US 3162348 A
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Description (OCR text may contain errors)
1964 J. J. GALBIERZ ETAL 3,162,348
COLLISION-PROOF PAPER OR FIBER WALLED CONTAINER Filed May 27, 1963 F l G. 5.
, INVENTORS JEROME J.GALBIERZ PETER J. DITTO ATTORNEY United States Patent Ofitice 3,162,348 Patented Dec. 22, 1964 a corporation of Missouri Filed May 27, 1963, Ser. No. 283,161 3 Claims. (Cl. 229-56) This invention relates to containers with a tubular body and end closures secured to the body by a protruding rolled seam, and more specifically to containers with paper, or fiber, tubular bodies provided with metal end closures seamed thereto which will prevent material damage to the walls of the body due to a collision with the rolled seam of an adjacent container in a shipping carton.
The invention has general utility for containers of the can type and especially for the larger sizes. The invention finds particular utility in cans of the larger sizes used for packaging fluids, for example, containers of the quart size, or larger, used in packaging motor oil.
Taking the oil can example as illustrative of the problem, quart size cans with metal foil lined fiber walls and sheet metal ends are now in common usage for the purpose. Oil is a relatively heavy substance, and, because it is a fluid, it lends no support to the can structure. The packagers deliver the cans in shipping cartons which vary in size and shape but are similar in one respect, that is, a plurality of cans are placed side by side in a rectangular corrugated fiberboard box of the proper size to confine a certain number of rows with a given number of cans in each row. Fiber walled cans of the fluid described are strong enough to resist damage when subject to expected rough handling, when shipped in this manner. However, instances have occurred when the fiber walls have been damaged during shipping, and this damage was so apparent as to cause the consignee to be concerned. In these instances, the fiber wall was damaged immediately adjacent the rolled head on the can end.
There is a readily explainable reason for this, and the identical damage is easily duplicated by dropping -a shipping carton ten or twelve feet onto a concrete floor so that the carton will strike on one end, or one side. When the cans of oil are removed from the carton after such a test, it becomes very evident that the head on one can, slid off the bead on the next, and dented in the fiber wall. The dent itself is not particularly serious, but, in some instances, the collision of the bead with the fiber wall pulls the wall partly out of the head on the can end in which it is secured. Thus, it is reasoned that it the weight of the contents, together with the length of free fall is great enough, some of the can walls might be dented so severely as to produce a leak at the rolled seam between the can wall, or body, and the can end closure.
This invention has, as its primary object, to make the fiber walled containers collision-proof especially in this respect.
According to this invention, each end of a fiber bodied can is provided with a novel form of end closure which, when applied to the can, provides an outer circumferential bead of the same rolled form as is usual, but, in addition, provides an inner bead adjacent, or in contact with, the inner wall of the can body above the outer bead (between outer beads). The inner bead is formed by crimping the metal of the can end so that a reinforcement is provided internally of the can body which has a radial resistance to crushing comparable with the outer bead. This construction minimizes the damage due to collision of the outer bead of one can with the wall of the body of the next at the adjacent outer bead of the next.
Other objects and advantages of this invention will appear from the following detm'led description which is in such full, clear and concise terms as will enable any person skilled in the art to make and use the same when taken with the accompanying drawings forming a part thereof, and in which:
FIG. 1 is a schematic illustration in top plan of a plurality of cans in a packing case, or shipping carton;
FIG. 2 is a schematic illustration in side elevation of FIG. 1;
FIG. 3 is a schematic illustration in side elevation showing the shift in position of the cans under a typical impact situation when a packing case, or carton, is dropped;
FIG. 4 is a fragmentary view in section of action which takes place during a typical collision between cans;
FIG. 5 is a sectional view on an enlarged scale illustrating a collision-proof type of can end; and
FIG. 6 is a fragmentary view in section illustrating the action which takes place during a collision between cans provided with collision-proof can ends.
This invention will be described as applied to cans which have a multi-ply body formed by spirally winding a paper outer ply over spirally Wound plies of paper and metal foil to form a foil lined can body with a label. Metal can ends are applied to opposite open ends of this body by a process which seams the edges of the multi-ply body to the can ends by simultaneously rolling an edge of the body into a bead at the edge of a can end as this bead is formed. After one can end is applied in this manner, the can is filled and the opposite can end applied in the same way. The filled cans are then packed in a shipping case, usually of corrugated fiberboard, or the like, fordelivery.
FIGS. 1 and 2 show a shipping case, or carton, 10 packed with a dozen cans, indicated as 11-22, ready for shipping. The carton 10 does not use dividers between rows of cans becauseof extra cost. Consequently, cans 11-22, when packed, are in contact one with another at the beads in the can ends top and bottom of each can. As will be apparent, some cans will be in contact at two points spaced ninety degrees apart on the "beads of the can ends top and bottom, others at three points, and
still others at four points top and bottom.
