US2195800A - Combined powder container package and spray gun - Google Patents

Description

April 2, 1940.A w. l.. RuTKowsKl 2,195,800

COMBINED POWDER CONTAINER PACKAGE AND SPRAY GUN INVENTOR.

31524 B/Q/fw @Mw/@1 April 2, 1940- w. L. RUTKowsKl 2,195,800

COMBINED lIPOWDER CONTAINER PACKAGE AND SPRAY GUN Filed July 18, 1938 2 Sheets-Sheet 2 i INVENTOR.

brrr? Patented Apr. 2, 1940 COMBINED POWDER CONTAINER PACKAGE AND SPRAY vGrUN Walter L. Rutkowski, Normandy, Mo., assignor to R. C. Can Company, St. Louis, Mo., a corporation of Missouri Application July 18, 1938, Serial No. 219,872

8 Claims.

` This invention relates to a combined powder container package and spray gun.

An object of my present invention is to deliver a greater volume of air, from within a compressed 6 air distributing chamber, into a by-pass than is delivered into a powder storage and distributing chamber.

A still further object of the invention is the provision of a unitary powder package and spray 10. device, which will materially eliminate surface packing of the powder when of an oily content, and, cause it to be properly mixed with air so that an excessive amount of powder will not be discharged during spraying operations, thereby 1li greatly increasing the eiflciency of a device of this character.

A still further object of the invention resides in a structure wherein powder within a storage and distributing compartment, forming part of a unitary package, is transferred in the desired quantity to a by-pass communicating with a compressed air distributing chamber, for mixture with powder from the storage and distributing chamber to be discharged in the form of a spray through a discharge opening directly from one end of the by-pass during spraying operation.

A still further object of the invention resides in the provision of a compressed air distributing chamber, a powder storage and distributing A chamber, a by-pass having end communication with the air distributing chamber and an air and powder discharge opening and having side communication with the powder storage and distributing chamber.

With the above and other objects in view, the invention consists in the novel features of construction, arrangement and combination of parts hereinafter more fully described and finally pointed out in the claims hereto appended.

Referring to the accompanying drawings forming a part of this speciiication, wherein like characters of reference denote similar parts throughout the several views:

Fig. 1 is a View partly in side elevation and partly in sectional elevation illustrating a struc ture embodying the features of my invention, the same being shown partly extended in dotted lines.

Fig. 2 is a view partly in sectional elevation and partly in side elevation of the tubular body member forming a powder storageand distributing chambenand which includes an air distributing chamber, an air intake valve, and an air bypass conduit, which are component parts thereof.

I Fig. 3 is a detail partly in side elevation and `5B partly in sectional elevation of a tubular member which serves as a hand hold in the assembled device and includesa closure head having a discharge opening.

Fig. 4 is a bottom `plan View of the'tubular member shown in Fig. 3.

Fig. 5 is a view partly in side elevation and partly in sectional elevation showing a slidable tube member and valved air inlets in the bottom thereof.

Fig. 6 is a top plan view of the powder storage and distributing tube with the by-pass tube removed from within the same.

Fig. 7 is a top plan view, partly in sectional elevation of the powder containing tube, clearly showing the by-pass tube, part of the inner face of the annular channeled metal bottom closure for the tube and part of the air intake Valve.

In carryingout the invention, I employ a suit able container, or package designated-generally as A, which is designedto hold a powdered insecticide and the like to be sprayed and means for directly spraying the powder, thus obviating the necessity of having to transfer powder to an independent spray gun.

The parts hereinbefore described, when combined in a package assembly, constitute a spray gun -so that the contents of the container body I can be conveniently sprayed from a discharge opening by merely working, or moving the'cylinder away from, and toward the inner end of the container body member I.

The container or package designated, generally as A, consists of a tubular paper body I, normally open at both ends. One end of the body I is closed by means of a suitable sheet metal closure head 2, having a flange 3 engaging the inner wall of the body and crimped and embedded into Vthe outer wall of the tube I, as at 4, so as not'to project beyond the outer wall of the tube l.

The sheet metal closure head 2 is provided with a suitable central opening, serving as an air inlet 5. The opening 5 is normally closed by means of a suitable cup-shaped valve member I5, which projects downwardly through the opening 5. The valve member 6 is provided at its upper edge with an outstanding ange l, serving as a stop, or means to centralise the valve with relation to the air inlet opening 5, as will be lmore clearly apparent hereinafter.

The sheet metal closure head 2 is formador shaped to provide an annular air distributing channel 8 by pressingan annular portion of the head material downwardly betwen the flange 3 and the valve controlled air4 inlet openingA 5, as clearly shown in Figs. 1, 2 and 7.

An inner bottom closure head, or partition 9, preferably of paper material and provided with an upwardly projecting wall ange Ill, is positioned and suitably secured in position such, as by adhesive, within the tube, or body I. The closure head 9 is suitably spaced from the metal bottom closure head 2 to provide a suitable air distributing chamber il therebetween. The auxiliary, or inner paper bottom closure head 9 is provided a suitable distance from its edge, with a series of spaced small air outlet openings I2 communicating with the interior of the tubular body I, which serves as a powder storage and distributing chamber I3. It will be here observed that there is sulhcient flexible resilient movement of the auxiliary paper head 9 adapted to act against the valve flange 1 to urge and hold the valve member 6 closed until air under pressure lifts the valve S to allow the air to pass through the valve controlled air inlet opening 5 and into the air distributing chamber II.

