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Патент USA US2412794

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Dem 17, 1946.
w, P, “)Hm;
Filed July 24, 1941
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Patented Dec. 17, 1946 I
William P. White, Glencoe, Ill., assignor to White
Cap Company, Chicago, 111., a corporation oi’
Application July 24, 1941, Serial No. 403,844
3 Claims. ((1215-40)
This invention relates to packages of a sort
, claims short of the true and most comprehensive
suitable for the preservative packaging of food
scope of the invention in the art.
In said drawing:
Fig. 1 is a fragmentary view of the upper por
tion of a package embodying my invention, show
stuffs and the like and wherein a receptacle in
the nature of a glass tumbler or jar is closed and
hermetically sealed by a closure cap which is re
tained in place by atmospheric pressure. .
ing the upper portion of the receptacle in ele
vation and the closure in section and in process
of being applied to the receptacle; the parts are
One of the objects of this invention is the
provision of such a package which may be sup
plied to the packer at very low cost because of
shown on an enlarged scale and parts‘ are bro
the facts that the glass receptacle may be made 10 ken out of both the receptacle and the closure
quite thin and the closure is of a simple con-.
in order to reduce the lateral extent of the ?g- ‘
struction which permits its being manufactured
ure, consequently, the width of the ?gure as here
at very low cost.
illustrated is in a very‘considerably reduced pro-4
Another object is the provision of such a pack
portion relative to the thickness and height of
age wherein the receptacle and closure are so 15 the parts;
for'med'and related that the closure may be- ap
Fig. 2 is a similar illustration showing the
plied and sealed on the receptacle very quickly
relationship of the upper end portion of the re
and with reliable certainty incident to high
‘ ceptacle and the closure when the latter has
speed commercial packing procedure. '
dropped to rest thereon, as from the relationship
Another object is‘ the provision of such a pack 20 ‘shown in Fig. I, all of the parts being shown in
age in which the closure will remain securely in
place when sealed on the receptacle and form a
Fig. 3 is an illustration similar to Fig. 2 but
buifer or fender for protection of the glass recep
showing the relationship of the parts after the
tacle against lateral impacts, yet which may be
closure has been pressed to sealing position on
removed quickly and easily by the housewife,
when desired, without involving any puncturing
or mutilation of the closure itself and without
subjecting the fragile thin glass container to
dangerous stresses or pressures.
Another object is the provision of a package of
the sort speci?ed above and in which the form -
and proportions of the closure and the receptacle
are such that the closure will receive the mouth
of the receptacle very freely, so that it may‘drop
the receptacle;
Fig. 4 is a detail in the nature of an elevational
section through a lateral portion of the closure
and the upper portion 01 an associated receptacle,
the parts being shown on a scale considerably en
‘ larged over that of the preceding ?gures; and
Fig. 5 is a detail illustrating the relationship of
the closure to the receptacle in the course of the
application of the closure by a procedure now
quite generally used, the illustration showing a
_ onto it quite quickly and readily into the position 85 portion of the closure and upper portion of the a
for sealing, and yet wherein the extent of eccen
receptacle in vertical section.
tricity of the closure on the receptacle is limited
For the preservative packaging offood prod
7 in such fashion as to prevent a disproportionate
nets in glass, the useof thin glass receptacles is
or excessive overhang or lateral projection of
desirable from the standpoint of customer ap
the closure at one side of the receptacle as com 40 peal and saving in shipping, weight and pack
pared with the extent of overhang or lateral pro
' aging bulk. Because of their greater frangibility,
jection at the diametrically opposite side.'
however, thin glass receptacles require that the
Other objects and advantages of the invention
will be pointed out or indicated hereinafter or
packaging and sealing operations be performed
_.with increased accuracy and with light pressures
. will be apparent to one skilled in the art upon an 45 and, moreover, increase the di?iculty of obtain
understanding of the invention or its employment
ing airtight seals. The improvements constitute‘
in use.
