US2518523A - Powder sprayer - Google Patents

Description

3 m m. 2 d u m 1 m n N? QsM W w m w 1 C n W am h P a g J. w. CIMBURA 'EI'AL Pownmz' SPRAYER Filed April 2, 1945 Aug. 15, 1950 aceptacle removedirom thenase.

Patented Aug. 15, 1950 STAT-ES PATENT OFFICE lTos'eph i0. Ives,

St. Paul, Minm, 'assignors to 'Mueller Can and 'Ttible*G0.,SL PlHfl, Minn., acorporation 01 Min- AnplieationApr'il '2, 1945. SeriaLNOw586J30 Our invention "relates "to powder *sprayers and has for em object to proviiie a. powder sprayer 'capable of operation "in any 'desirefi position.

Another object n'f the "invention resides "in providing a powder sprayer tn "which the powder is contained in separaite'closed receptacles adapted to he botfity inserted into-the device "when desired for use.

Another object 'of *theinvention residesfln provtfii-ng wpowder sprayer inelud ingrpumplng means and in which 'lestkageof powder out et thesame through thepumping-means is entl-rely preven'ted.

A feature dithe-lnvefition res'ifies inpmv'iding "a nontaliner forthe pewfier rece' sita ele ems atss'o- -ciated with the pmmiing means and in further prov iiiing :an stir qoervtous tiisc between the pumping means and interior of the ooritst'iner.

mother-objector the invention resiefes in provitling :a valved air inlet hetween the pumping means and container and 1m fitspos'ingthe zfir'peb over rsuch mm.

Other objects of the imven'tion reside =m' the novel combination and arrangement ofmerts and tn the details of menstruation :heremafter thustmted azndy'or described.

in the Idmwmgs:

Fig. 1 is an end "View 01' 1;. powder rspmyer -ilklustratmg an embofiimentwof our f2 is .a. l'cmg ltudineil seeticmal *view taken on fli-ne 12-42 of 3 is a cross sectional view taken on line i-S-Jof Eig. 2.

Fig. 4 is :a; [cross sectional "Fig. :5 is a view nf view *un line the pewd'er renumeral and which itsldispesedflmthin'a calse or container ll. Associated with this container is a. pumping cylinder 12, by means ef which air is forced into the device to in and threw powder the Mir :for his-- ehar-ge tIn-eugh the discharge nutlet at the nontai-ner. These various gpentsmfil new be indetail.

bular rnatemial, ranch zaspupar'whioh has a. :elosure L4 at .1128 Jewel-lend and a =c1oswe l {at its unpe:

meme suction there- 8 Shims. (Cl. 222-493) 'end. The closure 1'4 'is preferei'bly .cons'tnndted :of metal and 'is 'formed with .a flange "5 whichiis "crimped vto the lower .end .01 the sleeve "f3 and which lies substantially within the confines of the outer surface of said'sleeve, so as to iprovifi'e a flush construction "for co'a ctionwith't'he pumping means, as will be "presently more "fuIIy fleseri-beil. This closure, "as shown in Fig. 4 has e. central opening "I"! in the 'same "serving as "an eiir inlet through which the air'pum'ped by "the pump 12 may enter 'into "the container I' l.

For "fleeing the other 'end of the case W, a metal "ring I9 is employed which; encirles the sleeve l3 endisproViled with a flamge 2D crimped =to=theouter endotsaideleeve a-nd'atlrbtilarmembe! 21 nverlying said sleeve. "The ring f! hasun opening '22 in the same surrounded by a lip 28. The lip 23 is pressed into the *bodynf the Sleeve #3 and lies sfibstavn tially flush with the interior surface -01 said s'leeve. The'eperfing 22 givesaccess to the "interior "of the case 'fl, -and "the 'receptac-"he F0 is insertelble into ease In through this opening. The closure is intheform e'f "a crap and is nonstrucited of metal having an 'eni Wall 34 and a, flange 25 lssn'ing 'outwariily therefrom. The flange 25 engages the 11p 23 of the wing [9 anti forms =2. 'fluid tight eonnedtien there- I h'e tubular member "21 is held attached to :the sleeve n ey means or the ring ll-9 anti =l n :eztdition, may be glued "to sa'i'd sleeve fi' desired.

