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Патент USA US3055549

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Sept. 25, 1962
W. F. PILLNlK
3,055,539
METAL CONTAINER
Filed Aug. l0. 1960
2 Sheets-Sheet 1
(É
Sept. 25, 1962
3,055,539
w. F. PILLNIK
METAL CONTAINER
Filed Aug. l0, 1960
2 Sheets-Sheet 2
/ß
INVENToR.
WAL 7'¿R FAMA/K P/LM//K
BY
MQW
3,055,539
United States Patent O " rice
Patented Sept. 25, 1962
2
1
An object of the present invention is to provide a sheet
3,055,539
METAL CÜNTAINER
Walter Frank Pillnik, Fox River Grove, Ill., assignor to
American Can Company, New York, N.Y., a corpora
tion of New Jersey
metal container with a tear strip opener which will over
come the problems hereinbefore pointed out.
Another object is to provide such a container wherein
the need for a separate internal collar element is elim
inated with a resultant savings in material.
Another object is to provide such a container wherein
the potentially harmful raw edge on the container body
remaining after the tear strip is removed is effectively
The present invention relates to a metal container
having a tear strip opener, and more particularly to an 10 shielded by an adjacent rounded bead.
A further object is to provide such a container wherein
improved form of such a container wherein the separate
removal of the tear strip tends to pull the sharp raw edge
collar element is dispensed with and at the same time the
remaining on the container body tighter against the
raw metal edge on the body due to the removal of the
adjacent rounded bead to further decrease its likelihood
tear strip is adequately shielded so as to render it sub
stantially harmless to persons handling the opened 15 of causing harm.
Still a further object is to provide such a container
container.
wherein the separated upper portion of the opened con
In conventional containers of the subject type the con
tainer can be easily replaced and retained for effective
tainer body is provided with a tear strip formed by
reclosure of the container.
two closely spaced parallel sco-re lines and having an
Yet a further object is to provide such a container
extended portion or tongue to engage a key opener. The 20
which is simply constructed and can be cheaply and easily
tear strip is wound about the key to tear it from the
manufactured.
body of the container thereby separating the upper por
Numerous other objects and advantages of the inven
tion of the body and the attached top end closure from
tion will be apparent as it is better understood from the
the lower portion of the body.
With this type of container, a separate collar element 25 _following description, which, taken in connection with the
Filed Aug. 10, 1960, Ser. No. 48,706
15 Claims. (Cl. 220-54)
disposed within the body behind the tear strip is widely
accompanying drawings, discloses a preferred embodiment
used. The collar is secured to the lower portion of
thereof.
l
The above objects are accomplished by providing a
metal container comprising a body A with ends secured
of the lower portion to serve as a seat upon which the
upper portion may be replaced to effect a reclosure of 30 thereto. The body A has a tear strip B defined by two
closely spaced parallel score lines circumscribing the
the opened container. The collar also tends to minimize
body. Below the lower score line the imaterial of the
the hazard presented by the sharp raw edge of the upper
body is formed and collapsed into a downwardly directed
extremity of the lower portion of the body of the opened
inner bend C and then into an upwardly directed outer
container. However, the provision of the separate collar
adds materially to the overall cost of the container in 35 band D so as to have the lower score line located adja
cent to and inwardly from a rounded upper edge on the
addition to presenting manufacturing problems because of
outer bead D. A key opener E is provided> for removing
the fabrication and handling requirements of the multiple
the body and extends upwardly from the upper extremity
elements.
the tear strip B in the conventional manner.
Referring to the drawings:
FIGURE 1 is a perspective View of a metal container
collarless tear strip type containers all of which have 40
embodying the features of the present invention;
disadvantages. One such container used for luncheon
FIG. 2 is an enlarged fragmentary sectional View taken
meats and similar products merely provides a tear strip
substantially along line 2_2. of FIG. 1;
in the container body. Upon removal of the tear strip
FIG. 3 is an enlarged fragmentary sectional view
to open the container, the sharp exposed edges produced
on the separated body sections are extremely hazardous 45 similar to FIG. 2 showing the lower portion of the opened
container after the tear strip and cover have been removed;
and consequently must be carefully handled to minimize
FIG. 4 is an enlarged fragmentary sectional view simi
the possibility of injury to the user. Such a container
lar to FIGURES 2 and 3 illustrating a modified form of
has the further disadvantage of being unadaptable for
the invention and showing the cover applied to the
reclosure.