ing the present invention have been found eifec
For the purpose of aiding in explanation of the
tive to eliminate many of the serio' s dif?culties
invention, I show in the accompanying drawing
and disadvantages which heretofore havegat- forming a part of this speci?cation, and herein -50 tended the use of thin glass receptacles in com
after described, one ‘formin which it may be
mercial packing of commodities in vacuo. The _
embodied. It is to be understood, however, that
nature of the invention can be most quickly as
this is presented merely for the purpose of illus
certained by reference to the illustrative“ em
tration and hence is not to be construed in any
bodiment shown in the drawing.
fashion tor the purpose of limiting the appended 55 The package constituting the present inven- V -
7 tion comprises a glass receptacle, which is desig- _
nated generally by the reference numeral l0,
and a closure, which is designated generally by
the reference numeral H. The receptacle may
be in the form of a jar, tumbler or the like and‘
may be of the character Of very thin pressed
ware. It is formed with an outwardly project
ing peripheral bead I2 at its upper end, whereby
circumferential direction. In Fig. 2 the parts are
shown in the relationship wherein the skirt por
tion I1 is in contact with the bead I! at one side
of the package. This represents the position of
maximum eccentricity of the closure relative to
the receptacle, and it will be observed that in that
relationship the skirt portion I‘I below the point
of contact with the bead is held spaced an ap
preciable distance outwardly from the receptacle
rim is considerably increased. The rim is formed 10 wall, whereas at the opposite side of the package
the margin of the skirt is, perforce, spaced from
with an annular cro'wn ll, which throughout its
the thickness of the wall at or adjacent the top
annular extent lies as nearly as possible ‘in a .
common plane approximately perpendicular to
the receptacle wall by a slightly greater distance
as illustrated in Figs. 2 and 3. Moreover, the
shell skirt is su?lciently shallow to permit .the
the axis of the receptacle. This crown is located
an appreciable distance inwardly from the per 15 closure to be swung freely upwardly to a'position
‘ where the skirt is higher than the mouth rim at
imeter or outermost lateral surface of the bead
one side of the receptacle while the gasket re
mains in contact with the mouth rim at the
The closure ii comprises a shell which is
diametrically opposite location.
formed from sheet material such as tin plate of
suitable strength and stiffness, and it is vshaped 20 ' The thickness of the gasket is such as to per
mit the crown of the mouth rim to be pressed
with a top portion l5 which is of somewhat
into it a substantial distance without carrying
greater diameter .than the receptacle bead i2,
the perimeter of the bead i2 upwardly beyond
‘ and a skirt which depends from’ the periphery of
the skirt portion ll. Due to the fact that the .
the top’ l5 and is shaped adjacent the top with
crown is spaced a substantial distance inwardly
an outwardly projecting circumferential bead
from the outer margin of the gasket when the
ing i8, and below said beading with an approx
closure is resting loosely on the receptacle, the
imately cylindrical portion ll. The deflection of
downward movement of the shell in the sealing
the skirt material from the bead l8 to the de
operation causes displacement, of the plastic
pending sklr-t‘portion i1 is quite abrupt, the
bend at A being substantially sharper than, or 30 gasket material in the outward radial direction
from the entering crown of the receptacle as well ,
on a shorter radius than, the concave curvature
of the bead 18, as illustrated by way of example
in Fig. 4. The cylindrical portion I1 is of some
what smaller external diameter than the beading
l6, and its internal diameter exceeds the outer u Ta
diameter of the receptacle mouth bead i2 suf
iiciently to permit the latter to enter freely and
readily within the shell skirt when the closure and
as in the inward radial direction, and the con
tinuing cooperation of the bead l2 with the skirt
I'I during downward movement of the'closure
‘prevents its creeping laterally on'the receptacle
to a position where the outer margin of the gasket
would reach the crown. It is to be observed also ~
receptacle mouth are in approximately coaxial or -
that the beading l6 accommodates outward dis
placement of the plastic gasket material incident
proximately concentric relationship with the
area or area of contact between the mouth rim
concentric relationship. A gasket H of ?at ring 40 to the intrusion of the mouth rim. As a conse
quence of these several factors, a broad sealing
form is adherently secured to the top H5 in ap
and the gasket material is obtained clear around
the mouth of the receptacle, and the intrusion
rial which is fairly ?rm but ‘plastic at ordinary
room temperature and which may be rendered 45 of the mouth rim into the gasket may be accom
plished with comparatively light pressure. This
slightly tacky by heating. A suitable material
latter effect, ‘as well as the fact that the entry
is a rubber composition which has been cured in
skirt. This gasket is formed of a sealing mate
such fashion as to give it the desired plasticity
and ?rmness. The thickness of the gasket ap
of the crown into the gasket is at a substantial
distance from the periphery of the latter, are of
proximates the height of the beading i8, and its 50 particular importance when thin glass receptacles
are used.
