US2215937A

US2215937A - Combined powder container package and spray gun

Info

Publication number: US2215937A
Application number: US275960A
Authority: US
Inventors: Walter L Rutkowski
Original assignee: RC Can Co
Current assignee: RC Can Co
Priority date: 1939-05-26
Filing date: 1939-05-26
Publication date: 1940-09-24
Anticipated expiration: 1957-09-24

Description

P w. RUTKOWSKI 2,215,937

COMBINED POWDER CONTAINER PACKAGE AND SPRAY'GUN Filed May 26, 1939 2 s t s t 1 INVENTOR.

Wa/faf. fiaZ/Zazas/Zd Sept. 24, 1940. w RUTKQWSKI 2,215,937

COMBINED POWDER CONTAINER PACKAGE AND SPRAY GUN Filed May 26, 1939 g s t -sh t 2 35 37 I f 54 L A? 1N VENT OR.

i/aiia/i. ZZZ $149k:

W I WTTORNEY.

Patented Sept. 24, 1940" PATENT OFFICE,

COMBINED POWDER CONTAINER PACKAGE AND SPRAY GUN Walter L. Rutkowski, Normandy, Mo., assignor to R. Can Company, St. Louis, Mo., a corporation of Missouri Application May 26,1939, Serial No. 275,960 4 Claims. (01. 43-147 This invention relates to a combined powder container. package and spray gun, and, it is av continuation, in part, of -my present application Serial Number 219,872, filed July 18, 1938. An object of my invention is to deliver a greater volume of air, from within a compressed air distributing chamber, into one end of a by-pass than is delivered into the inner end of a powder storage and distributing chamber, and, from which powder storage and distributing chamber, an air and powder mixture is delivered into the by-pass, at spaced points along its length, to be discharged from the outer, or other end of the pass'together with air passing completely through ,1 the length of the by-pass.

A further object of the invention is the provision of a unitary powder container package and;

of a device of the'character for spraying powder'e'd insecticides.

A' further object of the invention is the provision of a container package for powderedin- 3 .secticides, which will be simple and comparativechase thereof can be immediately used .as a spray gun for applying the insecticide directly from the package into a room, as Well as remote and, inaccessible places within the room, by a simple pumping action of one of the elements of the container package.

A still further object of the invention is the provision of a container package of the char- .acter, which is assembled and labeled, with the 4 exception of crimping one end closure head to the container package, at its place of manufacture, so as to allow a full tube opening at one end of the device forfilling one tube of the 4 container package construction with a powdered insecticide, at a place remote from the can manufacturer, and, which end closure head is applied by the insecticide packer afterv the container,

package has been filled with powdered insecticide,

50 ,thus relieving the packer of labeling the package after the container has been filled, which is a very desirable feature.

With theabove and other objects in View, the

invention consists in the novel features of construction, arrangement and combination of parts 1 "1y inexpensive in construction, which afterpurhereinafter more fully described and finally pointed out in the claims hereto appended.

Referring to the accompanying drawings forming a part of this specification, wherein like characters of reference denote similar parts: 5

Fig. 1 is a top plan view of my combined powder container package and spray gun.

Fig. 2 is a side elevation of the combined powder container package and spray gun and show ing part of the label therefor as broken away. y

Fig. 3 is a View partly in side elevation and partly in section of a combined powder container package and spray gun embodying the features of my invention.

Fig. 4 is a bottom plan view of the combined powder container package and spray gun.

Fig. 5 is a side elevation of the combined powder container package and spray gun, with the label severed, and showing telescopic parts there-- of in extended relation.

will beobserved that the combined powder con- 30,

tainer package and spray gun includes the following essentials, namely, a container tube serving as a storage and distributing chamber for a powdered insecticide; a compressed air distributing chamber in the lower end of the container tube, which is provided with an air control valve on one side, and, having a'plurality of air outlets on the other side leading into the powder storage and distributing chamber; a by-pass tube in the storage and distributing chamber having end communications with the air distributing chamber and. an air and powder spray discharge opening in a metal end closure for the storage and distributingchamber, the by-pass tube having wall openings for air and powder transfer from the storage and distributing chamher into the by-pass tube, a valve equipped slide tube mounted on a major portion of the container tube and serving as a sleeve piston to provide an air compression chamber between the inner end of the container-tube and the outer 9 end of the slide tube, and a hand grip tube mounted von and secured to the remaining portion of the container tube.