A suitable tube S4, preferably of paper material, and constituting a conduit, is suitably secured, such as by a staple l5, to the inner wall of the container tube I, as clearly shown in Fig. 2. The lower end of the air tube I4 passes downwardly through an opening I6 in the auxiliary bottom paper closure head 9 and rests on the inner face of the metal bottom closure head 2 so as to span the annular air channel 8. This arrangement permits compressed air within the air distributing chamber lI to follow the annular air channel for free entrance into the end of the tube I4 seated on the metal closure head 2. The upper end of the tube Iii projects upwardly a slight distance beyond the upper edge of the container tube I, as shown in Fig. 2. The tube I4 serves to provide a by-pass I1 for compressed air and powder, thus serving a dual purpose, as hereinafter more fully described. The tube I4 is of such inside diameter as to have a capacity much greater than the quantity of air that can possibly be forced from the distributing chamber Il through the openings I2 in the closure head or partition 9 and into the powder storage and distributing chamber I3. The tube or conduit I4 is provided along its length with a plurality of suitably spaced powder inlet openings i8 for the purpose of allowing powder and air within the powder storage and distributing chamber I3 to be slowly transferred into the by-pass I1 for final mixture with air in the tube I4 for discharge therefrom in the form of a spray.

The storage and distributing chamber I3 is adapted to be filled through the open end of the tube I with powdered insecticide, or other spray products in powdered form, and, thereafter, closed at its normally open end, as will now be described.

The means for closing the upper open end of the tubular` body member I, through which the same is lled with contents, consists of a relatively short paper slip tube l9, which is provided at its upper end with a paper cap including a top closure head 20 and a downwardly project,- ing wall flange 2l. The cap is slipped over the top end of the tube I9 and suitably secured in position such, for instance, as by adhesive, between the flange 2i an the outer wall of the tube I9. The head 2t is provided with a suitable discharge or spray opening 22, normally closed by a suitable sticker 23, which can be readily punctured adjacent the opening 22. The cap is positioned on the tube member I9 so as to register with the by-pass I1. The inner face of the closure head 2U of the cap, when positioned on the tube member IS, tightly engages the outer end of the by-pass tube I4 due to the fact that the tube i4 projects slightly beyond the outer edge of, the tubular body member I, thus preventing air and powder leakage therebetween. The tube member I G serves as a hand grip when the package is operated as a spray gun, as it is secured against movement on the tube I.

To complete the package structure, I employ l a suitable slidable paper tube member 24 having telescopic connection with the powder containing tube I, and the diameter of which is the same as the tube member I9. When in its closed position, the' inner edge of the slide tube 24 is adjacent the inner edge o the tube I 9. The inner end of the slide tube 24 is open, as is manifest, and the outer end thereof is closed by means of a paper closure head 25 having a wall iiange 26 adhesively secured to the outer wall of the slide tube 24. The closure head 25 is provided with a pair of spaced relatively large air inlet openings 2l' and they are normally closed by means of a paper strip 28, suitably secured midway its ends to the inner wall of the bottom closure head by means such as a staple 29. The paper valve strip 28 is stiff enough so that the free ends 30 thereof serve as valve members to normally close the air inlet openings 21, but flexible and resilient enough to function under air pressure. For instance, when the tube 24 is pulled away from the inner end of the container tube I, air rushes through the openings 21 past the valve members 3l) and into the air compression chamber 3! formed between the closure heads 2 and 25. When the closure head 25 on tube 24 is moved toward the closure head 2 on the tube I, air in the chamber 3l is compressed, closing the air inlet openings 21 by means of the valve members 3B, and, the air is then forced under pressure into the air distributing chamber II through valve controlled air inlet 5. From here, some of the compressed air passes through the air outlet openings I2 in the powder storage and distributing chamber I3, and at the same time a larger amount of air is forced by way of the channel 8 into and through the by-pass I1, which serves also as a mixing chamber, as well as an air 'by-pass, as the powder and air in the storage and distributing chamber I3 finds its way through the tube openings I8 into the air by-pass I1 to be discharged as an air and powder mixture in the form of a spray through the single discharge 22 in the top container closure head 20. The air introduced under pressure into the powder storage and distributing chamber I3 through the small openings I2 in the partition, or head 9, is just suiicient to cause the proper quantity of powder in chamber I3 to be carried through the by-pass tube openings I8 into the by-pass I1 to keep a steady stream of powder in the form of a spray being discharged through opening 22 from the by-pass I1. The by-pass I1 provides more air, under pressure, from the air distributing chamber, for final mixing purpose, than is introduced into the powder storage and distributing chamber I3 from the air distributing chamber though openings I2 so as to prevent powder from packing in the by-pass mixing chamber and to set up a steady powder spray when the pac1 age is operated as a spray-gun. When the tube I is completely full of powder the by-pass I1 will supply the required amount of air for mixture with the powder entering the by-pass through the by-pass tube openings to cause the powder tol be efficiently" sprayedl therefrom' through .the discharge opening` 22 in; the paperzhead .20after. the sticker seal from` the `opening has been-punctured. When ,thef tube is ,notgfull of; powder, thek air entering the powder storage and distributing chamberv i3 serves tdcarryp'owder into the bypass i l through the tube openings I8.