The receptacle m consists -a tubular boiiy epontion 26 "which is closed :a't upper and tower :eniis by means of oans 2.! rand 1278. "These maps are identical in menstruation sand 'renly fthe eap 21 will described :In (Between. This icap censists 01' a. :disc-Iike pertinn 2!! with azflange 3313 extending outwardly therefrom. @Said flangeis urimped 'eabmlt the end nf :thefi'hody "portion 2G and tie qoreferaabl-y 'imbeddefl ithe materiahofisn'id bodyworzticm, r50 that the same IHES flush with the outer surface thereof. "The Gian-like iparition 28 has :a

-81 thereon projects routwarlly there- Mom and ties in the @lzme of the edge :of -the things to which serves :a purpose to toe presently more described. The body zpflfitien .26 -03! receptacle H1 is somewhatesmaller than the *sleeve $3 :and forms with saidnleeveemnnnniar passageway $2 through which powderemi air may :pass in leaving the sprayer. 'Ime lbody portionui has holes and 34 at the upper and ilowerends thereof communicate with the passageway 32 and by :means of whichpowder within thereeep- M may be discharged rintolsaid passageway.

The map :2 0f receptacle I is spaced rtrom the closure to i'pnavid'ma. chamber I34 therebetweem at the 152K143! the device, cmnmumhence readily be comprehended that any powder entering the passageway 32 is discharged through the discharge opening 36 when air is forced along passageway 32. I

The cap 28, at the lower end of the receptacle [3 falls short of the closure I4 for case II to provide a pressure chamber 38 therebetw'een. This pressure chamber also communicates with thepassageway 32. Within this chamber and over-s lying the closure i4 is a felt disc 39 which fits snugly against the inner surface of the sleeve l3 superimposing this disc is a flapper valve 4! which is best shown in Fig 4. This flapper valve hasuportions I42 which fit loosely against the inner surface of the sleeve l3 and is cut away adjoining these portions to provide openings I43 through which air may pass into the chamber 38. The felt'disc 39 is pervious to air but impervious to powder. It will readily be comprehended that the disc 39 may be constructed of any suitable material having the desired characteristics. When air is forced through opening I1, the same passes through the felt disc 39 at right angles to the surface thereof and escapes through the openings 53 in valve 4! and into the chamber 38.

,Thepump cylinder [2 consists of a tubular member: 42 constructed of paper which has a closure -33 secured to theouter end thereof. This closure is-preferably formed of metal and has a flange 44 crimped about the'outer end of said tubular member. The tubular member 42 and the closure 43 constitute acylinder which, acting in conjunction with the container H, which serves as a piston form a pump means having a pump'chamber: A in which air may be compressed when said cylinder is moved toward the closure M of container 5 t. The closure 43 has an air inlet 443v which is adapted to communicate with the chamber 45. Overlying the closure-43 is a'valve indicated in its entirety at 4'? in- Fig. 3. This valve consists of a disc 48 constructed ofpaper or some similar material which'is formed with a crescent shaped cut 49 dividing the disc into an annular portion 5| resting upon the closure 43 and a central portion 52. The said disc is further weakened along a line 53 so that the central portion forms a hinged flapper valve for controlling the flow of air through the'i'nlet 46. When the cylinder 12 is drawn outwardly, valve 41 opens to permit entry of air into the chamber 45. Upon reversal of movement; the flapper valve 52 closes the inlet' 46 and the'a'ir is forced" into the air chamber 33 through the air passageway H in closure l4 throughthe felt disc 39 and through the openings 43 formed in the valve member 4|.

The powder to be dispensed from the device is furnished to the consumer packaged in the receptacle Ill whichfis filled with powder at the factory. For this purpose, the tubular bod por tion 26' 'is covered 'withawrapper not shown in' the drawings which covers the discharge openings 33 and 34. The cap 21 is first omitted and after filling, the said cap applied to completely close said receptacle. A package is thus formed of powder which can be sold independently of the container and pump and which can be placed into the container by the user. In order to use the device, it is merely necessary to remove the closure l5, punchv through the outer wrapper of the receptacle III at the locality ofthe discharge openings 33 and 34 therein to clear the same,

and then insert the filled receptacle within the container and apply the closur l5 thereto. Due to the fact that the receptacle I0 is the same at both ends, it is immaterial which end is first inserted into the container ll.

