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Патент USA US2132598

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Oct. 11, 1938.
'
L. J. BARTON
VENTED STOPPER
2,132,598
_
Filed March 7, 1956
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INVENTOR.
LARRY J. BARTON
- BY M
-
ATTORNEY.
Patented Oct. 11, 1938
_ 2,132,598
‘‘
UNITED STATES PATENT‘
2,132,598
VENTED STOPPER
Larry J. Barton, Oakland,’ Calif., assignor to
'Clorox Chemical 00., Oakland, Calif., a corporation of Delaware
Application'March ‘7, 1936, Serial No. 67,678
OFFICE’ ‘
7
.5 Claims. (01. 215-56)‘ .
My invention relates to a vented stopper, and
My invention is designed to overcome the above
more particularly to a stopper adapted for con
tainers such as carboys and jugs 'for various
described di?‘iculties, and has as one of its objects
the provision of an improved stopper of the char
chemicals, such as hypochlorite solutions, which
acter related, which has vent means therein a14
5 have the characteristic of slowly evolving a gas.
vIn the handling of such chemicals, it is neces
lowing gas to escape with absolute certainty, and 5
in such manner that there is no chance of
sary to provide venting means in the container
stopper to allow the escape of gas which is slow
ly given o? by the substance in the container.
The provision of, a vent ori?ce in ‘the stopper
plugging or cementation of the vent means. I
Another object of the invention resides in the
provision of ,a stopper, of the character related, ,,
which is of strong and economical construction.
Other objects of the invention will become ap
parent from a‘ perusal of the following descrip
o?ers a problem, particularly with’ respect to
liquid solutions containing salts such as occur in
hypochlorite
solutions. ‘This
is . so
because
tion thereof.
plugging or blocking of the vent ori?ce frequently
occurs when some of the solution splashes on the
"it
'
In general, the vented stopper of my invention
includes a stopper body portion of comparatively Yrs
stopper, leaving, after evaporation, anaccumula
’ tion of salt residue which plugs the vent ori?ce.
Heretofore, stoppers have been made of yield- able, compressible or elastic ,material, such as
soft and compressible material, such as soft rub
her, and a relatively hard and rigid insert therein,
preferably of hard rubber. Instead of providing
a single vent ori?ce through the interior'of the
20 soft rubber, which ‘when inserted into the mouth
insert, as has heretofore been employed, an ori 20
of a jug, carboy or similar container, will e?ec
?ce is formed between the outer surface of the
tively seal the mouth and thereby prevent the , insert and the inner surface of the'stopper body,
escape ‘of the chemical solution in the container. by having the con?guration of the insert differ
The provision of a vent ori?ce through the rela
ent from that of the body aperture for the insert.
25 tively soft yieldable stopper is not satisfactory,
Preferably, more than one of such ori?ces is pro
because when the stopper is pressed into the vided, to insure adequate venting. The end of
mouth of the container, to seal tightly the mouth, the insert and the end of the stopper body fac
the pressure causes compression of the stopper
ing the container, are so related with reference
with consequent closing of the vent ori?ce. To to
each other as to provide means whereby ma
overcome this dii?culty, it has been the practice to terial splashing against the stopper can drain
provide the stopper body with an insert of com
away before it reaches the'vent ori?ce, thereby
paratively hard and rigid material such as wood, protecting the container end of the vent ori?ce
hard plastic material, glass, porcelain, or hard and'avoiding plugging of the ori?ce.
rubber. A single vent ori?ce has been provided
Reference will now be made to the drawing
35 through the interior of the insert. Hence, when
for a more detailed description of the invention.
vthe stopper proper is inserted into the mouth of I
the container, the pressure transmitted, there
through will not cause distortion of the relatively
hard insert, and its vent ori?ce will not become
40 closed.
Although the single vent ori?ce in the interior
of the described relatively hard insert will not
becomeclosed by virtue of distortion created by
pressure, salt deposits which accumulate therein,
jcaused either by material being carried through
the vent ori?ce as'gas evolves or ‘by splashing of
material against the ‘insert, gradually plug up the
ori?ce.
It is impractical to form more than one
‘ori?ce through the interior of the insert to pro
50 vide ‘for adequate escape of gas in case one ori
?cebecomes clogged, because the insert is ‘neces
sarily limited in size in order not to interfere
with the compressibility of the stopper body, and
because of the cost involved in iorming'more than
one interior ori?ce.