Another type of collarless tear strip container is made 50 opened container and in use as a reclosure;
FIGURES 5, 6, 7, and 8 are fragmentary sectional
by scoring and forming a triple fold in a ilat body blank
views similar to FIG. 2 illustrating modified -forms of the
and then forming the blank into a container body having
` invention.
a tear strip adjacent a folded rim, the rim being utilized
As a preferred or exemplary embodiment of the in
for reclosure purposes. However, such a design requires
additional _forming equipment to effect thebending and 55 stant invention, FIG. 1 shows a metal container compris
ing a body A having a side seam 11. As shown, the
folding operations on the flat blank and to form the
body A has a somewhat oval shape such as is used for
folded blank into the container body. Furthermore, re
canning whole hams and the' like. However, it is to be
moval of the tear strip usually expo-ses a sharp raw edge
understood that other shapes including a cylindrical form
on the body of the container presenting considerable
hazard to the user when the opened container is being 60 may also be employed. A top end closure 12 and a
Various designs have been proposed in the past for
handled or the contents are being removed.
bottom end closure 13 are secured to the body A prefer
ably, though not necessarily, by the conventional double
seams 14 and 15 respectively.
vantage have generally involved positioning the score
The body A has a pair of parallel score lines 16 and
lines in the outermost layer of a triple fold so that the
raw edge of the opened container body is adjacent to 65 17 (FIG. 2) around the inner surface of the body setting
olf a narrow tear strip B. It is to be understood that the
and partially shielded by the intermediate fold. How
score lines defining the tear strip B may be located on
ever, since theV removal of the tear strip eXerts an out
either the outer or inner surface of the body A depending
ward tearing action tending to pull the outermost fold
away from the intermediate fold, removal of the tear strip v upon the method of fabrication used. The tear strip B
may result in increased exposure of the sharp raw edge 70 terminates in a tongue 13 at the side seam 11 in the
conventional manner. As shown the upper score line 16
on the opened container body and increased hazard
is located in proximity to the double seam 14 by which
therefrom.
Attempts in the prior art to overcome this disad
j
"
3,055,539
3
Y
-
'
-
«
4
the top end 12 is secured to the body A. However, other
locations intermediate the ends would be equally suitable
30 of the inner bead C substantially flush with the ad
jacent inner surface of the body above and below said
and may be desirable in some instances to facilitate re
inner bead thereby providing a smooth inner surface on
the container. The forms shown in FIGURES 7 and 8
moval of the contents from the opened container.
Immediately below the lower score rline 17 the con
Cn
tainer body A is bent at 19 inwardly and slightly down
wardly, thence outwardly and sharply downwardly, and
thence outwardly and sharply upwardly to a point adjacent
the initial bend 19 thereby forming an inwardly directed
somewhat triangularly shaped (as viewed in cross sec
tion, FIG. 2) hollow bead C having a rounded inner pe
riphery 20. From the point adjacent the initial bend 19,
the body A is bent downwardly approximately 180° and
thence directed inwardly and sharply downwardly adjacent
to the outwardly and sharply upwardly extending portion
of the hollow bead C, thus forming a flattened outer bead
D having a rounded upper edge 21. The rounded upper
have the rounded edge 21 disposed substantially in align
ment with the outer periphery of the body A with the
inner bead C and outer bead D being formed so that
the outer surface 31 of the outer bead is substantially
ñush with the outer surface of the body above and be
low said outer bead.
It can be readily seen that the improved tear strip con
tainer disclosed is unique in that it embodies desirable
structural features and at the same time may be easily
manufactured. The elimination of the hazards presented
by the sharp raw metal edge produced when the tear strip
is removed is accomplished simply and effectively. The
operation whereby the tear strip is torn away outwardly
edge 21 projects slightly beyond the outer periphery of
to open the container actually urges the sharp edge re
the container body A and is disposed adjacent to and out
maining on the can body toward the shielded position,
wardly from the lower score line 17.
20 rather than to increase the exposure of this raw edge and
thereby increase the possible hazard therefrom as exempli
A key opener E is removably secured to the top end
fied by the prior art. The tear strip structure disclosed
12. The container is opened by inserting the tongue 18
also permits efficient and effective reclosure of the con
into the elongated slot 22 of the key opener E and wind
tainer in a very simple manner without the need for a
ing the key opener along the periphery of the container.
