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Патент USA US2409693

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0d. 22, 1946.
g, E, NYBERG
CONTAINER
Filed March 25, 1944
2,409,692
2,409,692
Patented Oct. 221, 1946
UNITED, STATES PATENT ‘OFFICE
2,409,692
CONTAINER
Curt E. Nyberg, Chicago, 111., assignor to James
F. Barnes, as trustee ‘
Application March 25, 1944, Serial No. 528,099
6 Claims. (01. 229-51)
1
2
This invention relates to a package or container,
and more particularly‘ to a package adapted
to contain servings of liquid foods such as cream,
beverages, or the like.
is, in the construction of the container, turned
downwardly at right angles with the top wall I0
An object of the invention is to provide ‘a con
tainer which may be conveniently opened for
emptying by deforming the top of the container.
Another object is to provide a container which
is regular in outline and which may be stacked in
compact arrangement, but which may be easily
opened for emptying.
Another object is to provide such a container
which may be stacked in compact arrangement
and when so stacked will be strong and highly
resistant to rupture, but which when pressed
across corners at the top of the container will,
‘easily rupture to permit emptying of the con
tainer.
.
Yet another object is to provide a container
having a weakened line across its top wall, which
line will rupture to open the container. More
speci?cally, it is desired to provide a package
having such a weakened line whichwhen rup
tured will form a dipped edge surface which will
enable easy pouring.
.
Still another object is to provide from a Single
sheet of paper material the top and sides of a
to form a side of the container.
.
Likewise, the
rectangular portion 20 adjacent the edge [3 is
turned downwardly at right angles with the top
wall Ill to form a second side, and side portions
2| and 22 are similarly turned to form the other
two sides of the container.
The portion of the sheet which is intermediate
of the sides l9 and 20 is folded along the lines
23, 24 and 25. The part which is between the
edge 26 of the side 20 and the corner line 23 is
folded inwardly, and also the part between the
edge 21 of the side, l9 and the corner line 23 is
folded inwardly. Thus when the sheet is folded,
the corner ‘line 23 lies just adjacent the edges 26
and 21 at the corner formed by the two adjacent
sides. One fold (including the material between
lines 23 and 26) will lie inside and adjacent the
side wall 20, and another fold (including the
material between the lines 23 and 21) will lie
inside and adjacent the side wall l9.
‘
As seen in Fig. 4, the sheet A is preferably’
octagonal in shape, with the corner edge 28 ex
25 tending at right angles to the corner line of fold
23 and between the ends of the lines of fold 24 and
25. The corner line of fold 23 bisects the angle
between the side edges 26 and 21, and the lines 24
and 25 bisect the angle between the corner line
Other objects and advantagesof the invention 30 23 and the respective side edges. With this con
struction, the bottom edges of the folds will,
will be apparent as the following detailed descrip
when the container is formed, lie straight and
tion proceeds.
flush with the bottom edges of the side portions.
An embodiment of the invention is illustrated
The sheet portions which are between sides
in the accompanying drawing, in which-:
Fig. 1 is a perspective view of the improved 35 19 and 22, between sides 22 and 2|, and between
sides 2| and 2!] are formed similarly to the por
container; Fig. 2 is a perspective view similar to
tions between sides [9 and 20 just described.
Fig. 1 but showing the container in open condition .
An important feature of the construction is
ready for pouring; Fig. 3 is an elevational section
container, the construction being simple andv
involving a minimum of operations.
al View through the center of the container and
the preparation of the sheet A to include a weak
showing the assembly of the bottom and side
ened line 30 (shown dotted in the drawing) which
walls; Fig. 4 is a plan View of a sheet of mate
extends from the corner l6 of the top wall to the
corner [8. This line may be formed by perforat
ing the sheet, or‘ preferably by cutting the wall
part way through its thickness, or in any other.
way providing a weakened line extending between
the corners of this top wall. Preferably, the
weakened line should not contain actual openings
rial ready for assembly to construct the top and
side walls of the container; and Fig. 5 is a plan
view of a sheet of material employed in the forma
tion of the bottom wall of the container.
As illustrated, the improved container may be
formed at its top and sides from a single sheet of
material A, which may be of paper or the like,
and the bottom may be formed of a single sheet B,
of like material.
