US2420738A - Paper powder can - Google Patents

Description

M8120, 1947. H'. K. DICKERMAN v i 2,4207 38 PAPER POWDER CAN A Filed Feb. 10. 1944 a v9a. /Jl Il 7d /61 /a I Inventor HKD/CKRNA f3 @www Patented May 20, 1947 PAPER. POWDER CAN Harry x. mckerman, Bungie, N. Y., assigner to F. N. Burt Company, Inc., Buialo, N. Y., a corporation of Delaware Application February 10, 1944, Serial No. 521,835 i 1 Claim. (Cl. 229-55) This invention relates to improvements in containers for powder or other comminuted materials, and morel particularly to containers of this nature made of cardboard, paper, or similar iibrous materials, and having an improved cap or closure member that can be made ci metal, iily of the well known plastic materials, and the e. It is a general object of the invention to provide a container of the class mentioned having an improved closure device for the container re ceiving opening that can be inserted in closing and sealing condition in the container merely by pressing or forcingI it into its iinal position to form a tight substantially permanent closure, no crimping or bending of the closure over the ad.. jacent edges of the container being necessary, and

i no machine or tool operations being required.

Another object of the invention is to provide an improved container for powder or similar materials, the main body of which can be eiciently constructed of non-metallic materials, thus conserving metals needed ln the war eiort.

Another object of the invention is to provide an improved closure member for containers of the class mentioned, having an improved construction to form a peripheral sealing bead, and that can be economically manufactured in large quantity production by factory methods merely by pressing or rolling the closure member to provide the sealing bead.

Still another object of the invention is to provide an improved closure member for containers of the class mentioned wherein the forming oi the sealing bead provides a circumferential groove adapted for mountinga rotary closure disc for controlling the dispensing of the container contents.

According to another feature of improvement, the closure member is constructed to provide an exterior peripheral sealing bead, and also an adjacent interior peripheral bead or shoulder adapted to retain a rotary dispensing closure in operative position and having inclined guide Walls over which the dispensing closure can abe pressed or snapped into its nal operative position and retained therein.

Other objects of the invention will be in part pointed out in the following detailed description of certain illustrative but preferred embodiments of the invention, and will be in part brought out in the following detailed disclosure.

The invention accordingly comprises an article of manufacture possessing the features, properties, and the relation of elements which will be exempliiied in the article hereinafter described and the scope of the application `oi. which will be indicated in the claim. y

For a more comprehensive disclosure of the na.. ture, objects and advantages ofthe invention,

, reference is had to the following description oi the illustrative embodiments, and to the accom panying drawings in which:

Fig. 1 is a perspective view of a powder can or container having a fibrous body and having end closure members embodying the invention;

Fig. 2 is a fragmentary enlarged central ver- .tical section through the upper end of Fig. 1; l Fig. 3 is a fragmentary central Vertical section similar to Fig. 2, but showing a modified structure;

Fig. 4 is a fragmentary section similar to that of Fig. 2, in which the-dispensing structure is omitted; and

Fig. 5 is a fragmentary sectional view similar to that of Fig. 2, but showing a further modified structure.

Referring to the drawing for a detailed def scription of the invention, and first to the embodiment thereof shown in Figs. 1-, 2, and 4, a container of conventional form is shown having Walls 1 which may be constructed of any of the known nonametallic materials above referred to. While the container is shown as :being cylindrical, it may assume any other Well known form. The body of the container formed by the wall 'l as shown, has openings at its opposite ends, the lower end opening being closed by a cap or closure member 8, while the upper end opening is closed by a similar cap or closure member il. These two closure members are ordinarily similar in structure except that for some purposes the closure member 9 is provided with structure for dispensing the container contents. The di rection from the top to the bottom of the container as viewed in Fig. 1 may be regarded as the longitudinal dimension of the container and the end. closure members, the distance from right to left in this iigure may be regarded as the breadth or diameter.

As best shown in detail in Figs. 2 and 4, the closure member `il, ordinarily constructed of metal, plastic materials,V and the like, embodies a closure plate I0 and an angularly disposed peripheral wall I-I ordinarily formed integrally with the closure plate In and adapted to telescopically enm gage with the ends of the Walls 1 of the container. Substantially ai; its upper extremity the peripheral wall I I is formed with an integral outturned flange I2 and an outer downturned flange or bead 3 I3. The flange or bead I3 may be curved or rolled as shown and is positioned for engagement at the outer side of the adjacent edge of the wall 1, thus 'forming a reinforcing and nishing structure. The peripheral wall I I and the flanges I2 and I3 all extend entirely and continuously throughout the entire periphery of the closure member. l

Adjacent to its lower edge the peripheral wall II is deflected or offset outwardly to form a retaining aid sealing bead I4. This offsetting of the Wall I I as shown, is preferably continuous and extends for the entire periphery of the closure member, thus providing a substantially sift-proof joint between the closure member and the container wall 1. This offsetting or deflecting of the wall II can be very readily accomplished by means of automatic machinery by rolling or pressing operations. This offsetting of the peripheral wall not only forms the sealing and retaining bead I4, but at the same time provides the inner peripheral groove I5. This structure not only stiffens and reinforces the closure member, but the groove I5 serves to rotatably mount a dispensing controlling member or disc, as described below.