Figure 1 is a transverse vertical sectional view
through‘ one form of stopper of my invention; the
section being indicated by line |—l in Fig. 2.
Figure 2 is a horizontal section taken in a plane
indicated by the line 2-2 in Fig. 1.
40
Figure 3 is a vertical sectional view through
another form of stopper; the section being indi
cated by line 3-—3 in Fig. 4.
,
Figure 4 is a horizontal section taken in a plane
indicated by the line 4-—4 in Fig. 3.
Figure 5 is a vertical sectional view of another
embodiment of the invention; the section being
indicated by line 5--5 in Fig. 6.
Figure 6 is a horizontal section taken inthe
plane indicated by the line 6—6 in Fig- 5.‘
‘Figure ‘7 illustrates still a further embodiment
of the invention, in vertical section indicated by
line 1-’! Fig. 8.
'
-
Figure 8 is ahorizontal section taken in the
plane indicated by the line 8-8 in Fig. 7.
2,182,598
In the modi?cation illust ated by Fig. 5, it will
be noted that both the top of the stopper body I
and the top of the insert 3 are relatively flush.
However, the drainage and shielding effect for
protecting the .container ends 6' of the vent ori
?ces 6 against plugging, is provided for by a
With reference to Figs. 1 and 2, this form of
stopper comprises a stopper proper or body I of
comparatively soft, compressible material, such
as soft rubber, or cork. The body I is formed
with an aperture 2 leading from the outer to the
container end I’ thereof, and adapted to receive
and grip tightly therein the hard and rigid, elon
flared concavity or cup-shaped recess 9 in the
container end I’ of thestopper body I and adja
gated insert 3, preferably'of hard rubber, or any
cent the container end 3’ of insert 3, the stopper
other hard material such as glass or'hard plastic
having a skirt to provide the recess '9. This
enables the container end 3’ of the insert to
10 material. The insert preferably extends beyond
the container end of body I, and thereby provides
protecting means against which splashing liquid
extend beyond the container ends 6’ of the vent
ori?ces 6 to protect the ori?ces against splashing
can impinge, for a purpose to be subsequently ex
liquids.
plained. The con?guration of the insert is dif
Fig. 7 illustrates a further embodiment of the
invention, in which the top is rounded similar to
the Fig. 3 modi?cation and for the same purpose.
The container end 3' of the insert 3_ is consider
ably above the container end I’ of the body I of
the stopper; and such body is provided with a
flared recess 9 adjacent the container end of the
insert. As a result, ample drainage is provided to
15 ferent from that of aperture 2, by being provided
with ?utes or grooves 4 in the outside thereof,
which, when the insert is placed in the body of
the stopper, form a plurality of vent ori?ces 6
between the insert‘ and the body I. vIt is desir
20 able that these grooves 4 be comparatively nar
row and deep; so that when the soft material of
the body I is compressed as the stopper is in
preclude the plugging action previously referred
serted into the mouth of a container, such mate
rial will not enter, and thereby close the vent
25 ori?ces.
Since the container end 3' of the insert pro
jects beyond the container end I’ of the body I
of the stopper, it extends also beyond the con
tainer ends 6’ of ori?ces 6. Hence, plugging of
3.0 the vent ori?ces is avoided, because the container
end 3' of the insert, preferably pointed, acts as
a means for shielding or protecting the container
to.
splashing liquid. By the provision of the plu
rality of the ori?ces, adequate venting is provided;
by providing the grooves 4 in the outer surface
of the insert, as is illustrated in Fig. 2, the same
effect may be produced by making the insert'tri
angular in shape as is illustrated by Fig. 4, or by
45
forming the aperture in the body of the stopper
triangular in shape and the insert circular in
shape, as shown by Fig. 6. The aperture in the
stopper body for the insert, need not be circular
in cross section, even if the vent ori?ces are
formed by grooves in the outer surface of the in
sert, as is illustrated in Fig. 8. It is to be under
stood, therefore, that the stopper of my inven
tion, may have its vent ori?ces formed as shown
in Fig. 2, or in any other of the ways mentioned.
