US2431081A

US2431081A - Powder spray dispenser

Info

Publication number: US2431081A
Application number: US600344A
Authority: US
Inventors: Walter L Rutkowski
Original assignee: RC Can Co
Current assignee: RC Can Co
Priority date: 1945-06-19
Filing date: 1945-06-19
Publication date: 1947-11-18
Anticipated expiration: 1964-11-18

Description

Nov. 18, 1947. w. L. RUTKOWSKI POWDER SPRAY DISPENSER 3 Sheets-Sheet 1 Filed June 19, 1945 INVENTOR. 9 m 74544752 L/E'ur/mms/r/ BY Nov. 18, 1947.

w. L. RUTKOWSKI v POWDER SPRAY DISPENSER 3 Sheets-Sheet 2 Filed June. 19, 1945 INVENTOR. 74 75/? L fiur/kon s/c/ 1947- w. L. RUTKOWSKI POWDER SPRAY DISPENSER Filed June 19, 1945 3 Sheets-Sheet 3 INVENTOR:

Patented av. 18, 1947 E'OER SPRAY DISPENSER Walter hltntkowski, Normandy, Mm. assignor to R. 0. Can Company, St. Louis, Mo, a corporation of Missouri Application June 19, 1845, Serial No. 800,344 2 Claims. (01. 222-193) more particularly the powder container with which the valved compression member is telescopically associated so as to render the device more reliable in use.

A further object of the invention is to provide a protective and moisture proof covering for the powder container, which facility also improves the slip fit connection between the powder container and the valved compression member telescopically associated therewith.

A further object of the invention resides in providingthe powder container with a powder filling opening adjacent a spray discharge opening at one end thereof, and providing the filling opening with a removable closure.

A further object of the invention resides in providing a partition dividing the powder container into a powder chamber and an air distributing chamber with burred air metering orifices for directing jets of air into the powder chamber from one end thereof adjacent the inner wall of the powder chamber.

A further object of the invention resides in providing a powder and air mixing tube contained within the powder container with powder metering openings. closely adjacent the inner walls of the end closures of the container.

A still further object of the invention resides in providing a flexibly resilient means ior closing a valve member controlling an air inlet opening to the air distributing chamber.

With the above and other objects in view. as will be hereinafter apparent, the invention consists in the novel features of construction, ar-

rangement and combination of parts hereinafter more fully described and finally pointed out in the claims hereto appended,

In the accompanying drawings, like characters of reference indicate like parts throughout the several views:

Fig. 1 is an enlarged view of a powder dispenser embodying the features of the invention. the same being shown with parts broken away and in vertical sectional and side elevation.

Fig. 2 is a side elevation of the powder dispenser with the valved compression member .of the powder container.

shown as slightly withdrawn relative to one end Fig. 3 is a side elevation of 'the powder container per se having the air distributing chamber and mixing tube.

Fig. 1 is a top plan view of both Fig. 2 and Fig. 3.

Fig. 5 is a bottom plan view of the cylindrical compression member per se.

Fig. 6 is a horizontal sectional view taken on line H of Fig. 1, showing the partition having burred air metering inlets as partly broken away, part of the channeled end closure. part 01 the valve member controlling an air inlet in the channeled end closure, and the spring controlling the valve member.

Fig. '7 is a bottom end view of the powder container having the air distributing. chamber.

Fig. 8 is a side elevation of the spring controlchamber.

Referring to the drawings, the reference character A designates, generally, a container, and B designates, generally. a cylindrical compression member telescopically associated with the container A. s

The container A is formed from wound paper material to provide a cylindrical body I. A covering of suitable moisture prooi material 2 is wound around the body I from end to end. A sleeve 3 of paper material is slipped over the body I from one end thereof. One end of the sleeve 3 lies flush with one end of the body I and is of a length terminating short of midway the length of the body I. That portion of the body I which is not covered by the sleeve 3 is covered by the cylindrical compression member B telescopically associated therewith when in its closed position relative thereto.

