US1842542A - Container - Google Patents

Description

Jian. MQ, 1932.,

H. o. BAILEY CONTAINER Filed Jan. 8, 1929 3 SheetslSheet l jam 26, EQ. H, O, BAILEY 11,842,542

CONTAINER Filed Jan. 8, 1929 3 Sheets-Sheet 2 jam., 26, 1932.. H. Q DAlLEY 1,842,542

CONTAINER Filed Jan. 8. 1929 I5 Sheets-Sheet 5 liti Patented I.lain 26, '1932 UNITED STATES HRUTAD 0. BAILEY, 0F NEEDHAM HEIGHTS, MASSACHUSETTS @CONTAINER .Application led. January 8, 1929. Serial No. 331,088.

My invention aims to provide a novel box or container, preferably of paper board or paper stock, and a method of making the saine, whereby to obtain greater strength and lower cost of manufacture than has .heretofore been possible.

ln the present specification are disclosed several illustrative embodiments of my invention and a preferred method of producing the same, although my invention is not limited thereto.

Referring to the drawings Fig. l, in perspective, shows a novel box, illustrating one embodiment of my invention, in which are combined side walls that are straight, as well as walls that are curved;

Fig. 2 is a vertical cross-section of the box shown in Fi l;

Figs. 3 an '4 are enlarged sectional details to be referred to;

Fig. 5 is a perspective view showing a modified form of box wherein the side walls are wholly curved and preferably cylindrical;

Fig. 6 is an enlarged vertical cross-section of the same;

Fig. 7 is a fragmentary perspective view of a further modified form of box embodying reinforcing ribs of varying strengthening capacity;

Fig. 8 is an enlar ed sectional detail taken at line 8-8 of Fig; and

Fig. 9 is an enlarged sectional detail taken at line 9 9 of Fig. 7.

Referring to the drawings, Figs. l and' 2, the box or container there shown is generally triangular in shape and, see particularly Fig.

3, comprises an outer vertical side wall 1 and a bottom 2, composed of paper or other suitable pulp pressed from flat sheet form into a general cup shape, shown in Fig. 2, by means of a plunger of the requisite shape entering a die suitably shaped and fitted thereto.

The space between the plunger and the die is such as will provide the desired thickness of side wall and bottom in the completed box.

lt will be observed from the much enlarged detail, Fig. 4, that the inner face of the side wall l presents a series of inwardly projecting ribs 3, extending in ring-like form around the interior of the box and generally parallel with the level of the bottom thereof. These ribs may be of desired cross-sectional shape but, preferably, as shown in the detailed Fig. 4, are shown as curved in cross section and preferably with a more pronounced curve or Wall at their upper edges than at the bottoms, so that they present generally a triangular or wedge shape cross section.

These ribs are formed by circumferentially grooving the forming plunger so that as the latter presses the paper stock blank into the die, the material of the blank is caused to be pressed .into the rin like curves on the plunger, which latter form thereby ring-like ribs upon the inner face of the box Wall, which serve to strengthen the wall against distortion and particularly against any crushing action that would deform the wall 4unless it were resisted.

' The presence of the ring-like grooves on consequence that the structure of the blank would be disturbed and even destroyed, and the walls thinned and deformed by the flow of stock under pressure. By obstructing and even preventing this flow by means of the obstructions referred to furnished by the walls of the grooves, the stock is maintained intact, destructive flow is prevented, and the resultant Wall is made more homogeneous, compact and strong, and the rib-like formation resulting from these obstruction walls furnish an added element of strength to the completed wall.

It will be observed that the bottom of this blank has its central area punched out to form a central opening 4. This is produced by a cutting punch or head upon the main punch which, at the last endof the inward movement of the punch, punches out this opening, leaving the punched blank in the bottom of the mai die. i

Ordinarily the blank from which this outer cup member is died, will be provided with a surface coating at one face, preferably white, of such nature as to furnish the desired inner face of the member itself.

Referring again to Fig. 1, within the outer walled member 1-2, is an inner cupped meinber, the side Walls of which are indicated at 5 and the bottom at 6, of less diameter than the outer one, and with its vertical wall 5 separated substantially from the vertical wall 1 of the outer member. This inner cupped member may be formed similarly to the described formation of the outer member', and is provided at its inner face with similarly formed ring-like ribs 7.

It will be observed from an inspection of cup 5 and cover 23, Fig. 3, and Figs. 7, 8 and 9 that the ribs upon the cupped or cup-shaped members described are wider and deeper as they approach the upper open edge of the cup than at the bottoms thereof near the bottom portions of the cups, and they may also be made deeper, as Well as wider and spaced more closely together along the straight portions or at other desired points, not shown, for added supporting strength. For example, in the form shown in Figs. 7-9, the ribs are wider and deeper at the straight portions 30 than at the curved portions 31 thereof, as the straight walls require more stifening than the curved walls which are arched to resist bending.

The inner cupped member has an opening 8, punched in its bottom to register with the opening referred to that is cut in the bottom of the outer member.

Between the vertical walls 1 and 5 of the outer and inner nested cup members is a third member 9, provided also with a vertical wall strengthened at its inner face by similarly formed ring-like strengthening ribs 10, open at its bottom and provided at its upper edge with a preferably depressed or cup-shaped inturned' rim 11 to forma gutter or ring-like receptacle surrounding the vertical inner Wall but within the vertical outer wall and below the tops of both.