It is only necessary that the cross sectional shape
of the insert be diiferent from that of the aper
ture in the body portion for the insert, and that
the insert ?t tightly in such aperure.
In the modi?cation illustrated by Figs. 3 and
4, the same reference characters have been ap
plied to indicate the parts corresponding to the
parts illustrated in Figs. 1 and 2. For certain
types of chemicals having high concentration of
salts, such as concentrated hypochlorite solutions,
back drainage provided for by the recess 1 in
Fig. 1, might cause plugging of the vent ori?ces.
To overcome this, the top of the stopper adjacent
the insert, in the Fig. 3 modi?cation, is formed
As
a result, any material which might escape through
the vent ori?ces, caused primarily by being car
ried therethrough due to the evolution of gas,
can drain away from the ori?ces to- the'outside
75 of the stopper, thereby minimizing plugging.
.
ranged with respect to each other as to provide
means for protection of the vent ori?ces, against
ends 6' of the ori?ces against splashing liquid
with a protuberance 8, preferably rounded.
r
the container end of the stopper body are so ar
which can readily drain away before reaching the
ori?ces. Inasmuch as the grooves 4 are on the
outside of the insert, they may be readily formed
therein. A cup or recess 1 is formed in the top
of the stopper to allow for back drainage of ma
terial carried out by evolving gas and which con
on top of the stopper.
40 denses
Although the vent ori?ces are preferably formed
50
I
The recesses 9, in the modi?cations of Figures
5 and '7, are preferably but not necessarily ?ared.
In all embodiments of the invention, it will be
observed that the container end of the insert and
and at the same time, even should one ori?ce
happen to become plugged by virtue of salt residue
35
resulting from evaporation of splashed mate
rial, the remaining unplugged ori?ces will pro
vide proper venting.
I
The stopper to which the invention relates is
generally employed for sealing containers such 4.0
as large carboys or jugs adapted to hold large
quantities of material. Since such containers are
always handled upright because of their size and
because one usually recognizes from the nature
of the container the fact that it contains mate
rial of the character related, handlers will not
usually turn over the container and there will
consequently be no escape of the chemicals
through the vent ori?ces. The vent ori?ces are
of comparatively small size. Hence, foreign mate 50
rial can enter the container only with difficulty,
and the container will be substantially completely
sealed.
While this invention has been described with
reference to containers for sodium hypochlorite 55
solutions, it will of course be understood that it is
applicable'to containers for any liquid that re—
quires venting and that tends to form an incrus
tation or deposit.
60
I claim:
1. A stopper of compressible material having
an opening therethrough, an insert ?xed in posi
tion in said opening, the contour of said insert
being such as to form with the wall of the
opening throughout the length of the latter a (it
plurality of passages for permanently venting
the stopper, said passagesv being unobstructed
from the outside of the stopper to the bottle side
thereof, the insert being of substantially uniform
cross sectional shape throughout its engagement
with the stopper and having its bottle end taper
ing, said tapering end continuously decreasing in
cross section toward the bottle end of the insert,
said passages opening into said tapered end, and
said tapered end extending below the lowermost
2,132,598
point of engagement of said insert and said
stopper.
2. A stopper as de?ned in claim 1, in which
the bottle end of the stopper is provided with a
skirt portion, ‘the interior face of said skirt form
ing a downwardly and outwardly ?aring recess.
3. A stopper as de?ned in claim 1, provided at
the top with a protuberance the sides of which
3
tion in said opening, the contour of said insert
being such as to form with the wall of the opening
throughout the length of the latter, one or more
passages for permanently venting the stopper,
said passages being unobstructed from the outside CI
of the stopper to the bottle side thereof, the
insert being of substantially uniform cross sec
flare outwardly and downwardly to the circum
tional shape throughout its engagement with the
stopper and having its bottle end tapering, said
upper end of the passages liquid emerging there
tapering end continuously decreasing in cross sec
tion'toward the bottle end of the insert, said pas
sage or passages opening into said tapered end,
and said tapered end extending below the lower
most point of engagement of said insert and said
10 ference of the stopper to de?ect away from the
through.
4. A stopper as de?ned in claim 1, wherein the
top of the stopper is provided with recess bounded
15 by sloping sides.
5. A stopper of compressible material having
an opening therethrough, an insert ?xed in posi
stopper.
LARRY J. BARTON.
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