US1995698A - Container and method of forming same - Google Patents

Description

March 26, 1935. A. B. WlLSON 1,995,698

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CONTAINER AND METHOD OF FORMING SAME Filed Feb. 5, 1932 2 Sheets-Sheet 2 I "III/11111111 Patented Mar. 26, I935 1,995,698 CONTAINER AND gIETlHOD F INDIRWHNG Allen B. Wilson, Evanston, EL, assignor to Acme lslifielel iglompany, Chicago, 1111., a corporation of Application February 5, 1932, Serial N0. 591,027 9 Claims. (Cl. 229-57) for providing metallic reenforcement about the upper and lower parts of the container. It is often desirable, from the standpoint of economy, to employ containers formed largely of paper board or fiber board for the storage or shipment of various commodities but such materials do not ordinarily, in themselves, embody sufiicient strength and stiffness to withstand the forces to which they are subjected without becoming distorted or broken and the methods which have heretofore been provided for reenforcing such containers by metallic members have necessitated the use of paper board or fiber board of considerable thickness and have unnecessarily increased the cost of the containers.

The principal object of the present invention is to provide an improved container formed of paper board, fiber board, or the like, which may be relatively thin, and which is reenforced by one or more annular metallic members which are securely held in place when driven to their final positions. Another object of the invention is to provide an improved method of forming a container according to which an annular metallic reenforcing band is driven into wedging engagement with an annular non-metallic wall until a part of the band or rim snaps into interlocking engagement with an end of the annular wall. Still another object of the invention is to provide a container comprising an annular wall formed of non-metallic material not subject to material changes in form, or dimension under the influence of moisture or changes intemperature, in combination with a metallic rim driven into wedging engagement with said wall and having parts adapted to snap into interlocking engagement with the end of said wall. A further object of the invention is to provide a container having an annular tapered wall comprising two annular metallic reenforcing rims located on opposite sides of said wall and driven into interlocking wedging engagement with the opposite ends thereof, one of said rims being adapted to hold in place an end wall of said container. Another object of the invention is to provide a container having an annular tapered non-metallic wall provided with an inner annular metallic rim surrounded by an annular depending portion of an end wall of said container which is wedged between said rim and said annular wall and held in place by interlocking engagement of said rim with the lower edge of said annular wall. Other objects of the invention relate to various features of construction and arrangement which will appear more fully here-- inafter.

The nature of the invention will be understood from the following specification, taken with the accompanying drawings in which one embodiment is illustrated.

In the drawings,

Figure 1 shows a perspective view of the improved container constructed according to the principles of the present invention;

Fig. 2 shows an enlarged vertical section through the parts of the container illustrated in Fig.1 when the upper and lower rims thereof are in the process of being driven to their final interlocking engagement with the annular container wall;

Fig. 3 shows an enlarged vertical section through one side of the container illustrated in Fig. 1, with an intermediate portion thereof broken away, showing the interlocking engagement of the annular. rim with the ends of the annular wall;

Fig. 4 shows a perspective view of the bottom or end wall before it is placed upon the lower metallic rim;

Fig. 5 shows a perspective view of the bottom or end wall after it has been placed upon the lower or inner metallic rim with the outer portion thereof depending about the outer surface of the rim;

Fig. 6 is a perspective view of a portion of the upper or outer metallic rim, showing the joint between the overlapping ends thereof; and

Fig. 7 is a perspective view of a portion of the lower or inner metallic rim showing the connection between the overlapping ends thereof.

As illustrated in the accompanying drawings, the invention is embodied in a container 10 comprising an outer annular wall 11 formed of a sheet of paper board, fiber board, or the like, and having its edges overlapped as shown at 11 and secured together by glue, cement, or the like, to form an upwardly tapered or flared wall. The paper board, or the like from which the wall 11 is formed, may be comparatively thin and is preferably treated by a sulphur process so that it is relatively hard and not subject to material expansion or contraction under the influence of moisture or changes in temperature.