When the sprayer is first constructed at the factory, a wrapperis preferabl placed about the pumping cylinder 42 and the tubular member l8 connecting these members together. When the 7 device is to be used, the wrapper is severed at the joint between the cylinder l2 and the said tubular portion to free the said cylinder and permit of operation of thesame. When the complete device is sold to the consumer,the receptacle It] is inserted into the container ll without perforation of the wrapper about the saidreceptacl'e and the closure l5 must first be removed and the receptacle H) withdrawn from the container H and the wrapper thereof perforated before the device can be used. Upon replacement of the receptacle I!) after perforation and also replacement of the closure l5, the device isthen ready for use. To-operate the device, it is merely necessary to pump the cylinder l2 back and forth. This successively draws-air into the'pressure-chamber 45,-compresses the air and forcesthe'air through the valve opening I1 through the felt disc 39' and into the chamber 38.-- -From'this chamber, the air passes through the annular passageway 32 and'into the chamber I34. As the air enters the passageway-32, it expands and causes suction in the powder outlets 34 and/@133 which draws powder intothe passageway 32 and mixes the same with the'air. The powder laden air is then directed through the passageway 31 and discharged from the outlet 36.; -In the drawings, the device has been illustrated'in upright position. It will. however, become apparent that the device may be tilted or inverted; In any position of the device, the powder openings 33 and 34 will always be in a position to discharge powder into the passageway 32; Thus, the device may be held at any angle or position and thus aus'e "flow of powder from the discharge-opening 36.

While we have described the powderas'entering the passageway 32-through'suction caused by the air passing through said passageway, 'it'will readily be, comprehended that a certain amount of powder siftsinto said passageway through the disturbance set up in the device by themanipulation of the pumping cylinder l2 and alsoby'the action of gravity; The receptacle H] fits freely within the container H and between'the closures M and I5 and is-moved during manipulation of the devices .This keeps the passageway '32 clear and also assists in discharging powder into the same.

By the use of the felt disc" 39,'powder is prevented from: siftin into the pumping chamber 45 and thus leaving the device from the wrong end of the same. I have'found that'due to the ex- 1 treme length of travel of the air'edgewise through ever, the pressure is in the opposite direction,"

sap-saws '"valve WI lifts and the *air passes rrely through "the disc 39.

The advantages of our invention are manifest.

By means or the -construction disclosed, the

powder may "be sold in separate receptacles these receptacles placed within the container 'for instant use. By merely perforating the holes in the wrapper of the receptadle and applying the -"-enclosure to -the container, the device is ready for use. "In this manner, refills may be furnished without wasting of additional containers and pump cylinders. By the use Of the felt disc, as disclosed, leakage of powder out of the device throughthepumpcylinder is entirely .eprevented.

end thereof'said container being open at 'its' other end, a receptacle insert-able into said "sleeve through the open end thereof, said receptacle 'being closed at 'its ends, a removable closure for the open end of said container, said receptacle fitting freely within said sleeve to form an annular passageway therebetween and end chambers at the ends of said receptacle and adjacent said closures and communicating with said annular passageway, said receptacle floating within said container and having laterally extending powder discharge openings communicating with said annular passageway, an outlet opening in said removable closure communicating with the corresponding end chamber and pumping means at the end of the container having the fixed closure and communicating with the other of said end chambers.

2. In a powder sprayer, a container comprising a sleeve and a fixed closure attached to one end thereof said container being open at its other end, a receptacle insertable into said sleeve through the open end thereof, a removable closure for the open end of said container, said receptacle comprising tubular wall structure and imperforate caps secured to the ends of said wall structure, said receptacle fitting freely within said sleeve to form an annular passageway therebetween and end chambers at the ends of said receptacle and adjacent said closures, said wall structure of the receptacle having laterally extending openings therein adjacent said caps and discharging into said annular passageway, an outlet opening in said removable closure communicating with the corresponding end chamber and pumping means at the end of said container having the fixed closure and communicating with the other of said end chambers.