Rough handling, during shipping of the cartons, is unavoidable and it often occurs that cartons fall from a stack several feet high. Should the case hit the floor on an end, a corner, or a side, instead of flat on its top or bottom, then the action which takes place is illustrated in FIG. 3. The bead on one can end rides over. the bead on the next at the point of contact, and the beads collide violently with the body of the next adjacent can at a location on the body beside a bead. In FIG. 3, cans 19, 20, 21 and 22 are shown during this action to illustrate what might be termed a typical collision between cans due to impact.
The damage which can result from collision is shown on an enlarged scale in FIG. 4, especially is this possible if the cans contain a heavy liquid such as a motor oil. At impact, the bead 30 on the metal can end 29 of can 26 rides up the bead 33 of the metal can end 28 on the can 19, and, if the force of the collision is great enough, the bead 30 dents the body 34 of the can 19 as at 35. Should the impact of the case be great enough, it is entirely possible for the collision between cans 19 and 20 to actually cause the edge 36 of body 34 to be partially pulled away from the bead 33. If this occurs, there is a good possibility of oil leakage from can 19 due to collision damage. One possible manner of preventing collision damage of this kind would be to increase the size of the beads 30 and 33 so that protection is afiiorded further along the can body from the end. Another obvious way would be to eliminate the beads 30 and 33 by causing them to project endwise to the cans instead of outcarts in a 'shipprn wardly of the can walls. I N 'ther of these solutions is aaraefive however, f6r several reasons. changes; such as this, require extensive cha'riges in machinery, and the present beads, such as 311 and 33 0111116 cans, are;loo ke d up aa v'vi th'fa'vor iinder most instances because they supv a s the cans are Handled individually, the can be rolled on these beads, rather than age, or the prin thecanb vide protectn. I V V 4, invention provides a "olu't'o'n without a change in assembling machines, or the eliminationof the outwardly protruding head on the can end which bead functions norm-ally to prefect the outside er the fhody}, One exam-- ple of this inv'entio'ri'i's illustrated in FlGS. 5 and 6, closure 50,is crimped circu-mferentially at 110 to roan a first bead, anew- 56a circii friferen'tially at 42 to form a second beau ojr 's'hoi'ilder to reinforce the firstl, Lip 41 is'rblld onto the ed e of a eanb I same way an d by the same machinery as the can ends wfi F Gr l-tv .7
some erthe advanta es seemingfr m thiscliange in 'Whenstafcked, the beads space can ends is illustrated 6, Heretw o were.
and 20' strewn, during v Each can is proy ided with l 3., v a can ed- 59; when seem d tethe c n il'q' and 20', eaded edge, such a eieee we a i 2 4 5b 8 -65 he i n, t tak s Plac he. e e t s illustrated in FIG. 6 by the action er the b'ea'd52 whiehrides tt ead 1 4 ii trik s, theg f ji wan '4. th an '19: The censtruction or can end 50 is such that in ternal beadflfl is positioned internally of the can wall 34' ,approiiinately n e rattan] i the zone r impact el eve the .4 refin m n b ad; 4 g e r e at he 'q i i ap'r, cushion between w W ll 12 a shock absorber e s is 'p' bdu' s a 91 s "bt ly ccl i fi h t f an extremely remote can',, but also in Itction and einforcement. Whenon the labels, would Kain v a 5 4 t e V 4 i Bead 42 provides added strength to the first bead 40 by'stiifening each edge of the cylindrical ring of metal formed in the end closure 50 between circumferential crimps 40 and 42. This'stiffening ring distributes the force of a collision at one point and avoids concentratubular body, and a circumferential rolled seam between i the edges oif said can ends and the edges of said can body forming a protective head at each end of the can body protruding outwardly of the can end around the sides of the body, the improvement for eliminating damage to one can body from the beads on an adjacent can located side by side/when can tilting during a collision between cans ina shipping carton is caused by an impact on the shipping carton, comprising, I
(a) a second circumferential bead with a radial resistance to crushing comparable with said rolled seam located on one of said'can ends spaced inwardly of one of said protective beads and extending toward and along the .inside'of the can body within the can from said protective bead toward the opposite can end to back up the can body in a circumferential zone Within a width less than a bead width of said protective bead when the beads on adjacent side by side cans slip out of protective contact with one another byt-ilting which displaces the cans relatively axially during a collision. 2. Thecombination as defined in claim 1 in which the can is a tubular fiber body, the can ends are of metal. 3. Thestructure defined in claim 1 andsaid second circumferential bead forming an annular offset shoulder around the inside-ofeach can end, the Width of said shoulder being sufiicient to provide the reinforcement required for forming and for subsequent operation.
mistakes Cited the file of this patent Switzerland Jan. 31, 1938