thereto. The hose is then compressed as by stepping 'on it, at a point 'nearer its nozzle end than the container end of the inner tube '70. The hose 30 is then filled with the desired insecticide powder which may be hydrated lime, Paris green, arsenate of lead, or the like, or a mixture. The powder may be inserted in the hose with the aid of a funnel, the end of which may be easily inserted in the hose if the mixing unit is allowed to hang free outside the end of the hose at the end of the two or three extra inches of the tubing 70 left at the nozzle end in the manner described. After the hose has been filled with powder, the mixing unit is slid into and clamped in place by means of the nozzle coupling in the manner shown. When the water is turned on, the pressure upon the rear surface -0f the powder column tends to force'the powder through the central aperture 48-46 and from the orifice 50, while a quantity of the water is delivered directly to the nozzle through the tubes 70 and 66 and bore 64, the water so discharged mixing with the powder being extruded from the orifice 50. in the manner described. Acertain amount of the'by-passed water also passes through the aligned orifices 6268 connecting" the water and powder passages within themixing device, such water helping to force the powder from the nozzle and by itspressure loosening the same in mixing therewith. When the valve portion 54 of the adjusting screw is near the small outer end of'the orifice 50, the effective size'of the latter is reduced, and the amount of powder which can be forced thereintoto be mixed with the. by-passed water'is restricted, while when this, valve portion is moved inwardly touthe'position infwhich it is shown in dotted'lines in Figure l, the orifice is opened. and a larger area made effective.

Covering the rear of the mixing unit may be a. guard screen as '72, whichmay, as shown, be formed as a cap adapted to fit over the enlarged 1 5 counterbored portion 48 and prevent the passage of lumps of the powdered material'into the mixing device. The screen may. of course be perforated, as at '74 and 76, for the passage therethrough of thestem of the adjusting screw 56 1 and. the'coupling tube 66 respectively.

In Figures ,12 to 20 inclusive I have shown a somewhatmodified form of my invent ion in which a powder container, external to the end. of the hose to which the entire device is attached, is incorporated with a special coupling member which carries means for affixing a powderjar or can thereto and'for afiixing the assembly to the'end of the hose, together with a control valve and a mixing device for mixing; the powder and water, means for exerting pressure upon the powder and m'eans' forattaching a hosenozz'le' to the device, In Figure 12 reference character 130 indicates the hose, and 73 i designates the body of, the device, which forms '3 acoupling memberfor the hose, the powder jar 8'0" and the nozzle 134. Water' underpre'ssure' is delivered to the base of thefpowder mass within the jan 80'. through the water passage 82'.and

tube 84. Within the shell '78 'is arranged a 1 6:

in a manner analogous to the operation of the similar portions of the first described hoseinserted mixer. Water under pressure is delivered to the central portion 146 of the mixing device through the passage 162, which functions similarly to the aperture 62 of the first described embodiment, as does the water delivery borelfi i, through which Water is discharged from the mix ing device in such manner that it is instantaneously mixed with the powder extruded through the orifice 150 in like fashion. An adjusting-screw 156 is also provided, by means of which the rate of powder delivery may be regulated by turning the screw by means of a screw driver, (when the nozzle 134 is removed) and the space 137 above the mixing device, as well as the space within the rear portion of the nozzle, provides a mixing chamber in which the turbulence caused by the angular and forceful delivery of the water jet may similarly cause mixture of the water and powder. If a glass jar is used it is of course possible to see the amount of powder remaining therein at all times.

If desired a controlling valve 86 may be provided, adapted to be moved by the finger of the operator. For this purpose the finger piece 88 is provided, formed as an integrally bent over section of the valve stem 90, which finger piece is adapted to travel in a guide slot 92 formed in the body of the device as shown in Figure 12. The tendency of water pressure to maintain the valve in seated position may be augmented by compression spring 94, encircling the valve stem, and the stem may travel in a central aperture in the cork 96 which seals the aperture through which the stem passes. The cork may be retained in the enlarged upper portion 98 of the valve stem apertures by means of a spring washer 100, the form of which is best shown in Figure 15, locked in a suitable internal annular groove in the apertured portion 98 above the cork. This lock washer also forms a seat for one end of the compression spring 94, the other end of which bears upwardly against another washer 99 maintained in position upon the stem by the bend in its outer extremity. A suitable screen, as 172, may of course be arranged between the jar mouth and the powder inlet 148 of the mixing device, to guard the latter against being clogged by lumps.