The essentials above described, when combined in a package assembly, constitute a spray series of spaced small air outlet openings gun so that the powder contents of the container tube can be conveniently sprayed from a discharge opening by merely working, or moving the sleeve piston away from, and toward the inner valve equipped end of the container tube, and by such an assembly of parts obviate the necessity of having to transfer powder from a package to an independent spray gun.

The container package consists of a suitable, so-called, paper or card-board tube I of the usual well known construction, which is cut to the desired length, and normally open at both ends. I

A sheet metal closure head 2 is crimped at its peripheral edge to the lower edge of the container tube I, in the usual manner, so as to engage and protect the inner, end and outer faces of the tube I, thus providing an inwardly dished closure head. The closure head 2 is provided with a central opening 3 serving as an air inlet. The opening-3 is normally closed by means of a metal cap shaped valve member 4, which projectsdownwardly through the opening 3. The valve member 1 is provided at its upper edge with an outstanding flange 5, serving as a stop, or means for centralizing the valve with relation to the opening 3 so that there will be provided an air inlet space around the valve, between the valve and the edge of the opening 3 when the valve is raised by air pressure, as will be more clearly apparent hereinafter.

The sheet metal closure head 2 is formed or shaped to provide an annular air distributing channel I3 by pressing an annular portion of the head material beyond the opening 3 downwardly, as clearly shown in Fig. 3.

An inner bottom closure head, or partition I, preferably of card-board or paper material and provided with an upwardly projecting wall flange 8, is positioned and suitably secured in position such, as by adhesive, within the tube, or body I. The inner closure head I is suitably spaced from the outer metal bottom closure head 2 to' provide a suitable air distributing chamber 9 therebetween. The auxiliary, or inner paper bottom closure head l is preferably, but not necessarily, provided a suitable distance from its edge, with a II! communicating with the interior of the tubular body I, which serves as a powder storage and distributing chamber II. It will be here observed that there is sufficient flexible resilient movement of the auxiliary paper head I adapted to act against the valve flange 5 to urge and hold the valve member 4 closed until air under pressure lifts the valve 4 to allow the air to pass through the valve controlled air inlet opening 3 and into the air distributing chamber 9.

A suitable by-pass tube I2, preferably of cardboard or paper material, and constituting a conduit, can, if desired, be suitably secured in position near its upper end, such as by a staple It, to the inner wall of the container tube I; as clearly shown in Figs. 5 and 6. However, the staple It need not necessarily be employed, as noted in Fig. 2. The lower end of the air tube I2 passes downwardly through an opening It in the auxiliary bottom paper closure head I and rests on the inher face of the metal bottom closure head 2 so as to span the annular air channel 6. This arrangement permits air compressed within the air distributing chamber 5! to follow the annular air channel 5 for free entrance into the lower end of the tube I2 seated on the metal closure head 2. The upper end of the tube I2 projects upwardly a slight distance beyond the upper edge of the container tube I, as shown in Fig. 2.. The tube I2 serves to provide a by-pass I5 for an air and powder mixture, thus serving a dual purpose, as hereinafter more fully described. The tube I2 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 9 through the openings II] in the closure head or partition I and into the powder storage and distributing chamber II. The tube or conduit I2 is provided along its length with a plurality of suitably spaced powder and air inlet openings I6 for the purpose of allowing a mixture of powder and air within the powder storage and distributing chamber I I to be restrictively transferred into the by-pass I5 for final mixture with air in the tube I2 for discharge therefrom in the form of an efiicient spray.

A suitable length of slidable paper tubing I! has outer telescoping connection with a major portion of the length'of the container tube I. The inner or upper end of the slide tube I l is open, as is manifest, and the outer or lower end of the slide tube I? is closed by means of a sheet metal closure head I8, which is crimped at its peripheral edge to the lower end of the slide tube Ill, in the usual crimping manner, so as to protect the inner end and outer face portions of the lower end of the tube I, and thereby provide an inwardly sunken head portion. The

closure head I8 is provided with a pair of spaced relatively large air inlet openings I9 that are normally closed by means of a paper strip 28 suitably secured midway its ends to the inner face of the metal closure head I8 by means of a-pair of prongs 2I punched from the closure head material. The prongs 2! are forced through the paper strip 20 and clinched to hold the paper strip in position over the air inlet openingsv IS.