At the lower side of the sealing and retaining bead I4 an inwardly and downwardly inclined guiding surface I6 is formed to extend continuously with the bead. This inclined guiding surface is adapted to enga-ge with the adjacent surface of the wall 1 when the closure member is inserted into its assembled position on the container. As the closure member is initially entered in the container opening, this inclined or inwardly tapered guiding surface I6 will engage the upper end of the container Wall, and as the closure member is pressed or forced into final position the sealing bead I4 is forced tightly against th'e adjacent container wall, thus making a tight sealing joint and functioning to retain the closure in its completely assembled relation. As shown in Figs. 2 and 4, this sealing bead is preferably formed with an abrupt crest or apex substantially at the upper or longitudinally outer extremity of the inclined guiding surface I6. Thus, when the closure member is forced into final position, this apex will bite into the wall surface or will be imbedded to some extent therein, thus promoting the sealing and retaining functions.

It will be noted from the above disclosure that the outer flanges I2 and I3 of the closure member will engage with the edge of the container wall as the closure member is forced into its final position, thus preventing the wall 1 from being deected or flared outwardly during insertion-of the closure member. This arrangement not only provides means cooperating with the sealing bead I4 to form a tight sealing joint, but it also provides a reinforcement and nishing structure for the upper edge of the container wall. The diameters of the closure member and sealing bead I4 are such that the bead ts tightly against the adjacent container walls with a pressure t whereby the apex or crest ofthe bead will engage tightly against the wall and by virtue of pressure against the wall be imbedded therein to 'some extent, thus permanently retaining the parts in assembled relation. With this structure it willv be seen that it is unnecessary to provide any circumferential groove or seat or like alteration of the container wall I to receive the bead I4, the inner surface of the container -wall being left in its original continuous or uninterrupted state.

This is of particular advantage from the stand- Point of low production costs, since it avoids deforming the container walls as will be readily understood by those skilled in the art. It will be noted that the peripheral wall II which is above or outside of the sealing bead I4 is radially spaced inwardly slightly from the adjacent surface of the wall 1, thus enabling the upper edge of the container wall to be deflected inwardly slightly during engagement therewith of the downwardly extending curved ange I3. This inward spacing of wall II may vary in practice and is shown somewhat exaggerated in Fig. 2.

In some instances it is desirable to provide a dispensing structure for the upper closure member 9, while such dispensing structure is, of course, not required for the lower closure member 8. For thispurpose, the closure plate I0 is formed with a dispensing opening II and a plurality of such dispensing openings may be prol vided, if desired, to form a sifter structure. Also, a dispensing closure I8 shown in the form of a disc and provided with a dispensing opening I9 is mounted at the upper side of the plate I0 and providedwith an operating handle or knob 20. In the embodiment shown, this dispensing closure I8 is a substantially circular disc and is of a diameter only slightly larger than the diametrcal distance between the inner surfaces of the wall II immediately above the groove I5. Thus, when the disc is inserted into its nal position as shown in Fig. 2, it is retained therein by engagement of its peripheral edges with the overlying or overhanging parts of the wall II. The disc is thus rotatably mounted and retained in the groove I5 so that it-can be rotated into positi'ons to open and close the dispensing openlng During assembly the dispensing closure disc I8 can be quickly and easily inserted into its operative position by exerting pressure on the upper surface thereof, thus defiecting or warping it slightly so as to slightly contract its diameter, thus permitting it to slide over the inner surface of the wall II. When it reaches its nal position, it resumes its original shape due to its 1nherent resiliency and is thus retained in its operative position. The closure disc is ordinarily constructed of cardboard, berboard, plastics or similar material.