Another somewhat modified form of my invention is shown in Figures 21 to 28 inclusive. This device will at once be seen to be analogous to the construction shown in the embodiment last described, but adapted to be inserted at any point in a hose or pipe line, remote from the nozzle if desired, and to feed powder into the water stream. The body portion 278 of the device may be formed as a screw cap for a jar 280, which may be of glass if desired, and a water inlet coupling member 230 may be carried by the top thereof and adapted to be screwed to a faucet or to the end of a water pipe. Through the water passage 282 water is delivered to the pressure pipe 284 which extends to a point adjacent the bottom of the jar in a manner similar to the arrangement of the pipe 84 of the last described embodiment, while a connecting passage 2'70 delivers water directly to the mixing unit 240 through the coupling tube 266 which discharges into the water jet passage 264 opening adjacent the powder outlet 250 in like manner. Water is also fed through the side connecting aperture 262 for preliminary mixture with the powder inthe-central sect'ion1246 of the powder orifice i'n'the mixing unit, in a manner similar toithe. operation of these portions of the first described embodiment. Apowder feeding ad;- justing screw 256 may also be provided, and the downwardly opening tapered aperture 287 in the cap 278 arranged to connect the mouth of the jar with the powderinlet 248 of the mixing unit in a manner which will bev readily apparent. A- screen, as 272, mayv of course be arranged across the open. lower end of. the

orifice .287'to similarly xprevent, the entrance of lumps of the powdered material into the mixing unit.

My improved mixing device is also utilizable for any spraying of powder in conjunction with an air hose connected to any suitable source of air under pressure, as a hand or mechanical pump. The air of course functions in substantially the same manner as the water in forcing the powder from the nozzle. I

While it will be apparent that the illustrated embodiments of my invention herein disclosed are well calculated to adequately fulfill the objects and advantages primarily stated, it is to be understood that the invention is susceptible to variation, modification and change within the spirit and scope of the subjoined claims.

What I claim is:

1. In combination with a flexible hose through which fluid under pressure is adapted to be delivered, a coupling carried by the end of the hose and a nozzle member removably secured to the coupling, means for mixing powder with fluid delivered by the hose, including a quantity of powder within the hose, a mixing device arranged between the powder mass and the nozzle, and a relatively small flexible tube secured to the mixing unit at one end and extending back into the hose away from the nozzle and open at its other end to provide a fluid by-pass through which fluid may be delivered to a point adjacent the nozzle without forcing it to percolate through the powder.

2. In combination with a flexible hose through which fluid under pressure is adapted to be delivered, a coupling carried by the end of the hose and a nozzle member removably secured to the coupling, means for mixing powder with fluid delivered by the hose, including a quantity of powder within the hose, a mixing device secured in the end of the hose and having a portion clamped between the nozzle and coupling members, said mixing device having powder and fluid delivery passages extending therethrough, and means connecting a fluid passage with a point in the hose farther from the nozzle than the powder mass extends, comprising a. relatively small tube connected to the mixing unit and extending and opening into the hose.

3. A fluid and powder mixing device for mixing powder with a stream of fluid under pressure, comprising a body having separate and terminally converging powder and fluid delivery passages therein terminating in adjacent powder and fluid outlets and connected by a by-pass through: comprising a Body 'rnernber' coupled to the hosev line and having an inlet opening therein through which it may receivewater irom'the hose, line, vsaidhody member havin also an outlet opening and appurtenant coupling portion 'tozwhi'ch a nozzlex is adapted to be secured, a

tures themimoiie connecting theinlet and outletopenings, another connecting said third openin and outlet, anda third. connecting the inlet and vthe interior of; the chamber portion of the mixingmeans, whereby to deliver fluid material :1

from both I the powder container and inlet directly to the-outlet, and to mix a quantityof water enteringthrough the hose with powder within the chambered portion of the mixing means, i V; V

v FREDERIQK MAURER.

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