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Патент USA US2122968

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July 5, 1938.
H. E. TOWNSEND
Filed Oct. 23, 1933
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2,122,968
Patented July 5, 1938
2,122,968
'2 ‘UNITED STATES
‘PATENT: OFFICE
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Harry E. Townsend, Brooklyn, N. Y.; ‘Title Guar
ante and Trust Company executor of the el
tateofsaidHarryE, Townsend, deceased
Application October 2:, 1933, ‘Serial No. 694,831
1 Claim. (01. 215-40)
‘My invention relates to hermetically sealed Jected to sterilizing or
heat, the extent
to which the closure may be so lifted being
One of the objects of my invention is to pro ‘somewhat exaggerated, as shown;
vide a container and closure of such construc
Fig. 5 is a sectional view similar to Fig. 3 show
‘tion‘that food to be preserved can be placed in ing an implement in position to remove the clo- .5
sure from the container;
the container in an uncooked or unsterile con
dition, the closure hermetically sealed on the
Fig. 6 is a sectional view, taken on the line
container with‘ or without vacuum, and the sealed 6-6 of Fig. ‘3; and.
'.
.
_
package subjected to cooking or sterilizing heat
Fig. 7 is a view similar to Fig. 3 of a modi
10 without danger of impairing’ the hermetic seal i‘ication of the invention.
v
10
or subjecting the package to excessive internal
The preferred embodiment of‘ my invention
pressure.
illustrated in Figs. 1 to 6, inclusive, of the draw
‘ Another object is to provide a container of the ing, comprises a glass jar 2, a sheet metal cap 4
and an elastic ‘gasket 6.
. character indicated which is so constructed that
15 during the sterilizing or cooking operation, when
The jar is provided with a cylindrical mouth 15
excessive pressure is generated within the her
portion. 8 of considerable depth, and is further
metically sealed package, the hermetic seal is provided, at the bottom of the cylindrical por
momentarily broken to relieve the pressure and tion, with a narrow horizontal shoulder II and
‘ containers.
‘20
'
the package immediately re-sealed automatically.
a downwardly and outwardly sloping annular
Another object is to provide a construction in
a container and closure ‘to be used in the indi
cated manner, whereby the closure may be sealed
shoulder or face I2.
‘ on the container without a vacuum, the sealed
,
.
20
The gasket 6, which is preferably rectangular
in cross-section, is positioned over the mouth
portion 8 of the jar and upon the horizontal
package subjected to sterilizing or cooking heat, , shoulder ID. The gasket is made slightly smaller
25 and upon the cooling of the package, a vacuum in ‘diameter than. the cylindrical mouth portion 25
,
or partial vacuum created therein.
so as to cause‘ it to tend to hug the mouth por
‘ Another object is to provide a package of the
indicated type in which a liquid or semi-liquid
content may be maintained for a predetermined
tion when placed thereon.
The cap 4 is provided with a ?at top portion
I4, and a skirt having a crown portion E8, an
boil and without causing the pressure in the
outwardly extending portion i8 and preferably 30
with a downwardly extending portion 20, ter
minating in the curled over portion 22. The
package to rise above a predetermined degree.
closure can be sealed on the container by pass
‘30 time at a temperature corresponding with its
boiling point, without causing ‘the contents to
ing it over the cylindrical mouth portion 8 of
a novel and improved package of this character ‘ the container and pressing it down on the gasket .35
in which the closure may be easily removed and seated on the shoulder l0.
’
replaced on the container with or without the ‘ ‘ Except as hereinafter described, the parts
gasket, the closure when replaced being held by above referred to may be the same as parts of the
'
frictional engagement with the container.
device illustrated, described and claimed in my
40
I attain these and other objects by means of U. 5.. Patent No. 2,099,710, issued November‘23, -40 '
, Another object of the invention is to provide
the construction illustrated in the-accompanying
‘drawing in which:—
t
n
Figure 1 is a side elevation of a container
and closure embodying my invention with ‘the
45 closure shown partly in section;
Fig. 2 is a detail sectional view on an enlarged
scale, taken on the line 2--2 Fig. l, but showing
the closure in the position it may assume at the
beginning of the gasket ‘compressing operation;
'50
‘1937.
.
One of the principal features of the present in
vention is the provision of means whereby the
closure is yieldably held sealed on the container
independently of atmospheric pressure, and, in 45
case excessive pressure is generated within the >
sealed package, the seal is momentarily broken
to relieve the pressure and the package instantly
, and hermetically re-sealed.
Fig. 3 is a view similar to Fig. 2 but showing
As shown, the cylindrical mouth portion I of :50
the container is provided with avplurality of
the closure sealed on the container;
Fig. 4 is a view similar to Fig. 3 but showing projections or nubs 24, which project outwardly
the closure as it may be momentarily lifted to ‘ a distance slightly less than the distance be
relieve excessive internal pressure that may be tween the cylindrical mouth portion and‘ the
55 generated while the sealed package is being sub
crown it of the closure. These projections are 55
aisaoes
2
a package subjected to this process'are abso
' preferably curved circumfeientiaily of the jar,
asshowninll'lg.o,andfromapoint near their
lutely sterile.
tops are tapered downwardly and inwardly so
It will be apparent thatthe sise, spacing and
inclination of the projections and the diameter
that these parts of the projections form portions
of inverted cones, the upper portions of the pro
In the crown ll of the closure there is formed
of the tension bead of the closure may be varied
to meet different conditions. With the use of
jars or tumblers having their mouth portions ap
proximately two and one-half inches in‘ diameter,
an- inwardly‘ projecting annular head or groove
satisfactory results have been secured with the
jections, being beveled toward the edgeof the
mouth portion.