With the three members thus described nested as shown in the section Figs. 2 to 4, a disk-like bottom 12, it may be of the same paper stock or material, is applied against the closed bottom of the outer cup member and preferably, though not necessarily, attached to the latter by suitable adhesive. This disklike bottom is provided with a circular opening 13, registering with the opening in the closed bottom of the first cup-shaped member, but larger in diameter so as to provide a rimlike ledge 14 against which the blank 15, died out or cut out from the fiat bottom, may be placed and secured to close the opening in both disk-like member and the bottom of the died-out member.

Thus is formed in skeleton a completed box having a closed bottom, outer and inner, preferably concentric, walls with the gutter-like depression between the two.

The box so formed in outline is now covered with paper or cloth, to suit the requirements of the trade. In the present instance, see Fig. 4, this covering is accomplished by first covering or trimming the projecting marginal edge 13 of the disk-like bottom at 12 with a binding piece 16. Then the vertical outer wall is covered at 17, the upper edge being infolded and down-turned to finish or .trim the projecting upper edge of the outer wall (Fig. 3).

The gutter-like depression of the between member l1 is covered, preferably at its upper end only, as shown at 18, this being best done before this member is dropped into position between the nested cup members.

The bottom is covered by a covering 19 applied to the outer face thereof and concealing the disk-like cover 15 that closed the opening in the bottom of the box, and is made to overlie the edge trim 16 at the margin of the bottom.

The inner cup-shaped member is the actual containing member of the box and, after the box has been filled with whatever it is to contain, the open top is closed by a disk 20 which may, if desired, be secured by adhesive to the ring-like edge of the vertical wall 5 of the inner member, and this in turn will be covered by the facing 21 of paper or cloth as indicated.

This may be done either before or after the insertion of the gutter member 1l, but preferably after, and the inner member would be closed and trimmed before nested, and then would be dropped into its intended position and adhesive employed as a rule, to hold it in position.

The box cover is shown as comprising a top part or cover proper 22, With a vertical rim portion 23 formed by die and plunger in inverted cup shape after the manner in which the cup-shaped members of the bottom portions of the box were made, and provided at the inner surface of the vertical side-wall portions with ring-like strengthening ribs 24 as described, except that in the cover these ribs are shown as rectangular and as having straight faces, the same being covered with paper or cloth 25 after the manner heretofore described, and here shown as overlapping at the top, the downturn margin of the top covering sheet 26, and at the bottom being inturned and upturned about the open bottom edge of the cover wall.

A box or container illustrating my invention is stronger than boxes heretofore made, either by hand or by punch and die, by reason of the presence of the strengthening ribs and because the How of material during the pressing operation is retarded, thus leaving the walls more homogeneous and intact than would otherwise be possible.

Such a box or container is also much cheaper to make than boxes made by the methods and after the manner obtaining prior to my invention.

Because there is less flow of stock during the pressing operation, there is less disturbance of the stock at the surface of the walls, consequently it becomes more practicable in boxes made in accordance with my invention to employ paper stock that will make it unnecessary to provide paper orother coverings, more particularly at the interior walls of the boxes.

ln Figs. 5 and 6 is shown a different shape of box, being cylindrical in shape, but manufactured after the general manner described with reference to the box shown in Figs. l and 4, the inner member of this box having an inturned rim 27 with a central opening closed by a transparent member 28.

The ribs are here shown as exaggerated for the sake of clearness and accentuated in outline as compared to what would ordinarily be employed in commercial practice.

My invention is not limited to the particular embodiments herein shown and described.

Claims:

l. A container comprising one or more encircling pressed walls, the inner faces of which are provided respectively with one or more inwardly projecting thickening ribs, said ribs varying in thickness at different points around the container walls.

2. A container comprising a cup-shaped pressed member of an outline exhibiting both straight and curved portions, the inner face of the encircling wall being provided with inwardly projecting thickeningribs, the ribs at the inner faces of the straight portions of the said wall varying in thicknesses at different points.

8. A container comprising a cup-shaped pressed member in outline exhibiting straight and rounded portions, the inner faces of the encircling walls thereof having inwardly projecting thickening ribs of greater depth or thickness at the straight portions than at the curved portions thereof.

et. A container comprising a cup-shaped pressed member the integral encircling Wall thereof being provided at its inner face with a plurality of inwardly projecting thickening ribs spaced further apart at one end of said member than near the opposite end thereof.

5. [l container comprising a cup-shaped pressed member, the integral encircling wall thereof being provided at its inner face with a plurality of inwardly projecting thickening ribs spaced further apart at the open end of said member than near the closed end thereof, and of greater thickness near the open end of said member than in the vicinity of the closed end thereof.

6. A container comprising a pressed integral encircling Wall, the inner face of which is provided with one or more inwardly projecting thickening ribs, the latter being wedge-shape in cross section and of a greater thickness near the top end of said wall.

7. A container comprising a plurality of nested members having generally geometric-.lly similar outlines, each of said members comprising straight and curved walls provided with internal strengthening ribs integral therewith and of greater strengthening capacity adjacent said straight walls than adjacent said curved walls, substantially as and for the purposes described.

8. A container member comprising a molded Wall partially straight and partially curved having internal strengthening ribs formed integral therewith and of greater strengthening capacity adjacent said stra-ight portions than adjacent said curved portions, substantially as described.

9. A container member comprising a molded wall having internal strengthening ribs formed integral therewith and of greater strengthening capacity adjacent the top and bottom of said wall than adjacent the center thereof, substantially as and for the purposes described.

10. A container member comprising a pressed-pulp wall having an interiorly projecting strengthening rib molded integral therewith, one side of which constitutes an inwardly projecting ledge and the other side of which extends obliquely from the inner face of the Wall toward the outer edge of said ledge.

ln testimony whereof, l have signed my name to this specification.

HAROLD O. DAILEY.

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