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Патент USA US2406911

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Sept. 3, 1946.
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.IH. SCHRADER
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METHQJS OF CLOSING SHEET METAL CONTAINERS‘:
‘ Original Filed May 28,‘ ‘1940
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2,406,911
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Patented ‘Sept. 3, 1946
2,406,911
UNITED STATES - PATENT orricig
2,406,911
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METHOD 0F CLOSING SHEET METAL
CONTAINERS
Herbert Schrader, Wheeling, W. Va., assignor to
Continental Can Company, Inc., New York,
N. Y., a corporation of New York
Original application May 28, 1940, Serial No.
337,696, now Patent No. 2,338,013, dated Decem
ber 28, 1943. Divided and this application De
cember 2, 1943, Serial No. 512,606
1 Claim.
1
The invention relates to a sheet metal con
tainer of the type shown and described in my
application Serial No. 337,696, ?led May 28, 1940,
(Cl. 113—121)
2
a ?ange l0 projecting outwardly from the skirt
1, which ?ange is-upturned as indicated at I I.
After the container end has been placed in the
container body, then a chuck i2 is placed in the
depression in the container end and this chuck
now Patent No. 2,338,013, patented December 28,
1943, for Sheet metal containers, of which the
present application is a division.
will force the closure end 5 down into the con
An object of the invention is to provide a meth
tainer body so as to ‘cause the sealing material
od of attaching a closure end of a metal container
to contact with the hollow bead 4 and provide
to the container body so as to produce a tight
a tight seal between the closure end and the
seal connection between the body and the end. 10 body. After the container has been chucked,
A further object of the invention is to provide
then a curling roll I3 is brought into contact with
a method of connecting a closure end to a con—
the ?ange Ill. Said curling roll has a groove M
tainer body wherein the closure end can be pried
formed therein which contacts with the curled
loose from the container body when it is desired
upper portion ! l of the ?ange of the closure mem
to open the same.
ber, and as this roll l3 moves around the chuck,
In the drawing:
it will progressively roll the ?ange l0 into a hol
Figure 1 is a view showing in vertical section
low bead l5 and force said hollow bead into con
a container body and a closure member therefor
tact with the bead 4, drawing the metal tightly
which is to be attached to the container body by
around the bead 4. It will be noted in Fig. 4
the improved method;
'
that the end of the body wall forming the bead
Figure 2 is a detail showing in vertical section
4 contacts with the wall of the container and
the container body and the closure member as
forms a rigid abutment so that during the form»
sembled preparatory to the closing of the same;
,ing of the bead !5, the metal will be drawn
Figure 3 is an enlarged detail showing the ?rst
around the bead 4 as noted, and this will cause
step in the method of securing the closure end 25 the sealing material 9 to spread out and seal the
to the container body;
joint between the closure and the container body.
Figure 4 is a view similar to Fig. 3, but showing
The tight seal is obtained by cooperative action
the curling roll as having formed a hollow bead
of the chuck which presses the closure end into
in the ?ange of the closure end and as having
tight engagement with the sealing material and
placed said bead so as to secure the end to the
the curling roll which, as it forms the bead l5,
closure body in sealed relation thereto;
draws the metal around the bead 4. This draw
Figure 5 is a detail in section showing the end
ing of the metal by the curling roll is accom
attached to the body; and
plished because of the fact that the curling roll
Figure 6 is a similar view showing a tool applied
moves in toward the body wall of the container
for removing the end from the body without cut 35 in a plane which is at right angles to the body
ting or rupturing the metal parts.
wall.
The container which is closed with the im
When the container end is ?nally secured in
proved method includes a body portion l to which
sealing relation to the container body, the bead
I5 is still spaced away from the wall of the con
a bottom end 2 is secured by a double seam 3.
The body wall at the upper end thereof is rolled 40 tainer body and therefore a tool which is shown
at I6 in Fig. 6 may be inserted between the bead
outwardly and downwardly into a hollow bead
l5 and the body wall for prying the bead outward
4, the end of the body wall being brought into
until it is completely released from the container.
contact with the outer wall of the body. The
The closure end during the removal is slightly
container is closed by a closure member 5 which
45 reformed, but is not cut or destroyed in any way
has a depression formed therein surrounded by
so that it may be readily used as a reclosure for
a vertical wall 6. The closure member has a
the container.
depending skirt 1 which is spaced away from the
Having thus described the invention, what I
vertical wall 6 so as to provide a channel 8 which
claim as new and desire to secure by Letters
?ts over the bead 4 on the container body. The 50 Patent is:
vertical wall 6 is of suf?cient length so that when
A method of closing and sealing sheet metal
the closure member 5 is placed in the container
containers consisting in rolling the body wall of
body as shown in Fig. 2, said vertical wall will
the container outwardly, inwardly and upwardly
extend below the bead 4. Located in- the channel
into a hollow bead, forming a closure with a
8 is a sealing material 9. The closure end 5 has 55 central depression surrounded by a vertical wall
2,406,911
3
and a continuous unbroken depending skirt offset
from the vertical wall to receive a gasket and
the bead on the container body, said skirt being
of greater length than the diameter of the bead 5
and having a laterally projecting ‘flange at the
lower edge thereof, placing the closure member
on the container body and while said gasket is
4
?rmly pressed against the bead applying a curling
roll to the ?ange of the closure and progressively
rolling the ?ange into a bead and forcing a por
tion of said bead as it is formed beneath the
hollow bead on the body wall.
HERBERT SCI-IRADER.
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