As the key opener E is thus being wound, it exerts an 25 complicated body conñguration requiring involved manu
facturing operations.
outward pulling action on the engaged tear strip B tear
Furthermore, the simplicity of structure of the subject
ing it away along the score lines 16 and 17 thereby
container permits it to be easily and cheaply fabricated.
releasing the top end 12 from the body A.
For example, by one possible method, the inner and outer
As shown in FIG. 3 the raw metal edge 23 of the
opened container produced by the lower score line 17 is 30 beads may be produced by partially beading the conven
tionally formed body in a rolling operation after which the
positioned inwardly from and adjacent to the rounded
forming of the beads may be completed by collapsing the
upper edge 21 of the flattened outer bead D. Also the
body. The collapsing operation may be performed simul
outward pulling action required to remove the tear strip
taneously with the ñanging operation wherein the extrem
B tends to pull the raw edge 23 closer to the bead D.
Consequently, in the opened container the potentially 35 ities of the body are flared outwardly preliminary to the
attachment of the ends by double seaming. Consequently,
harmful raw edge 23 is substantially shielded by the
the saving in both material and fabrication costs achieved
rounded edge 21 of the outer bead D and the likelihood
by the elimination of the separate collar element would
of causing injury to the user is essentially precluded.
not be dissipated by a high cost of fabricating the subject
Furthermore, in the preferred embodiment shown, the
upper score ‘line 16 is positioned adjacent to the double 40 container.
It is thought that the invention and many of its attendant
seam 14. As a result, the raw edge 24 produced by the
upper score line 16 when the tear strip B is removed, is
~underneath the double seam 14 and substantially con
tiguous to the countersink portion 25 of the top end 12
,(see FIG. 4) thereby minimizing its exposure so that the
hand of the user is also substantially protected from this
raw edge. This feature is particularly desirable when
advantages will be understood from the foregoing descrip
tion and it will be apparent that various changes may be
made in the form, construction, and arrangement of the
parts without departing from the spirit and scope of the
invention or sacrificing all of its material advantages, the
form hereinbefore described being merely a preferred
embodiment thereof.
I claim:
A modified form of the invention in which the top 50
1. A metal container comprising, a seamed sheet metal
end 12 is adapted to be used as a reclosure is shown
body
having an end secured thereto, two closely spaced
in FIG. 4. In this form the top end 12 has the usual
parallel score lines circumscribing said body and defining
countersink portion 25 adjacent the double seam 14. At
a removable tear strip therebetween for separating said
the base of the countersink portion 25 the end 12 is pro
end
from said body to open said container, the tear strip
vided with an inward extension 26 which, when the end 55
portion of said body consisting of a single thickness of said
12 is used as a reclosure, engages the upper surface
sheet metal, an upwardly extending first peripheral bead
of the inner bead C thereby serving as a stop shoulder.
formed in said body, said bead having a rounded upper
The top end 12 also has a downward extension 27 form
edge positioned adjacent to, and substantially in the saine
ing a plug 28. The plug 28 has a peripheral con-figura
tion substantially the same aS the rounded inner periphery 60 transverse plane as outwardly from the lowermost score
line, and a downwardly extending second peripheral bead
21 of the inner bead C to form a friction iìt therewith.
formed in said body adjacent to and inwardly from said
In order to effect a more eiiicient reclosure the plug 28
first bead and disposed slightly below said lowermost score
may be provided with a plurality of outwardly struck
line whereby upon removal of said tear strip by tearing
nibs 29 formed on the lower edge of the downward ex
in the outward direction, the severed edge formed by said
tension 27. The nibs 29 snap into engagement beneath
lowermost score line is urged towards said rounded edge
the bead C to yieldably retain the top end 12 in the closed
and is effectively shielded thereby so as to render it sub
position as shown in FIG. 4.
stantially harmless to persons handling the opened con
The modified forms of the invention shown in FIG
tainer.
URES 5, 6, 7, and 8 have the added advantage of having
2. The container set forth in claim l wherein said
either the interior or exterior surface of the container 70 rounded edge is disposed outside the outer periphery of
free of projections due to the beads formed in the body
said body.
A, which features may be desirable in some applications.