The container 10 has a bottom wall 12 formed of paper board, fiber board, or the like, which initially has the form of a circular sheet, as shown in Fig. 4, provided with a marginal portion 12 which is adapted to be bent downwardly about the circular fold line illustrated as the dotted line 12'. Before applying this bottom wall or end wall to the container, the marginal portion 12* thereof is bent downwardly to receive an inner metallic rim 13 upon which the wall is seated as shown in Fig. 5. This rim 13 is formed from a band of sheet metal which is operated upon by suitable rolls or dies to form an outwardly projecting annular head 13* along one edge thereof and an inwardly projecting transversely corrugated flange 13 along the other edge thereof, as shown particularly in Fig.1. A portion of the bead is cut away from one end of the band and a portion of the flange is cut away from the other end of the band and then these end portions are overlapped and secured together by spot welds or rivets 14, thus forming a complete annular metallic band upon which the bottom wall 12 may be seated and about which the outer portion 12 of that bottom wall may be bent downwardly preliminary to placing the rim and the wall within the outer annular wall 11 of the container. Having formed and arranged the parts shown in Fig. 5, they are then forced downwardly within the annular wall 11, as shown in Fig. 2, and the rim is of such diameter that it passes into a tight engagement with the inner surface of the tapered wall 11 before the lower end of the wall 11 is reached so that, as the bottom wall 12 and the rim 13 move downwardly from the position shown in Fig. 2, the depending flange 12 of the bottom wall is wedged tightly between the rim and the lower portion ofthe wall 11 while at the same time the lower portion of the annular wall is momentarily expanded by the bead 13 to permit this bead to pass downwardly until it snaps out of the annular wall and into interlocking engagement with the lower end thereof, as shown particularly in Fig. 3. lhe rim 13 may preferably be so formed that it projects outwardly to a slight extent at the point where the body portion thereof is united with the inwardly extending corrugated flange 13 as shown at 13, so that this portion of the rim tends to project the surrounding portion of the bottom wall 12 outwardly and cause a corresponding outward deflection of the annular wall 11 as shown at 11 in Fig. 3, thus more firmly holding the annular bottom wall and inner rim in fixed relation to each other after the rim has reached its final lower positiori.

The container 10 is also provided with an upper or outer annular metallic rim 15 which is formed from a strip or band of sheet metal having the lower edge portion thereof transversely corrugated as shown at 15 to effect a slight taper and contraction thereof and having the upper edge thereof turned inwardly to form an annular inwardly projecting bead 15 Portions of. the bead 15" are cut away at the ends of the strip or band and the remaining body po t ons of the ends are overlapped and secured together by rivets or spot welds 16, as shown in Fig. 6. The transverse corrugation of the lower part of the rim 15 gives it a taper corresponding substantially to the taper or flare-of the annular wall 11 and the complete annular rim which is thus formed, is

passed upwardly over the wall 11 from the lower end thereof, as shown in Fig. 2, with the result that, before the rim reaches the upper end of the annular wall, it will have passed into tight engagement therewith so that, upon driving the rim upwardly to a further extent, the annular wall is momentarily contracted to a slight extent so that as the rim 15 reaches the final upper position shown particularly in Fig. 3, the bead 15 snaps over the end of the annular wall into interlocking engagement with the upper end thereof.

Although one form of the invention has been shown and described by way of illustration, it will be understood that it may be constructed in various other embodiments within the scope of the appended claims.

I claim:

1. A container comprising an annular tapered wall, and metallic rims at opposite ends of said wall having wedging engagements with said wall and having transversely extending parts engaging the ends of said wall.

2. A container comprising a tapered annular wall, and a metallic rim wedged within the smaller end of said wall and having an outwardly extending part engaging an end surface of said wall.

3. A container comprising a tapered annular wall, a metallic rim wedged within the smaller end of said wall, and an end wall seated on said rim and having an annular transversely extending flange wedged between said rim and said annular wall said rim having an annular part thereof projected outwardly adjacent the body portion of said end wall.

4. A container comprising an annular tapered non-metallic wall, an annular metallic rim wedged within the smaller end of said wall and having an annular outwardly extending bead snapped into interlocking engagement with the end of said wall, said rim having an inwardly extending transversely corrugated flange at its edge opposite said bead, and an end wall seated on said flange and having an annular transversely extending part wedged between said rim and said annular wall.

5. A container comprising an annular tapered non-metallic wall, a metallic rim wedged within the smaller end of said wall and having an annularbead snapped into engagement with said smallerend, and a second annular metallic rim wedged into engagement with the outer surface of the larger end of said wall and having an inwardly extending annular bead snapped into engagement with the larger end of said wall.

6. The method of forming a container which consists in uniting the edges of a sheet of nonmetallic material to form an annular wall, forming a complete annular metallic rim having an annular transversely projecting bead along one edge thereof, and then passing said rim into wedging engagement with said wall until said bead snaps over one end of said wall into interlocking engagement therewith.

'7. The method of forming a container which consists in uniting the edges of a sheet of nonmetallic material to form an annular tapered wall, forming a complete annular metallic rim having an outwardly extending annular bead along one edge thereof, forming a circular end wall, placing said end wall on said rim with the outer portion thereof bent over the outer surface of said rim, and then wedging said rim and said outer portion of said end wall within said annular wall until said bead snaps over th smaller end of said wall.

8. A container comprising a tapered annular wall, a metallic rim wedged within the smaller end of said wall and having an annular flange extending inwardly from the upper part thereof,

end and end well seated on said flange end heving an annular depending dame wedged between said rim end said annular well, said rim having en ennuldr nutwerdly projecting portion ddjdeent seid first named flange on said rim for forcing said flange of said end wall inte Wed ing engage ment with. said ennuier well.

d, d container eompnism dn snnnlsr tapered non-metallic WeII, end an ennnler fine-mine rim wedged inte engagement with the outer side of the larger end of said well and hevin en in== werdly extending annular bead snapped mm interlocking engeeexnent with the edjecent end of said Wall to hold seid rim in pesitien.

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