external diameter is‘ preferably approximately
The application and the sealing of the closure
the same as the internal diameter of the cylin
upon‘ the receptacle are preceded by the exhaus
' drical skirt portion i1, while its width consider-_
.tion or evacuation of air from within the closure
ably exceeds the radial thickness of the vessel
. wall inclusive of the bead l2. This gasket pref 55 and the head space of the receptacle, so that after
the closureihas been pressed to sealed position as erably is pre-formed and inserted into theshell
explained above, the pressure within the sealed
package will be below that of the atmosphere and
the latter will hold the closure in place. The
the contacting portion of the gasket slightly tacky 60 closure may be removed by prying it upwardly
through the skirt portion I1 and secured in place
.by pressing it against the top l5 while heat is ap
plied to the latter in’ amount suf?cient to render
and cause it to adhere to the under surface of
the top. In this fashion the gasket may be inti
mately and ?rmly connected to the shell. The
Y in the customary manner by means of a bottle
opener of the conventional hook type.‘
As-pointed out above, the cooperation of the
head I! with the skirt portion I'I limits the ex
depth of the shell skirt is such that the cylin
drical portion i 1 will be opposite the widest diam 65 tent to which the closure may be displaced eccen
trically relative to the receptacle, and also holds
eter of the bead i2 and will extend somewhat be
the lower margin of the skirt spaced away from
low said bead when the‘ under surface of the
the periphery of the vessel at all points, The lim
gasket I8 is resting on the crown [4‘. This rela
iting of the eccentricity of the closure contributes
tionship of the parts is illustrated in Fig. .2, and
it will be seen that when so-associated the re 70 to the appearance of the package. The spacing
ceptacle bead I2 is adapted for cooperation with
of the lower margin oi.’ therclosure' from the wall
of the receptacle has several advantages. When
the skirt portion I‘! to insure that the line of
so spaced, the lower portion of the closure skirt
contact between the crown i4 .and the gasket I8
constitutes a buffer which will yield under lat
is located a substantial distance inwardly from
the periphery of the gasket at all points in the. 75 eral impacts without transmitting their force to
the glass receptacle locally. The projecting mar
gin of the skirt affords secure engagement for the
opener at any point around the package, and
by hand or by being dropped straight downward
ly onto the receptacle, the form of parts facili
tates the entry of the receptacle mouth into the
hence reduces the likelihood of the glass recep
tacle being broken by the slipping off of the
opener. One of the most important advantages
lies in the fact that the construction avoids the
application of cramping or constrictive crushing
stresses to the thin glass receptacle by the prying
leverage of the opener in the closure removing
operation. Particularly in the case of packages
‘ which, after sealing, have been subjected to cock
ing or heat sterilization, the bond between the
gasket and the rim of the receptacle may be very
strong, due to the vulcanizing of the gasket ma 15
terial to the glass. Deep intrusion of the recep
tacle mouth rim into .the gasket also contributes
to the tenaciousness of the bond. Under such
circumstances, the bond may be so strong that‘ '
the lower portion of the closure skirt will be 20
drawn quite‘ considerably out of its circular form
by the prying force of the opener, before the bond .