‘3. The container set forth in claim 2 wherein said body
In the forms shown in FIGURES 5 and 6, the rounded
has an interior surface which is substantially in alignment
the top end 12 is used as a reclosure.
upper edge 21 of the outer bead D is located outside the
outer periphery of the body A with the inner surface 75
and free of inwardly projecting irregularities.
4. The container set forth in claim 1 wherein said
3,055,539
5
rounded edge is disposed substantially in alignment with
the outer periphery of said body.
5. The container set «forth in claim 4 wherein said body
6
body deñning a removable tear strip therebetween for
severing said body to open said container, the tear strip
portion of said body consisting of a single thickness of
has a substantially continuous outer surface -free of out
said sheet metal, the lowermost score line being located
wardly projecting irregularities.
slightly ‘above said inwardly and slightly downwardly
extending portion of said hollow bead and inwardly from,
6. The container set forth in claim 1 wherein said score
adjacent to and substantially in the same transverse plane
as the rounded upper edge of said flattened bead whereby
upon removal of said tear strip the severed edge formed
lines are disposed around the exterior surface of said body.
8. A metal container comprising, a seamed sheet metal 10 by said lowermost score line is disposed adjacent to and
inwardly from said rounded upper edge of said flattened
body having an end secured thereto, a ñrst peripheral bead
bead and is shielded thereby to render it substantially
formed in said body and extending inwardly and down
harmless to persons handling the opened container.
wardly into said body, a second peripheral bead formed in
10. The container set forth in claim 9 wherein said
said body and extending outwardly and upwardly im»
score lines are disposed around the interior surface of
rnediately adjacent to said ñrst bead, said second bead hav
ing a rounded upper edge extending slightly beyond the
said body.
11. The container set forth in claim 10 wherein the
outer periphery of said body, and two closely spaced par
uppermost score line is located adjacent the seam attach
allel score lines circumscribing said body Iand deiining a
removable tear strip therebetween for separating said end
ing said upper end to said body.
12. The container set forth in claim 11 wherein said
from said body to open said container, the tear strip por 20
upper end has a depressed portion extending into the inte
tion of said body consisting of a single thickness of said
rior of said body, said depressed portion having a vertical
sheet metal, the lowermost »score line being located slightly
wall portion with an outer perimeter substantially equal
above said ñrst bead and inwardly from, adjacent to and
to the inner perimeter of said inwardly directed hollow
substantially in the same transverse plane as the rounded
upper edge of said second bead whereby upon removal of 25 bead, said vertical wall engaging in frictional contact
said tear strip the severed edge formed by said lowermost
Within said bead when said upper end is used as a reclo
score line is disposed adjacent `to and inwardly from said
sure for the opened container.
13. The container set forth in claim 12 wherein said
rounded edge of said second bead and is shielded thereby
to render it substantially harmless to persons handling the
vertical wall has a plurality of outwardly struck nibs
30 disposed to yieldably engage beneath said bead whereby
opened container.
lines are disposed around the interior surface of said body.
7. The container set forth in claim 1 wherein said score
9. A metal container comprising a seamed sheet metal
body having upper and lower ends secured thereto, the
material of said body being bent inwardly and slightly
said upper end is yieldably retained as the reclosure on
said opened container.
14. 'I‘he container set forth in claim 13 wherein said
downwardly, thence outwardly and sharply downwardly,
body is cylindrically shaped.
thence outwardly and sharply upwardly to extend slightly 35
15. The container set forth in claim 9 wherein said
beyond the outer periphery of said body, thence inwardly
and sharply downwardly below and adjacent to said out
wardly and sharply upwardly extending portion thereby
forming an inwardly and downwardly directed hollow
bead around said body with an outwardly and upwardly 40
projecting ñattened bead immediately adjacent thereto,
said flattened bead having a rounded upper edge disposed
slightly beyond the outer periphery of said body, and two
closely spaced parallel score lines circumscribing said
body is substantially ovate in horizontal cross-section.
References Cited in the ñle of this patent
UNITED STATES PATENTS
1,750,251
1,750,380
Young _______________ __ Mar. 11, 1930
Aulbach et al __________ __ Mar. ll, 1930
2,496,568
Tomarin ___ ___________ __ Feb. 7, 1950
2,694,502
Henchert ____________ __ Nov. 16, 1954
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