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Патент USA US2060145

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Nov; 10, 1936.
Filed OCÍ‘.. 19, 1935
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Patented Nov. 10, 1.936
William Martin Vogel, Bloomfield, N. J.
Application October 19, 1935, Serial No. 45,727
8 Claims. (Cl. 113-19)
metal from vwhich the cover and its retaining
flange-are both formed. Disk I0 in its initial
The‘object of the invention is to provide a `form is merely a fiat circular section of metal.
simple, effective form of closure for the »types of and by means of a suitable forming die, it is`
‘5 cans customarily used for containing liquids, and caused to assume the cupped form shown in Fig. 1, 5
where'the cover when initially applied must pro
having a raised central portion II surrounded by
This invention relates to cans and to an im
proved method of making closure means therefor.
vide a secure, liquid-tight ñt’while at the same
the laterally extended marginal flange I2. Mem
time must permit-ofeasy manual removal and
ber I0 is next cut into two parts, as shown in
Fig. 2 by severance through its sidewall at a
point between the closed end of the raised part l0
II and flange I2, along the line I3, the upper
cup-shaped one of these parts indicated at Ilv
being used for the formation of the cover, while
A further- object of the invention is to provide
a simple method of making the closures whereby
I the number of manufacturing operations are de
creased and considerable saving of sheet metal is
also effected, resulting in a highly satisfactory
15 closure at a lowered manufacturing cost. A still
further object of the invention is to provide an
-the lower ring-shaped part indicated at I5 being
employed to produce the cover-retaining ring or 15
To form the cover as shown at I6 in
Fig. 3, member I4 has the edge of its vertical
cans whereby a perfect seal is provided between iiange'll rolled to form the edge-reinforcing bead
the cover and its retaining ring, insuring a liquid ' I8, and for the purpose of providing reinforce
` improved means of applying the covers of the
20 tight fit of the cover and at the same time al
lowing its easy removal and replacement. y
In the accompanying drawing, Fig. -1 is a sec
tional view through a dished disk from which
l both »_ the cover member and its retaining ring
25 are produced; Fig.-2 is a similar sectional view,
showing the disk cut into the two parts which _are
ment, it may also be dished slightly as shown 20
at 23. Vertical ñange I9 on member I5 consti
tutes the inner edge or termination of the cover
retaining ring, as clearly shown in Fig. 3, while
lñange I2 is operated upon by a suitable die to
_shape it as clearly shown in Fig. 3 and to provide `25
used'to form-the cover and its retaining ring;
the annular channel 20 and downwardly extending outer ñange 2|.
Fig. 3 is a‘sectional view of aportion of a can,
The upper edge of the can 22 fits into channel
showing the retaining ring shaped and ñtted into 20 and is secured therein by seaming‘methods
30' position on the upper edge of the can body and the Vwell known -in 'this art, whereby thelcover- 3
cover about to be inserted within said ring; retaining ring is securely attached to the top of
Fig. 4 is a- sectional view of the upper end of a the can body in the position clearly shown in
-can with the retaining ring and cover in place, Fig. 3.
_showing the‘fexpanding disks about to exert lat- `
After the can has been' iilled, the cover is
'-35 eral pressure upon the flange of the cover and - pushed into place within the retaining ring, the
jdependeni» inner flange of the retaining ring to \ partsof cover and'retaining ring- then occupying
laterally distortY both flanges; Fig. l5 is a view the position shown in Fig. 4 where it will be seen
of the same structure as is disclosed in Fig. 4, that vertical flange I'I of the cover is surrounded
Ishowing the flanges on the cover and retaining by and lies in close contact with the downwardly
¿o ring after- being distorted to vsecurely hold the extending fiange I9 of the retaining ring. By
cover in place within the ring; Fig. 6 is a view of the n'ext step in the method, distortion of the
a modified type of expanding disk employed for flange IT of the cover and in some cases, of the
distorting the cover flange only; Fig. 7 is another iiange I9 of the retaining ring, takes place. One
form of disk which distorts the cover flange and Way in which this step is carried outis shown
45 the retaining ring in a slightly different manner; in Fig. 4. For this, a number of rotating shaping
Fig; 8 shows another type ‘of disk which forms disks 25 are employed, each of said disks having
interengagingannular ribs on the cover flange its peripheral edge so shaped as to engage a.