As seen particularly in Fig. 4, the sheet A in
cludes‘ a centralrrectangular portion 10 which is
preferably square, having the edges ll, l2, l3 and
therealong which would permit leakage of liquid
held within the container, but should be suf?
50 ciently weakened to permit easy rupture to open
the container along this line when the container
is deformed, as will later be described. '
The weakened line 30 is preferably ‘straight
I4.- which form the corners I5, l6, l1 and’ t8. . The
across the corners of. the top wall It, except for.
sideportion; 19 of the'sheet ‘adjacent the edgef?
thecentral. portion it which‘ may beadipped to- I
2,409,692
3
ward the corner I‘! in the form of a curve or
4
other. The pressure tending to bring the corners
l6 and I8 closer together also tends to spread
the corners l5 and I‘! farther apart. The result
is that the top wall I0 is ruptured along the weak
semi-circle. This dipped portion of the weakened
line serves, when the line is ruptured, to provide
a pouring lip which causes liquids or the like being
poured from the container to issue in the form of 5 ened line 30 to form a slit which widens as the
a stream from the middle of the top instead of
spreading over the whole edge of the opening.
This operation will later be explained in more
detail.
operator presses against the corners I 6 and I8.
This opening is illustrated by Fig. 2 of the draw
ing.
,
The opening of the slit permits the contents
If desired, an adhesive may be placed within 10 of the package to be poured therefrom by merely
the folds of the intermediate portions so that
tilting the package. Where the weakened line is
when the structure is pressed into form, the adhe
dipped, as shown in the embodiment illustrated,
sive will secure the folds tightly and tend to pre
-V the liquid may be poured from the depressed lip
vent any opening of the folds to allow deforma
lla thereby provided so that the liquid contents
tion of the corners.
15 of the container will issue forth in a central
With the sheets formed as described to form
stream instead of pouring across the whole edge
the top and sides of the container, the structure
from corner to corner. Also, this lip presents an
may be inverted and ?lled from the bottom. If
e?icient edge for cutting oif the flow sharply
the folds have not been secured as by adhesive,
when the container is righted so as to prevent
it is desirable to con?ne the folded structure in 20 dribbling and dropping of further amounts of
a’ form of suitable character to hold it in shape
liquid along the sides of the container.
during ?lling. The containers may be ?lled with
When the operator releases the pressure
any desired fluids and are particularly useful for
against corners I6 and I8, the resiliency of the
containing individual servings of coffee cream,
material causes the container to spring back to
beverage, or the like. The ?uids with which the 25 its original form, practically closing the opening.
containers are to be ?lled may be placed in the
It is understood that, if desired, the weakened
containers while thus inverted.
line 30 need not contain the depressed portion
The ?lled containers may be capped by assem
3| and may extend across the top wall of the
bling the bottom wall structure. This structure
container in any desired way from one corner to
may be formed from a single rectangular sheet B, 30 an opposite corner. Also while the container
as shown in Fig. 5 of the drawing. The sheet B
shown in the illustrated embodiment has four
has a central rectangular portion 40 which corre
sides with top and bottom walls, the container
sponds, in the embodiment illustrated, with the
may also be formed of six or other number of
size and shape of the top wallvlll. The edge por
sides. The top wall may thus be outlined as a
tions 4| of the sheet B are foldable along the lines 35 polygon having a desired number of sides. In
42 so as to form depending portions. The corner
any case, the weakened line, which upon rupture
or intermediate portions 43 may be folded in
provides the opening, should extend from one
wardly along the corner fold lines 44. As shown
corner of the top wall to an opposite corner. The
in Fig. 3, the bottom Wall 40 ?ts within the con
term "opposite corners” is intended to designate
tainer and the depending portions 4| engage the 40 corners having at least two sides between them
inner surface of the walls of the container. The
as distinguished from corners joined by a single
extreme edge portions 52 of the bottom wall B
side.
are folded outwardly across the bottom edge of
The material from which the improved con
the container and then upwardly along the outer
tainer is formed may preferably be paper which
surface of the wall of the container. There is thus
is of suitable thickness and strength. If the
provided an outwardly-extending portion 5|
containers are to hold liquids, the paper material
which is disposed beneath the lower edge of the
may be treated to prevent its being weakened or
container.
penetrated by the liquids.