closure even though they are considerably out of.
alignment. Fig. 1 serves to show how the bead
I2 will serve to guide the closure onto the mouth
of the receptacle, even though the margin of
the skirt may not be clear of the head I! at all
‘points. This is of distinct advantage in facili
tating the application of the closures while the
receptacles‘ are in progressive movement. Fig. 5
serves, to illustrate the cooperation of- the parts
incident to the application of the closure in an
apparatus of the sort illustrated in 'my U. S. Pat
ent No. 1,920,539. The closures are fed in a
series down an inclined chute marked C while
the receptacles are moved progressively in a se
ries in such fashion that the successive recepta
cles meet the successive closures at the lower end
of the chute and withdraw them therefrom inci
dent to the further progressive movement of the
receptacles. In such an operation it is necessary -
is broken. In the use of closure caps of prior con- ‘
to have a suitable engagement of the closure by
structions on thin glass receptacles it has been
found that this distortion of the shell skirt has
the upper portion of the receptacle to insure that .
the closure will be positively withdrawn from the
chute, but at the same time it is important to
hold the gasket entirely out of contact with the
receptacle until the closure reaches an approxi
been sumcient in some instances to cause the
breaking of the thin receptacle.‘ By the present
construction, such breakage is effectively pre
vented. The form and relationship of the bead
12 on the receptacle and the skirt portion ll of‘
mately- horizontal position over the receptacle. .
In Fig. 5 it'is seen how the bead l2 overhangs
the lower portion of the skirt at the point of
the closure shell are such that the skirt I‘! is
spaced a substantial distance away ‘from the wall
of the receptacle when the closure is in sealed
> contact and thereby e?ects a very secure engage
position on the receptacle, even though the clo
sure is at a position of maximum eccentricity rel
ative to the receptacle illustrated in Fig. 3. Thus
there is provided between the skirt portion I1 and
ment which will :insure that the closure is posi
tively withdrawn from the chute, even though the
point of engagement between the bead and the
closure skirt is adjacent the lower margin of the
latter so that the gasket I8 is spaced a substan
the wall of the receptacle a clearance which, at
tial1 distance above the mouth rim of the recep
tac e.
its minimum, is as wide as the bead I2 is thick
radially, which clearance allows for maximum in 40
Accordingly, it is to be observed that by virtue
ward de?ection of the skirt margin under the
of the cooperative character and arrangement of
opening pressure. Furthermore, the bead l2 it
the parts, my improved package greatly facili
self interposes a limiting effect upon the inward '
de?ection of the skirt, as when the skirt comes‘
into engagement withit the inwardly de?ectable
portion of the skirt is shortened to, that part
which is below the point of contact with-the
important safeguards against injury, increases the 45
security and reliability of the airtight seal, fa
cilitates its opening, and safeguards the frangible
receptacle against breakage incident to the ap
plication of upward prying pressure to the closure
skirt for the purpose of removing the closure.
bead. As a consequence, the depending skirt of
the shell is not permitted to reach the wall sur
face of the receptacle and exert crushing stresses
upon it before the closure is freed from the re
ceptacle by the liting force from the opener.
Thus the thin glass vessel is safeguarded against
fracture from that'sort of an occurrence in the
opening of the package.
tates the packing and sealing operations, ail’ords
What I claim is: ,
u 1. In a vacuum seal package comprising a fran
gible receptacle having an annular wall portion
with an annular mouth rim having a peripheral
bead encompassing it and projecting outwardly
from the mouth rim and wall portion, a closure
The peripheral skirt beading IS, in addition to
affording space for lateral displacement of the
adapted for retention on the receptacle by at
mospheric pressure alone, said closure comprising
gasket material as above mentioned, affords an A
a shell having a top portion for covering the re
important fender or protection for the glass ves
ceptacle mouth and an annular skirt depending
sel against impacts such as might result from 60 from said top portion, a, gasket of plastic sealing
lateral impingement of one package against an- material secured to the underside of the top por
other or the falling over of a package on a con
tion and adapted to form a seal upon the annu
veyor or the like. Moreover, the beading It has
lar mouth rim of the receptacle, the ‘upper por
a de?nite ‘s-ti?ening and shape-maintaining ef-‘ ‘
fect upon both the top portion l5 and the skirt
portion l1, as it resists the bending of the top
portion l5'out of its normal plane and also resists
tion of said skirt being formed as a circumfer
65 ential beading extending outwardly beyond the 1
. the ?exing of the skirt portion l1 out of its nor
mal circular contour by prying pressure such as
is customarily applied to those parts byan opener
in the operation of lifting the closure from the re
ceptacle to break the hermetic seal.