3. In a powder sprayer, a container comprising a sleeve and a fixed closure attached to one end thereof said container being open at its other end, a receptacle insertable into said sleeve through the open end thereof, a removable clossure for the open end of said container, said receptacle comprising a tubular wall structure and imperforate caps secured to the ends of said wall structure, sadi caps being identical in construction, said receptacle fitting freely within said sleeve to form an annular passageway therebetween and end chambers at the ends of said receptacle and adjacent said closures, said wall structure of the receptacle :having laterally zentending opening-s therein adjacent said caps and discharging into said annular passageway, ioutl'et openin'g in sai'd removable closure communicating with zone or said "end chambers and pumping :means rat the .end IO'f :said :container waving the rfixed :closure and communicating 'with the other :of said end chambers.

*4. .iIn:a powder sprayer, a :container nylmdrical in form "and comprisingta sleeve :and a sclosune attached to one rend thereof, .a receptacle :closed atzits ends within said tcontamermfrsnnilar :condigunaticn tend-10f ilesser external diameter length than the iinternal "diameter :and. :length :of said .ccntainer, :said container having am opening at zits end oppositezsaid lclosure through which said meceptacle may be inserted EiIlt'O "or removed i trom the container, :a :removable closure do! :said opening, said neceptacle be'ing 311E066, from :the sleeve of the container :to dorm an :annular lpassageway itherebetween and prov'iding :chambers at opposite ends of the container communicat- :ing with said :passagew-ay,zaidischarge ioutlet leading from one #of said chambers, pumping means associated with the :other :of :said chambers, :said receptacle floating within said container and :having :laterally 1 extending qpenings discharging into said annulanpassageway.

5. In a powder sprayer, a container cylindrical in form and comprising a sleeve and a closure attached to one end thereof, a receptacle closed at its ends within said container of similar configuration and of lesser external diameter and length than the internal diameter and length of said container, said container having an opening at its end opposite said closure through which said receptacle may be inserted into or removed from the container, a removable closure for said opening, said receptacle being spaced from the sleeve of the container to form an annular passageway therebetween and providing chambers at opposite ends of the container communicating with said passageway, a discharge outlet leading from one of said chambers, pumping means associated with the other of said chambers, said receptacle floating within said container and having a plurality of circumferentially arranged laterally extending openings discharging into said annular passageway, said openings being arranged so that at least one of said openings communicates with said passageway when the receptacle is resting upon the sleeve of the container.

6. In a powder sprayer, a container cylindrical in form and comprising a sleeve and a closure attached to one end thereof, a receptacle closed at its end within said container of similar configuration and of lesser external diameter and length than the internal diameter and length of said container, said container having an opening at its end opposite said closure through which said receptacle may be inserted into or removed from the container, a removable closure for said opening, said receptacle being spaced from the sleeve of the container to form an annular passageway therebetween and providing chambers at opposite ends of the container communicating with said passageway, a discharge outlet formed in one of said closures and communicating with one of said chambers, means for holding the closure in which said outlet is formed spaced from the corresponding end of said receptacle to permit of entry to and discharge from the chamber formed therebetween, pumping means associated with the other of said chambers, said receptacle floating within said container and having laterallyextending openings discharging into said annular passageway.

7. In a powder sprayer a receptacle comprising a tubular body portion, a cap for closing one end of; said body'portion and having a flange extend ing along and secured to said bodyportiom'a container including a sleeve surrounding'said body portion and spaced therefrom tozform a passageway extending about said receptacle, said container being open at the end of the same at which said cap is disposed for the endwise reception of said receptacle, said body portion'having openings therein discharging into said passageway, a closure for the open end of said container having a discharge opening therein and projections extending inwardly therefrom, a boss on said. cap adapted'to engage said projections to providepassageway between said cap and closure leading up to said discharge opening and pumping means for forcing air through all of said passageways.

'8. In a powder sprayer a receptacle comprising a tubular body portion and end members attached 'thereto, a container including a sleeve surrounding said body portion and forming therewith an annular passageway, said container being open at one end for the endwise reception of said receptacle, the-tubular body'portion of said receptacle having outlet openings communicating with said passageway, a closure attached to said sleeve and closing the open end of said container, said clo'- sure having an outlet opening therein, lugs on said closure engaging one end of the receptacle and forming a laterally extending passageway between said annular passageway and said. outlet openingin said closure and means for forcing air through said passageways. r

1 I 'JOSEEPI-I 'W. CIMBURA."

EBEN C. IVES. I

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

UNITED STATES PATENTS V Date

Images