and on tlîe iiange of the retaining ring; and Fig. 9 portion of the flange I1 of the cover while rthe
is a sectional view of a modified structure where
disks are being rotated and simultaneously
50 in the- inner edge ñange on the retaining ring is spread apart from one anotherhorizontally, and
extended upwardly, and a rounded bead is dis
force a. part of said flange outwardly.
torted out of ’the ñange of the cover to lock be-'
In Fig. 4 the edge or >periphery 26 of each of
neath- the curved portion of the retaining ring the several disksvis so shaped that when the disks
are thrust laterally, the edge 264 of each disk `will
55 In the drawing IIIA indicates@ disk or sheet distort the flange I_-'I of the cover member out-
55 -
- 2,060,145
wardly and also slightly distort the ñange I! of ' prising, forming a disk into a cup-shaped mem
the retaining ring outwardly, substantially as
shown in Fig. 5, This lateral distortion ofthe
two contacting flanges I1 and i8 will serve to
ber provided with a laterally extending annular
so interlock the cover with the retaining ring
that an eifective seal between the cover and ring
is produced; At the same time iiange I1 pos
flange and the closed end òf the cup-.shaped
sesses suil‘icient resiliency or springiness to per
mit the cqver to be easily pried up out of the re
said ring tothe top of a can in such a position
that it is provided at its inner edge with a down
flange, severing said member on a line parallel
to the plane of the flange at a point between the
member to form the member into a cup-shaped
cover and an annular retaining ring, attaching
10 taining ring by the insertion of a suitable tool wardly extending annular iiange, seating the 10
beneath the rolled or beaded edge Il of the cover. ._ cover within the ring1 with the closed end of the
In Fig. 6 a modiiied type of shaping disk 45 is
cover positioned below the lower edge of the
'downwardly extending flange on the'ring, and
laterallydistorting a partof the cover onlyand
adjacent to its closed end to cause it to‘be ex 15
when moved in a direction parallel to the plane
15 of the disk, the edge thereof will distort the part
30 only of the flange I1 of the cover, without dis
tended laterally below the lower edge of the
torting thegdependent ñange I! of the retaining
ñange on the ring.
2. In the method of making-a can closure, the
steps of seating a cover member having a cir
'I'his distortion of the ñange I1 of the
cover serves to force a part of said flange later
ally and beneath the lower edge Il of flange I9
cumi’erential iiange within a retaining ring lo
of the retaining ring, providing a secure seal
cated on a can top, and distorting the flange on
and cover lock.
the cover member laterally to cause the
In Fig. 7 another type of disk 46 is shown, the ' portion to >project beneath the lower edge of the
same having a stepped periphery 32 which serves '
retaining ring without distortion of the retaining
to distort the flange oflthe cover as well as a part
of the flange Il of the retaining ring to form an
annular rib or bead 33 which engages with the
outwardly distorted part IIa of the retaining
In Fig. 8 the disk Il is shown provided wi
an annular rib l! on its periphery, which by
pressure of the disk against flanges I1 and IS
3. In the method of making a can closure. the
'steps of attaching a iianged ring-shaped cover
retainer to the top of a can, placing a cup-shaped
cover member within said retainer so that a
ñange on said cover member is in contact with 30
and extends co-extensively. with the flange on
the retainer, and thereafter providing an‘inter
locking annular groove and bead on‘the flanges
distorts theseV flanges to form the interlocking
beads Il and 31 on flanges I 9 and I1 respectively. 'of the cover member and retainer at a distance .
In Fig. 9 the retaining ring Il diifers from that above the respective lower edges of the same by 35
shown in the several figures of‘the drawing, since forcing said groove and bead portions of said
it has the nange IQ’directed upwardly on curved ` flanges outwardly simultaneously.
lines rather than downwardly. _ The disk 38 there j 4. The method of making a can closure com
shown distorts the iiange I1. of the cover member prising, forming a disk into a cup-shaped mem
to form annular, rounded, curved projection 39
which extends underneath the upturned or
curled iiange Il of the cover retaining ring.
