US2888184A - Paper-board drum or container - Google Patents

Description

y 1959 T; A. HENDRY 2 ,888,l84

PAPER-BOARD DRUM OR CONTAINER Filed May 51, 1957 Hum 1111m W Ill) \A A A 2?. "0 15 9 I G 4 g 4 fig.

INVENTOR. 77 9mm A. HENDRX MS MIFD/MS Q ROBINSON.

PAPER-BOARD DRUM OR CONTAINER Thomas A, Hendry, Mariemont, Ohio, assign'o'r to The 'Excello Paper Products Company, "Cincinnati, Ohio, a corporation of Ohio Application May 31, 1957, Serial No. 662,690

11 Claims. crew-5.5

' presented the problem of effecting a tight joint at the lapped side joint at the base of the notch between the ter minal tabs.

Heretofore, one of the'terminal tabs has been of fractional size to lap the opposite terminal tab offull' size for extending the lapped joint of the sides intoithe terminal tabs between adjacent notches or with terminal tabs of equal size lapped with the side edges of said lapped tabs in registration. Or the entire outer edge of each terminal tab is inclined inwardly from its outer free end to intersect the score line. In theseconstructions, however, the lapped terminal tabs are in registration to preserve the symmetry of the tabs and the intervening notches. These constructions result in a double layer of the terminal tabs extending to their free ends which make them more diflicult to bend over and, when so bent, do not lie in the same plane with the other tabs. Moreover, bending of the double thickness terminal tabs is also resisted by adhesive material which is employed for adhesively bonding said lapped ltabs. It is the aim of this invention to obtain an effective joint with minimum lap and with the symmetry of the tabs and notches preserved.

Accordingly, one of the main objects of this invention is a tubular drum having a free extension adjacent one of the terminal tabs for lapping with both terminal tabs.

Another object of the invention is a tubular drum having a free lapping portion between the tabs.

Another object of the invention is a tubular drum having between the bases of the terminal tabs a free lapping portion.

Further objects, and objects relating to details of construction and economies of operation, will readily appear from the detailed description to follow. In one instance, the objects of this invention have been accomplished by the devices and means set forth in the following specification. The invention is clearly defined and pointed out in the appended claims, and a construction constituting one preferred embodiment of the invention is illustrated in the accompanying drawings, forming a part of this specification, in which:

Fig. 1 is a plan view of paper-board blank which is adapted to be folded to form a tubular drum embodying the invention.

Fig. 2 is a perspective view of the drum prior to formation of the end closure.

Fig. 3 is an enlarged partial bottom view of the finished drum.

Fig. 4 is an enlarged interior view of that end portion United States Patent F Patented May 26, 1959 2 of the drum with the free lapping portion between terminal tabs.

Referring specifically to the drawings in which like numerals designate like parts, numeral 2 (Fig. 1) is a paper-board blank provided with a coating lining 3 on one side of any suitable material to render the board impervious to liquids. One edge of the blank which is to form one'end of the drum is provided with a series of tabs 4, of any configuration, set off by alternatingnotches 5. These notches are preferably V-shaped, giving the tabs 4 the conformation of a truncated triangle with inclined sides 6. The tabs4 are set off from the main body of the blank by score line 7 parallel to the tabbed edge but spaced from the base of the tabs so as to be also substantially spaced from the bottom of the notches-5 by the portion 8. This portion 8 is a part of the main portion of the blank between the score line 7 and the tabs 4 but is folded with the tabs along the score line to form a surrounding margin for the closed end. The channel portion of the score 7 is on the interior of the drum and the rib side on the exterior thereof to provide for seating the peripheral edge of an end closure disc hereinafter described.

The tabs 4 are of similar conformation with full terminal tabs 9 and 10 provided. The side edge 11 of terouter side edge 15 of tab 10 an obtuse angle and extending to the side edge 16 of the blank to intersect the score line 7. The side edge 16 of the blank terminates at the score line 7 and does not cross it. This inclined edge 14 may or may not be extended across the score line as desired but does extend into it.

The opposite side edges 12 and 16 of the blank are overlapped into a lapped joint, sealed by adhesive, and secured by other means, such as tape or metal staples if desired, to form a tubular structure shown in Fig.2. The side edges '12 and 16 are brought together'with the free ends of the terminal tabs 9 and 10' spaced apart to form a notch 20 about equal to the width of each of the other notches to be symmetrical therewith. This sets off the free ends of terminal tabs 9 and 10 in symmetrical design with the free ends of the other tabs, and with the extension 13 lapped with the base portion of terminal tab 9. The symmetrical design of the tab is maintained and the symmetrical design of the notches is only slightly impaired by the lapped portion between the terminal tabs. However, the lap could be such as to be formed entirely in the portion 8 by making the extension 13 smaller. The size of the terminal notch could thereby be made substantially identical in size with the other notches and with the extension 13 lapped only with the portion 8 below the terminal tab 9.