The construction affords additional advantages
in the operation of applying the ‘closure to the
receptacle. For example, if the closure is applied 75
‘portion of the skirt therebelow, the portion of the
skirt which is below said beading being de?ected
abruptly therefrom and being of approximately
cylindrical form and of circumferential size and
depth to swing freely clear of the mouth rim on
one side of the receptacle while the gasket is in
contact with the mouth rim on the opposite side, -
the depth of the skirt beading and thickness of
the gasket being such that when the gasket is
resting on the mouth “rim of the receptacle in
2,412,704, "
position for sealing thereon, the head or the lat
ter will be within said lower portion oi! the skirt
in position to space the skirt entirely away from
the ‘annular wall portion of the receptacle below
the bead when the closure is moved downwardly
* to sealed position on thereceptacle.
2, In a vacuumseal package which includes a
frangible receptacle having an annular mouth rim
and an annular wall portion therebelow'and an *
- annular peripheral bead projecting outwardly
bead when the closure is moved downwardly to
‘ sealed position on the mouth rim.
3. A vacuum seal package comprising a recep
tacle having an‘ annular wall portion with an
annular mouth rim and an annular peripheral
bead encompassing the mouth rim and project
ing outwardly from said wall portion, and a clo
sure adapted for retention on the receptacle by
atmospheric pressure alone, said closure comprise
ing a shell having a top portion for covering the
from said wall portion adjacent the rim, a clo
sure adapted for retention on the receptacle by
atmospheric pressure alone. said closure com
receptacle mouth and a depending annular skirt,
a gasket 01 plastic sealing material secured to
the underside of the top portion and disposed to
prising a shell having a top portion for cover
' form an air-tight seal upon the annular mouth
ing the receptacle mouth and an annular skirt 15 rim, the upper portion of the skirt being formed
as an outwardly projecting annular heading and
depending from said top portion, a gasket of
the lower portion of the skirt being of approxi
plastic sealing material secured to the underside
mately cylindrical form and being or circumfer
of the top portion adjacent the skirt and of size
ential size and depth to be swung freely into and
to form an air-tight seal upon the annular mouth
rim of the receptacle, the upper portion of the 20 out of encompassing relationship with the bead
on one side of the receptacle while the gasket
skirt for a depth approximating the thickness of
is in contact with the mouth rim at the diamet»
the gasket being formed as a circumferential sti?
ening beading extending outwardly beyond the 'rically opposite location, the thickness of the gas
ket being such that when it is resting on the
portion’ of the skirt therebelow, the portion of
the skirt below the beading being of circumfer 25 mouth rim of the receptacle preliminary to seal- ,
ing, ,the peripheral bead of the latter will be with
ential size and depth to admit entry of the mouth
in said lower portion or the skirt, said peripheral
rim freely into'contact with the gasket when
bead being of su?lcient width in the radial direc
the closure top is in canted relationship to the
tion tokeep the skirt entirely spaced away from
receptacle, said lower portion of the skirt de
pending approximately perpendicularly fromv the 30 all portions or the receptacle wall below the pe
rimeter of said bead when theclosure is in sea]
plane of the top portion for cooperation with
ing engagement with the receptacle.‘
' the peripheryof the receptacle bead to insure a
predetermined minimum radial clearance between
the skirt and the wall of-the receptacle below the
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