Preferably, as seen in Fig. 5, the bottom wall
While only a single embodiment of the inven
B is cut away at the corners so as to provide edge 50 tion has been described in detail, it is expected
portions 52 of a length substantially coextensive
that many changes may be made and that the
with the sides of the container. The bottom wall
improvements may be practiced in vastly di?er
may be placed in position by pressing it into the
ent forms, all within the spirit of the invention.
container, thereby forming the depending por
I claim:
tions 41 along the inner surface of the walls of
1. A container comprising a sheet of paper ma
the container. The extreme edge portions 52
terial having a central portion which forms a
may then be turned outwardly and upwardly and,
rectangular top wall, side portions of said sheet
adjacent the edges of said central portion being
adhesive.
disposed at an angle with said top wall to form
So ?lled and sealed, the containers may be 60 the sides of said container, the portions of said
stacked in rows and on top of each other. When
sheet intermediate of said side portions being
so stacked, the containers are particularly strong
folded within the container, and a bottom wall‘
and will not rupture, even when subjected to quite
secured to the bottom edges of said sides, said
severe shock. The individual containers are ex
top wall containing a weakened line extending
ceptionally strong and have no tendency to open 65 between opposite corners thereof and adapted to
in any ordinary handling. Most shocks received
rupture so as to open the container for emptying
if desired, may be sealed in position by means of
by such a container subject the structure to pres
the same when said opposite corners are pressed
sure between opposite faces and such a pressure
toward each other.
places no stress on the weakened line 30 and does
2. A container comprising a sheet of paper ma
not cause any rupture of the material along this 70 terial having a central portion which forms a
line-
'
When it is desired to empty the container, it is
necessary only to grasp the container in the hand
.and with the thumb and , fore?nger; press the
corners l6 and I8 of the top wall towards each
square top wall, side portions of said sheet ad
jacent the edges of said central portion being
disposed at right angles with said top wall to form .
the sides of the container, each of the portions
of the sheet intermediate of said side portions
2,409,692
5
being formed in two folds each extending from
a corner of the container and disposed inside
and adjacent to a side of the container, and a
bottom Wall secured to the bottom edges of said
sides, said top wall containing a weakened line
extending between opposite corners thereof and
adapted to rupture so as to open the container
for emptying when said opposite corners are
pressed toward each other.
3. A container as set forth in claim 2 wherein
6
opposite corners, side portions of said sheet ad
jacent the edges of said central portion being
disposed at an an'gle with said top wall to form
the sides of said container, the portions of said
sheet intermediate said side portions being folded,
and a bottom wall secured to the bottom edges
of said sides, said top wall containing a weak
ened line extending between said opposite cor
ners and adapted to rupture so as to open the con
tainer for emptying the same when said opposite
corners are pressed toward each other.
said sheet of material is octagonal in shape and
6. A container comprising a sheet of paper ma
the bottom edges of said folds are parallel with
terial having a central portion which forms a
the bottom edges of said sides.
non-circular top wall with at least two oppo
4. A container comprising a sheet of material
having a central portion which forms a rectangu 15 sitely disposed corners, side portions of said sheet
adjacent the edges of said central portion being
lar top wall, side portions of said sheet adjacent
disposed at an angle with said top wall to form
the edges of said central portion being disposed
the sides of said container, and a bottom wall se
at right angles with said top wall to form the
cured to the bottom edges of said sides, said top
sides of said container, the portions of said sheet
intermediate of said side portions being folded 20 wall containing a weakened line extending be
tween opposite corners thereon and said weak
within the container, and a bottom wall of rec
ened line being straight except for a portion near
tangular shape having depending edge portions
the center where it dips in a direction at right
and secured to said side walls, said top wall con
angles to said corners, said weakened line being
taining a weakened line extending between oppo
site corners thereof and adapted to rupture so as 25 adapted to rupture and form edges in said top
‘wall which spread apart when said corners of
to open the container for emptying the same
said top wall are pressed toward each other, the
when said opposite corners are pressed toward
dipped portion of said top line when ruptured
each other.
serving to provide a lowered pouring edge.
5. A container comprising a sheet of paper ma
terial having a central portion which forms a 30
CURT E. NYBERG.
non-circular top wall having at least one pair of
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