One end of the body i and one end of the sleeve I is provided with a permanently positioned metal closure 4 having a suitable small diameter discharge opening 5 adjacent the peripheral edge thereof, and is further provided with a relatively large diameter powder filling opening 6 which is controlled by means of a suitable removable metal closure 1, preferably, although not necessarily of the friction plug type.

The opposite end. of the container body I is provided with a permanently positioned metal closure 8 having a suitable central air inlet opening 9.

A partition formed of paper material and having a disc portion Ill and a skirt I l is permanently positioned within the body i adjacent the metal end closure 8 with the free edge of the skirt ii chamber D. The disc portion ||l of the partition is provided with a suitable opening i2 close to the inner wall of the skirt H and the disc portion I0 is iurther provided with a number of spaced air metering inlets l3 closely adjacent the inner wall end closure 8 which is deformed to provide a channel 22 so that air forced into the air distributing chamber will also be forced into the end of the tube '2 I within the air distributing chamber D, as well as into the powder chamber 0 through the air metering inlets IS in disc 10 of the partition. Air forced into the powder chamber is in the form of air Jets adjacent the inner wallof the powder of the skirt II with the inner ends of the inlets lo projecting into the powder chamber C in the form of paper burrs due to the fact that the inlets is are formed by merely puncturing the disc l0 from the outside inwardly, thus leaving the burrs It in the inner face of the disc Ill; The burrs l4 tend to prevent any appreciable amount of powder from leaking into the air distributing chamber D from the powder chamber C, as the air inlets have ragged inner edges and are very small in diameter being merely pin point inlets. The burred air inlets I! are very small in diameter, and the burrs I4 provide a ragged edge therefor which have a flap valve action. Thus, the result is due to both the size oi the openings i3 and the closing action oi the paper burrs, and due to the weight of the powdered contents in the container A when standing upright. A very small amount of powder will find its way intothe air distributing chamber D, but will not iind its way into the compression annularly channeled shape of the end closure 8 and the spring controlled valve IS.

The metal end closure 8 having the air inlet opening 9 is providedwith a surrounding raised chamber between the

closures

8 and 21 due to the valve seat I! spaced a suitable distance from the edge of the opening 8. A cup shaped check valve member I6 is loosely projected outwardly through the air inlet opening 9 and the free inner edge of the check valve member is provided with an outstanding rim or flange H which is normally seated on the valve seat II to close the air inlet opening 8. A suitable spring formed of flat material is provided midway its ends with a U-shaped bent section is which is seated in the cup shaped valve from the U-shaped section are slightly inclined arms I9 having cross-heads 20 at their outer ends adapted to seat against the disc portion ill of the paper partition adjacent the inner wall of the member and projecting in opposite directions container wall, thereby exerting the necessary so pressure to hold the valve member in its normally closed position for controlling the air inlet open chamber for agitating the powder therein.

The wall of the tube 2| is provided with a plurality of suitably spaced small diameter powder metering inlet openings 22 adjacent the disc it) of the partition and within the powder chamber for metering a small quantity of powder from the end of the powder chamber 0 into the end of the tube 2| immediately adjacent the air distributing chamber D and the disc ID of the ,partition.

The wall of the tube 2| at its opposite end portion adjacent the end closure 4 is also provided with a plurality of powder metering inlet openings 24 formetering a small quantity of powder from the powder chamber G into this end portion of the tube 2|. Thus, it will be apparent that powder enters the tube adjacent the ends of the tube only from the end portions of the powder chamber C, no powder entering the tube in its length therebetween.

The discharge end of the tube 2| is held against displacement adjacent the and closure 4 by means of fastening devices, such as staples 25 passing through the wall of the sleeve 3, the wall of the body and the wall of the tube.

The cylindrical compression member B is formed of wound paper material to provide a body 26 which is provided at its outer end with a permanently positioned metal closure2l having a pair of spaced air inlet openings 28. A suitable paper check valve 29 is secured to the inner face of the end closure 21 between the openings 28, as at 30, so that air can be taken into the compressiOn member when it is moved away from the sleeve 3 and to prevent air leakage outwardly through the openings 28 when the compression member is moved toward the sleeve 3 and the valve controlled air inlet in the end closure ii of the container having the powder chamber and air distributing chamber.