The tubes i9 and 24 are sealed together to preventy their separation by means of a label 32, which vlabel must be severed at the joint 33 formed between the inner ends of the tubes I9 and 24, as will be apparent from Fig. 1.

The many advantages of the herein described invention will readily suggest themselves to those skilled in the art to which it appertains.

From the foregoing description, it is evident that a simple device for this purpose has been disclosed, but it is to bevunderstood that I do not desire to restrict, or limit myself to the very detailsof construction shown and described, which is merely illustrative, it being obvious that changes, not involving the exercise of invention, may be made without kconflicting or departing from the spirit of the invention within the scope or the appended claims.

What I claim is:

l. A combined powder container and spray gun having, in combination, an air distributing chamber, a powder storage and distributing chamber, the air distributing chamber having communication through a series of small openings with the powder storage and distributing chamber, an air conduit having a discharge orifice at one end thereof passing through the powder storage and distributing chamber and projecting at one end into the air distributing chamber, and the powder storage and distributing chamber communicating through openings with the air conduit.

2. A combined powder container and spray gun having, in combination, a powder and an air mixing passage having a discharge orice at one end thereof, an air distributing chamber, a powder storage and distributing chamber, a series of air outlets leading from the air distributing chamber to the powder storage and distributing chamber, a series of air and powder outlets leading from the powder storage and distributing chamber to the air and powder mixing passage, the powder and air mixing passage being formed by means of an air conduit of greater capacity than the series of air outlets leading from the air distributing chamber to the powder chamber, and said air conduit projecting at one end into the air distributing chamber.

3. A combined powder container and spray gun having, in combination, a tubular body, a metal closure for one end of the body, an annular channel formed on the metal closure, a central valve controlled air inlet for the metal closure, a closure having an air and powder discharge opening for the other end of the body, a partition so placed within the body as to provide an air distributing chamber betweenlthe metal closure and the partition, said partition having a series of small openings therethrough, said partition having a relatively large opening therethrough, an air conduit passing through the large opening and projecting into the air distributing chamber, the inner end of the conduit being supported on the metal closure and spanning the annular channel formedthereon so as to lpermit the free passage of air fromy the air'distributing chamber into and through the air conduit, the other end of the conduit contacting the. closurehead adjacent the'l discharge-opening therein, mandsaid'ftube having a series of wall openings serving as powder and air outlet openings for the powder storage and distributing chamber. j l

4., In combination, ina combined powder containerand spraying device, 'af-vertical mixing passage having a discharge opening, a powder storage and distributing chamber, a lower chamber, the storage and distributing chamber having communication with the vertical mixing pas-- sage by means of a series of openings, the lower chamberhaving communication with the storage and distributing chamber byl means of a series y of small openings, said vertical mixing passage being formed by an air tube of greater capacity than the combined openings between the lower chamber and the powder storage and distributing chamber and projecting at oneend into the i lower chamber, said lower chamber having an anend closure for the body having a discharge opening, an air distributing chambena longitudinal air and powder mixing passage, a metal closure having a valve controlled air inlet forming one end 0f the air distributingchamber, an apertured partition forming the other end of said chambensald metal closure having an annular channel formed thereon, an air tube passing through an opening in the partition `and `projecting at one end into the air distributing chamber, and resting on the metal closure'to span the annular channel, and means for securing the opposite end of the air tube to'the tubular body adjacent the end closure for the body having the discharge opening. Y'

6. A device of the class described having, in combination, a chamber for the storage and distribution of powder, an air compression chamber, valve controlled air. inlets to the compression controlled opening betwen the compression chamber and the air distributing chamber, there being air outlet openings between the air distributing chamber and the powder storage and distributing 45 chamber, an air distributing chamber, a valve chamber, there being a longitudinal ley-passage extending from the top of the powder storage and distributing chamber to and into the air distributing chamber and disposed adjacent the inner wall of thepowder storage andA distributing chamber, therel being an air channel formed in the air distributing chamber communicating with yone end of the by-passage, therey being powder and air openings between the powder means for compressing air and forcing it into the air distributing chamber and from there into both the tubular body and the airl conduit and from the tubular body with powder into the air conduit to be finally mixed with air passing therethrough and discharged therefrom in the form of a spray.

8. A combined powder container and spray gun having, in combination, an air distributing chamber, a powder storage and distributing chamber, an air conduit having a discharge orice at one end thereof passing through the powder storage and distributing chamber and projecting at one end into the air distributing chamber, and the powder storage and distributing chamber communicatng through openings with the air conduit.

WALTER L. RUTKOWSKI.

Images