In the embodiment of the invention shown in Fig. 3 the general structure and arrangement are the same as those above set forth, and corresponding parts are designated by the same reference numerals with the addition of the index a. However, in this modified structure an inner bead 2I is formed on the peripheral wall IIa adjacent' to and substantially merging with the outer sealing and retaining bead I 4a. This inner bead 2I is also preferably formed as shown by offsetting or deflecting the wall IIa along a line adjacent to and substantially parallel to the offsetting of the wall to form the bead I4a. Also, an inner guiding surface 22 is formed adjacent to the bead 2I and inclines inwardly and downwardly substantially to the apex or crest of the bead. This inclined surface thus provides a guide adapted to engage with the peripheral edge of the dispensing closure disc I8a so as to guide the disc during insertion thereof into its nal operative position. The dispensing closure disc can be inserted into its final position substantially as described above for the disc I8, but this structure for some purposes is more effective and the assembling operation can be more quickly and erence numerals'with the addition of the indexy b. In this embodiment, however, the apices or crests of the outer sealing and retaining bead Mb and the inner retaining bead 2lb are less abrupt than disclosed in connection with the other embodiments. However, the sealing and retaining bead |45 has a crest suiilciently abrupt so as to engage or be imbedded slightly in the adjacent surface of the wall 1b, thus providing an eiiective sealing and retaining structure. Also in this embodiment adispensing closure disc |812 is similar to the discs I8 and `lila and is similarly mounted in rotary operative position, but is provided with an operating elongated rib or handle 23 formed by offsetting the body of the disc for some distance substantially on a diameter thereof.A

Also, in this Fig. 5 embodiment there is avsealing membrane 24 of paper or similar frangible material interposed between the plate |0b and the disc |85. As shown, this lfrangible membrane extends entirely over the dispensing opening IIb in the plate |0b so as to provide a temporary seal for preventing accidental escape or sifting of the container contents during delivery, shipment, etc. This sealing membrane is shown in the form of a disc and may be adhesively or otherwise secured in position to prevent displacement thereof. When it is desired to use the concan be easily broken by bringing the dispensingJ within the container wall, a peripheral sealing and retaining bead on the outside of said peripheral wall and having an abrupt `crest projecting therefrom so as to engage the inner surface of the container walls to retain the closure member in closing position, the inner surface of the containerwall engaged by said bead being continuous and uninterrupted, said peripheral wall being offset or deflected continuously for the entire periphery of the closure member to form said bead which is thus continuous to provide substantially a sift-proof seal, said offset part of said peripheral wall forming a peripheral groove opening-at the inner side of said peripheral wall, said bead and said peripheral groove being positioned substantially at the inner extremity of said closure member and the bead having its outer surface inclined inwardly longitudinally of the container to form an inwardly tapered peripheral guiding surface positioned substantially at the inner extremity of the closure memberand cooperating with the container walls to guide and position the closure member during assembly thereof in the container, said crest of said sealing and retaining beadbeing of slightly greater A outside -diameter than the inside vdiameter of the container walls whereby the closure -member when inserted in closing position nts tightly within said container walls with a pressure nt exerting outward pressure against said inner surface of the container wall whichis initially continuous and uninterrupted thus causing said abrupt crest of said sealing and retaining bead to bite into and to be imbedded in said uninterrupted surface of the container walls, thus to provide a. substantially tight anti-sift joint and to form a permanent attachment for holding the closure member openings Hb and |9b into alignment and then breaking the sealing member by means of a pointed implement.

I'he closure structure of the embodiment of Fig. 5 functions substantially the same as described above in connection with the other embodiments. Also, the assembly of the dispensing closure disc is effected in the same manner as described in connection with the embodiment of Fig. 3, and the closure member is assembled in its nal position on the container as described above in connection with the other embodiments.

Since certain changes may be made in the article herein described and different embodiments ofthe invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

The invention having thus been fully described, the following is claimed:

In a container, in combination, said container having walls and an opening to its interior, a closure member for the container opening having a peripheral wall for telescoping engagement in operative assembled position.

HARRY K. DICKEBMAN.

` REFERENCES orriin UNITED STATES PATENTS Number Name Date 2,306,255 Scott Dec. 22, 1942 2,269,785 -Rigerman Jan. 13, 1942 887,760 Blood May 19, 1908 1,203,872 Harbeck Nov. 7, 1916 1.902.324 Dreux Mar. 21, 1933 2,324,032 Schlebach July 13, 1943 1,515,124 Lagois Nov. 11, 1924 1,274,744 Mullin Aug. 6, 1918 902,594 Moxham Nov. 3, 1908 2,326,839 Cullen Aug. 17, 1943 1.280.827 Patton Oct. 8, 1918 FOREIGN PATENTS Number Country Date 199,910 Great Britain July 5, 1923 418,621 Great Britain Oct. 29, 1934 24,445 Great Britain Oct. 21, 1910

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