The-device is sold as packaged goods, that is the container A is filled with the desired powder, insecticide or the like, the discharge opening 5 is sealed with a suitable tape, not shown, and, a suitable paper label, not shown, is applied to the sleeve 3 and tube 26 covering the full length of air inlet 8 by means of the compression member B when reciprocated upon the body I. The air under pressure forces the valve member to raise with relation to the air inlet opening 9. The air passing through the opening 8 surrounds the cup shaped valve member l6 and the flange spreads the air as it enters the air distributing chamber D.

A suitable diameter tube 2| of proper material and which serves as a powder and air mixing tube is located within the powder chamber C closely adjacent the inner wall thereof, in fact, in contact as therewith for a distance from the end closure 4. The tube 2| registers at one end with the discharge opening 5 and has tight end contact with "the inner wall of the and closure surrounding the package when the compression member B is in its closed position to prevent the valved compression member B from being displaced outwardly during transportation, and handling of the package, before and after sale of the package to the purchaser thereof. To use the package as a dispenser, the purchaser merely cuts the label at a point corresponding to the adjacent ends of the sleeve 3 and tube 26, as indicated at 3|, in Fig. 1, which allows the valved compression member B to be reciprocated upon the powder container A by the operator thereof for spraying powder from the container A. Undesirable features of other powder spray devices are eliminated by the provisions of the effective package shown in the drawing and disclosed herein, such as powder clotting during spraying operations regardless of the position in which the package is held by the operator, preventing powder leakage into the valved compression member B both during transportation and handling before and durthe air distributing chamber D rests on the metal ing spraying operations.

From the foregoing description, it will be apparent that I have provided a package for the purpose indicated that can be thrown away when emptied as a powder dispenser, that shall be of simple and comparative inexpensive construction, neat in appearance, and admirably adapted for the purpose without any inconvenience to the user 3 thereof.

While the foregoing description of the preferred form of my invention is illustrated in the accompanylng drawing, it is to be understood that I do not desire to limit myself to the showing made in the said drawing and description thereof, as it is apparent that I may adapt variations of the preferred form within the scope of my invention as defined in the claimshereto appended.

What I claim is: I

1. The combination, in a powder spray dis penser, of a powder container having a cylindrical compression member telescopically associated therewith. the powder container having two inner end closures spaced apart to provide an air distributing chamber therebetween and a com!- larly arranged burred air inlets having ragged edges having flap valve action to admit air under compression from the air distributing chamber into the powder container and limit powder leak- .ly projecting flange on the valve member, an annular valve seat for the flange to rest upon. and a spring yieldingly seated on the valve member for normally holding the valve member in its pression chamber between the innermost inner end closure and the compression member, the powder container having an outer end closure provided with a dispensing outlet, a powder and'alr mixing tube having a plurality of powder metering openings adjacent the ends thereof, said tube arranged for end communication with both the air distributing chamber and the dispensing outlet, the innermost inner end closure having a central opening, a spring controlled cup shaped valve in the opening, a raised annular valve seat concentric with the opening, an outstanding flange at the upper edge of the valve normally seated on the raised valve seat adapted to radially spread air under compression from the compression chamber into the air' distributing chamber, the other of said inner end closures being of paperboard'material and having a plurality of circuseated closed position.

WALTER L. RUTKQWSKI.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,018,525 Johnson et al. Oct. 22, 1935 2,117,362 Rose May 17, 1938 2,195,800 Rutkowski Apr. 2, 1940 2,215,937 Rutkowski Sept. 24, 1940 2,242,146 Rutkowski May 13, 1941 2,315,581 Berenson' .Apr. 6, 1943 2,355,127 White Aug. 8, 1944 FOREIGN PATENTS Number Country Date 13,620/33 Australia July 31, 1934