The paper strip 20 is stiff enough so that the free ends 22 thereof serve as valve members to normally close the air inlet openings I9, yet flexible and resilient enough to efficiently function as valves for opening and closing the air inlet openings I9.

For instance, when the slide tube I1 is operated as a sleeve piston, and moved outwardly along the container tube I, air rushes through the openings I9 in the closure head I8 and into the air compression chamber 23 formed between the metal closure heads 2 and I8. When the slide tube Ill is moved inwardly on the container tube I, air that has been admitted to the chamber 23 is compressed, closing the air inlet openings I9 by means of the valve members 22, and the air is then forced under pressure into the air distributing chamber 9 through the valve controlled.

opening 3 in the metal closure head 2 on the lower end of the container tube I. From the air distributing chamber 9, some of the air is forced through the air outlet openings II) in the paper closure head E into the powder storage chamber of the container tube I, and, at the same timea greater amount of air is forced by way of the annular closure head channel 5 into the lower end of and through the by-pass tube I2, which tube I2 serves also as an air and powder mixing chamber, as well as an air by-pass, as the powder and air in the storage and distributing chamber II finds its way through the tube openings I6 into the by-pass tube I2.

To complete the powder container and spray gun structure, a short open ended tube 25 is slipped onto and surrounds the upper end portion of the container tube I, and, it .is of such length as to complete the outer tube structure 75 of the container package and spray gun. The

inner edge of the tube 24 is adapted to meet the inner edge of the slide tube I1 and when so assembled, the tube 24 is adhesively secured to the container tube I so that it cannot be displaced. The tube 24 also serves as a handgrip for the package when used as a spray gun, as it is held in one hand while the slide tube is moved back and forth by the other hand.

After the parts thus far described have been assembled, alabel 25 is afiixed to the slide tube and hand grip tube, thus separation, until the label is severed along a line opposite the unconnected joint between the inner edges of the slide tube and the hand grip tube.

The package is now ready to be filled with powder from the open top end of the container tube I, which is possible due to the fact that the upper or outer end of the hand grip tube is also open. 1

After the container tube' I has been properly filled with powder, the final operation of completing the combined powder container and spray gun structure is carried out, which is the closing of the upper open end of the hand grip tube 24.

The upper end of the hand grip tube 25 is closed by means of a metal closure head 26, which is crimped, in the usual manner, by means of a crimping machine. The peripheral edge of the closure head 26 is crimped to the upper'edge of the hand grip tube in such a manner as to protect the inner, end andouter face portions of the upper end of the tube 24. The closure head 26 is provided near the edge thereof with a depressed portion to form an inwardly projecting circular boss 2'! having an outer diameter equal to the inner diameter of the apertured bypass tube I2, so that when the closure head 26 is applied to the hand grip tube, the boss will be seated within the upper end of the tube 24 and with the upper end face of the tube 24 in tight contact with the inner face of the metal closure head 26 to provide a leak-proof joint therebetween.

The depressed boss on the closure head 26 is provided with a suitable central discharge opening 28, which is in axial alignment with the tube I2 so that the air and powder mixture in the tube I2 will be discharged from the tube I2 through the single opening 28 in the form of an efilcient spray. The opening 28 in the boss 21 is sealed by means of a paper sticker 29 after the container tube I has been filled with powder.

When the closure head I8 on tube I1 is moved toward the closure head 2 on the tube I, air in the chamber therebetween is compressed, closing the air inlet openings I9 by means of the valve members 22, and, the air is then forced under pressure into the air distributing chamber 9. From here, some of the compressed air passes through the air outlet openings III in the powder storage and distributing chamber 9, and at the same time a larger amount of air is forced by way of the channel 6 into and through theby-pass tube I2, 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 of tube I finds its way through the by-pass tube openings into the air by-pass I2 to be discharged as an air and powder mixture in the form of a spray through the single discharge'28 in the closure,

head 26. The air introduced under pressure into the powder storage and distributing chamber of tube I through the small openings I0 in the partition, or head 'I, is just suficient to cause the holding them against,

proper'quantity of powder in the storage chamber to be carried'through the by-pass tube wall openings into the by-pass tube I2 to keep a.