In the several embodiments of the invention
'shòwnrin Figs; 4 to 8 inclusive,'the resiliency of
ber provided with a closed end and a side wall
from which extends a laterally projecting annular
flange, severing said` member thr hits side
' the- cover member flange I1 is suiiicient to enable
wall on a line parallel to the plane of thel mem
ber and at a point between theiiange and the
closed end of the cup-shaped member to separate~
it to be sprung or distorted to disengage the
cover fromthe retainingringbytheuseof any
annular flanged retaining ring, attaching said'
the member into a vcup-shaped cover and an
manually operated prying tool. In Fig. 9 how
ring to the top of ,a can in such a position that
ever, where iiange Il of the retaining ring is» its flange‘is located at its inner edge, seating the
formed on a curved'line, the resiliency inthis' -cover within the ring with the closed end of the
Y flange provides the springinesshnecessary to per-_ cover positioned adjacent the lower edge of the
mit the cover to be sprung out of lits engagement flange on the ring, and laterally distorting a part
with the flange by a prying movement.
~ of the cover` only to cause it to be extended' la
The rotating shaping disks employed for the erally below the flange on the ring.
' .
lateral »distortion of the' cover iiange. or for the/
5. A closure for cans comprising a ring secured 55
distortion of the cover- flange and retaining ring'I to the top of a can body, said ring having a
flange, are made in various forms according to
the manner in which it is desired to interengage
the cover with its retaining ring. I, therefore, do
not limit my invention to the use of any speciflc
edge,_ a cup-shaped cover member iltted‘within
that these disks may be varied in their periph
end >of the cover to for'm an annular projection
downwardly bent flange extending along its- inner
said ring, said cover-member having a verticallyv
disposed annular circumferential flange, with
form of cover shaping disk, since it is obvious v parts of said ñange distorted adjacent the closed
eral shape to suit different requirements f_or pro
viding a greater or lesser effectiveness of seal -for
the can.
, '- -
engaging below the lower edge of the ñange on
'6. A closure for cans comprising a ring> secured
to the top of a can body and provided with an
~By means of the process of manufacture herein
outlined, it will be obvious that a cover and its inner upwardly curled edge, a _ cover member
retaining Vring can be economically and. eiïecf
iitted within said ring andy having a closedend
tively produced from a single disk 'of metal vwith
70 out any material waste, with a reduction in the and an upper edge formed with a bead limiting 70
steps normally required for the manufacture oi the insertion of the cover -within the ring by abut-_ _
_ a closure of this character, andwith a resultant
_reduction in_manufacturing 60st. ` "
What I claim is: ,
ment against the uptumed inner edge of the ring,
the cover member having'a circumferential iiange
, extending from the bead, said flange being formed
l.‘The method of m a can 010mm? çom- " with an annular outwardlyl distorted portion ad' 75
jacent its closed end for engagement beneath
L„he curled inner edge of the ring.
'7. A closure for cans comprising, a ring se
cured to the top of a can body and provided with
an inner downwardly extending flange, a. cup
shaped cover member fitted within said flange
and having a closed bottom located below the
lower edge o`f said flange, said cover` having a
circumferential vertically disposed wall bearing
10 against the flange and of greater depth than the
width of the flange, said wall having a straight
portion extending below the lower edge of the
flange and a locking bead adjacent its upper edge,
said flange being complementarily grooved to en
15 gage the locking bead on the walll of the cover.
8. A closure for cans comprising, a ring se
cured to the top of a can body, said ring having
a downwardly bent flange extending along its
inner edge; a cup-shaped cover member ñtted
within said ring and having a closed lower end lo
cated below and spaced from the lower edge of
the flange, said cover member having a vertically
disposed circumferential wall bearing against the
ñange, with portions of the wall and flange dis
torted to interengage and hold the cover in place
within the ñange, said cover having undistorted
or straight wall portions located below the lower
edge of the flange.
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