This extension 13 is beneath the base portion of the ,terminal tab 9, and the slit 13a permits the edge 21 thereof to lap with the edge 22 of the other terminal tab 10 when said tab is folded inwardly as shown in Fig. 3.

By having the extension 13 slit from the terminal tab 10 by slit 13a, rather than integral therewith, it is more easily bent inwardly and does not cause any pucker or bulge between the adjacent terminal tabs 9 and 10. The edges 21 and 22 resulting from slit 13a will overlap and effect a light lapped joint. A bottom disc 23 is inserted to close the tabbed end, it being beneath the inturned tabs.

This case is an improvement upon the paperboard drum shown in my Patent 2,820,584 which issued January 21, 1958 from application Serial No. 645,744 filed March 13, 1957, and incorporated herein in full as a part of the present disclosure.

From the foregoing description of the illustrated embodiment, it will be seen that effective sealing is provided with the lapping portion interposed between the terminal tabs and that said lapping is obtained at the bases of said terminal tabs to leave the symmetry of their free edges unimpaired. While this slit 13a is preferably disposed parallel to the edges 12 and 16 of the blank, it

.could, of course, be disposed in any direction.

.drum, a series of tabs formed on one end of the body .with intervening V-shaped notches, a score line formed along and slightly spaced from the bottom of the notches,

.and an extension slit from the base of one of the terminal tabs having an inclined outside edge intersecting the 'score line and also intersecting with the side of said terminal tab at a substantial distance from its free end, said terminal tab and its extension providing a combined base width exceeding the base width of the opposite terminal tab for lapping therewith.

- 2. The tubular drum of claim 1 having a closure disc conforming in cross-section to the configuration of said drum with its peripherial edge seated in the score line, said tabs being bent over the disc and secured thereto and having the edges of the slit overlapped.

3. A tubular drum comprising a paper-board body bent 1 into tubular form with its opposite side edges lapped and secured, forming a lapped joint lengthwise of said drum, a series of tabs formed on one end of the body with intervening V-shaped notches, a score line formed along the end of the body, and a triangular extension on the body interposed between the two adjacent terminal tabs and detached therefrom, said triangular extension having a free outer edge inclined from a midpoint at the side of one terminal tab to a point at the base of the adjacent terminal tab and lapping the opposite terminal tab.

2,ses,1sa w 4. A blank adapted to have its opposite side ends lapped and secured for being formed into a tubular drum, a plurality of tabs formed along one end of the blank with intervening notches, an extension at the base of one of the terminal tabs adapted to lap the base of the other terminal tab, said extension and its adjacent terminal tab having a combined width exceeding the width of the other terminal tab, and a slit formed in the extension to sever same from the terminal tab.

5. The blank of claim 4 in which the slit is substantially parallel with the lapping side ends of said blank.

6. The blank of claim 5 having a score line formed along the tab end, adjacent the base of said tabs.

7. The blank of claim 6 in which the inclined edge of the extension is substantially below the free end of the terminal tab from which it is slit.

8. A generally rectangular paper-board blank adapted to be bent into tubular form with its opposite side edges fastened together, lengthwise of said formed tube, a series 'of tabs set off on one end of the body by divisions therebetween, including terminal tabs on the opposite side edges, and a lapping extension for one terminal tab for providing a base width exceeding that of the other terminal tab, said extension having an inclined outer edge for forming the bottom of a division formed between the side edges of the lapped terminal tabs when the blank is bent into tubular form.

9. The paper-board blank of claim 8 in which thetabs are in the form of truncated triangles with intervening V- shaped notches.

1 0. The paper-board blank of claim 8 in which a slit is formed in the extension to sever same from the terminal tab having a common base therewith.

11. The paper-board blank of claim 9- in which a slit is formed in the extension to sever same from the terminal tab having a common base therewith.

References Cited in the file of this patent UNITED STATES PATENTS 880,952 Yarnall Mar. 3, 1908 2,755,983 Ringler July 24, 1956 7 2,820,584 Hendry Ian. 21, 1958

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