steady'stream of powder in the form of a spray being discharged through opening 28 from the by-pass tube I2. The by-pass tube I2 provides more air, under pressure, from the air distributing chamber, for final mixing purpose, than is introduced into the powder storage and distributing chamber of tube I from the air distributing chamber-through openings I0 so as to prevent powder from packing in the by-pass tube I2 and to set up a steady powderspray-when the package, is operated as aspray gun. When the tubel is completely full'of powder, the by-pass tube I2 will supply the required amount of air for mixture with the powderentering the by-pass tube through the by-pass tube wall openings to'cause the powder to be efficiently sprayed therefrom through the discharge opening 23in the closure head 26 after the sticker seal over the opening has been punctured. When the container tube I is not full of powder, the air entering the powder storage and distributing chamber of the tube I, serves to' carry powder into the by-pa'ss tube I2 through the tube wall openings.

The hand grip tube and the slide tube or 'sleeve' piston are sealed together to prevent their separation by means of the label 25, which label must be severed at the joint 36 formed between the purpose has been 7 disclosed, but it is to be understood that I do not I desire to restrict, or limit myself to the very details of construction shown and described, which is merely illustrative, it being obvious that changes, not involving the exercise. of invention, may be made without conflicting or departing from the spirit of the invention within the scope of the appended claims.

What I claim is:

1. A combined powder container; and spray gun having, in combination, a powder storage and distributing chamber, an air distributing chamber having communication with the powder storage and distributing chamber through a series of small openings, an air conduit having a discharge orifice at one end thereof disposed in the powder storage and distributing chamber and projecting at its other end into the air distributing chamber, and the powder storage and distributing chamber communicating with the air conduit through aplurality of air and powder outlets to allow a mixture of air and powder to be forced into the air conduit for mixture with an amount of air direct from the air distributing the lower end of the tube, a valve for closing an air opening in the closure head, an annular channel formed upon the inner face of the closure head surrounding the opening in the closure head, an inner closure head spaced from the first mentioned closure head to provide an air 7 distributing chamber, said inner closure head having a series of small openings through which air passes into the powder storage chamber, a conduit within the powder storage chamber and having openings in the wall thereof for the passage of air and powder from the powder storage chamber into the conduit, one end of the conduit passing through an opening in the inner closure head into the air distributing chamber, a short tube surrounding and secured to the upper end portion of the paper tube against displacement thereon, a sheet metal closure head secured to the upper end of said short tube for closing the upper ends of both of said tubes, and an inwardly projecting boss having an air and powder discharge opening formed on said metal closure and receivable in the upper end of the conduit.

3. A combined powder package and spray gun having, in combination, a tube providing a pow.- der storage chamber and an air distributing chamber spaced from one end of the storage chamber, the air distributing chamber having air communication with the storage chamber, the air distributing chamber having an air inlet control, an air by-pass tube within the storage chamber and having wall openings connecting the storage chamber with the interior of the air by-pass tube and projecting at one end into the air distributing chamber, a hand grip tube tsecured to a portion of the tube providing the storage chamber, a tube provided at one end with a valve equipped head slidably mounted on the remaining portion of the tube providing the powder storage chamber, a label secured to the hand grip tube and the slidably mounted tube to hold them against separation until severed at the open joint between the inner ends of said tubes, a sheet metal closure head adapted to be crimped to the outer edge of the hand grip tube after the tube providing a storage chamber has beenfilled with an insecticide powder, an inwardly projecting boss formed from the sheet metal closure head receivable in the outer end of the air by-pass tube, and said boss having an opening through which air and powder finally mixed in the air by-pass tube is adapted to be discharged in the form of a spray.

4. A combined powder container and. spray gun having, in combination, a powder storage com.- partment, an air distributing chamber, a centrally located valve controlled opening in the bottom wall of the air distributing chamber, an air conduit projecting at its inner end into the air distributing chamber and having a recessed outer end provided with a discharge aperture adjacent the outer end of the storage compartment, the air conduit serving as a mixing chamber for powder entering said chamber through openings in the wall of the air conduit, and an inlet valve controlled air compression chamber below the air distributing chamber.

WALTER L. RUTKOWSKI.