'
-
-
-
II, the inner diameter. of which is slightly vgreat- .use of six projections on the jar which are of 10
er than the cylindrical mouth portion I of the
container, but less than the diameter of a circle
short radius in cross section and are otherwise
proportioned as shown in the drawing, the bead
bounding the most outwardly lying portions of
on the cap being of proper diameter and the re
the projections 24.
siliency of the material of the cap being such as
to obtain the required tension when the cap is 15
'
‘
'
when the closure is forced down over the
mouth of the container, the annular; head is
“ applied.
distorted from a true circle as it passes over the
most outwardly extending portions of the projec
‘tions 24, and, although this distortion becomes
20 less as the closure is pushed down to scaling p0;
sitlon, it is still present to some degree as shown
in Fig. 6. The constricting influence or tension .
of the distorted bead, as it bears on theidown
wardly and‘ inwardly tapering‘ surfaces'of the
projections, readily urges the closure in the
downward. direction with ‘su?icient force to com
press the gasket and seal the closure on the con
'30
tainer independently of atmospheric pressure.
This construction provides the advantage that
the container can be filled with an uncooked or'
unsterilized product, the closure sealed on the
container with or without a vacuum, and the
sealed package subjected to cooking or ‘sterilizing
When it is desired to remove the closure from
the container this may be easily done by inserting
a pointed implementlbetween the lower edge of .
the skirt of the closure and the downwardly
sloping surface I! of the container sov that its
point is in position to rest on the horizontal
shoulder ID, as shown in Fig. 5. In this position
the point of the implement is a considerable dis
tance above the lower edge of the skirt of the
closure and some distance inwardly therefrom
which gives suiilcient‘ leverage so that a single
upward movement'of the tool will pry the clo
sure entirely free of the container.
When it is desired to provide a closure that 30
can be used in the indicated manner and that is
at the same time adapted'to be re-sealed on the
container without the gasket, the closure may be
made as illustrated in Fig. '7. In this case, the
heat for any desired length of time without dan
35 ger of displacing the closure or subjecting the‘ ‘inside diameter of the crown of the closure is 35
package to excessive internal pressure. When made slightly less than the greatest diameter of
the closure is initially sealed on the container
without a vacuum the head space of the package
is, of course, filled with air, and it is very de
40 sirable that as much as possible of this air be
expelled from the package, not only that the re
sulting vacuum may aid in holding the closure
securely sealed on the container, but because the
oxygen of the air is harmful to many food prod
ucts. It may also be desirable in some cases to
maintain the contents of the package at a tem
perature corresponding with their boiling point
' but without permitting boiling to occur.
If the
contents are allowed to boil and, therefore, to
50 vaporize, some of the vapor will be forced‘ out of
the package, in consequence of which, the pack
age willlose-weight.
-
With the construction described it is possible
to expel the air from a package that has been
55 sealed without a vacuum and then to maintain
the contents at. a temperature corresponding
with their boiling point without causing the con
tents to boil. This is so, because, as the tempera
ture of the package increases, the air in the head
spaces expands and the closure is lifted (Fig. 4)
su?lciently to permit a portion of the air to
escape, whereupon the constantly present con
stricting in?uence of the head‘ 26 on the projec
tions 24 again instantly urges the closure to re
65 scaling position. When enoughrof the air has
escaped so that what remains has not enough ex
pansive force to lift the closure, the slight pres
sure it exerts upon the surface of the liquid con
tents of the package is su?lcient to prevent the
70 contents from boiling even though they may be
at boiling temperature. The package remains
hermetically sealed at the end of the cooking or
sterilizing operation and no further attention to
the seal is necessary. 0! course, the contents of
the projections 24. When the closure is so made,
the frictional engagement of the projections 24
with the crown of the closure is not su?icient to
prevent the tension bead 26 from forcing the 40
closure down into sealing engagement with the
gasket.
_
As will be evident to those skilled in the art,
‘my invention permits various modi?cations with
out departing from the spirit thereof or the scope
of the appended claim.
What I claim is:
The combination of a container having 9. cy
lindrical mouth portion and a gasket seating
shoulder positioned a distance below the top of 50
said cylindrical portion, an elastic gasket seated
on said shoulder, and a closure of resilient ma
terial having a cylindrical crown portion adapted
to fit over said cylindrical mouth portion and a
portion below said cylindrical crown portion
adapted to compress said gasket on said shoulder,
said cylindrical mouth portion of the container
being provided with a plurality of spaced projec
tions having the lower portions of their outer
faces tapering downwardly and inwardly, and 60
said cylindrical crown portion of the closure be
ing provided with an inwardly directed bead
having an inner diameter slightly greater than
the diameter of said cylindrical mouth portion
but less than the greatest diameter of said pro 65
jections, whereby when the closure is positioned
on the container with said inwardly directed
bead engaging the downwardly and inwardly
tapering faces of said projections, the constrict
ing eifect of said head urges the closure in a 70
downward direction and holds said gasket com
pressing portion of the closure in yieldable en
gagement with said gasket.
‘
HARRY E. TOWNSEND.
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