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Патент USA US2110643

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March 8, ÈÉ.
Y»
F, J, T, BARNES y
CLOSURE FOR LLIQU’ID CONTAINERS
2,110,643
Filed June 22, 1955
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`March 8, 193%.
F. J. T. BARNES
CLOSURE FOR LIQUID CONTAINERS
Filed June 22, 1955
2 Sheets-Sheet 2
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Patented Mar. 8, 1938
2,110,643
UNITED STATES PATENT OFFICE
2,110,643
CLOSURE FOR LIQUID CONTAINERS
Frederick John Trevallon Barnes, Brisbane,
Queensland, Australia
Application June 22, 1935, Serial No. 27,987
In Great Britain December 14, 1933
9 Claims. (Cl. 217-110)
This invention relates to means for use in iill
ing or emptying liquid containers or for auto
matically sealing them under pressure and re
sealing them under pressure, or for sterilizing
o., containers, and an object of the invention is to
provide an arrangement which may be employed
for any of these purposes.
According to the present invention a Valve for
closing a bushing in a liquid container comprises
a head to engage the inner end of the bushing
and thereby seal it and a projection or projections
from the head to engage the bushing whereby
the valve may be supported by the bushing, and
to engage the end of a stem inserted through
the bushing (for example, the stem of an ex
tractor), whereby the valve may be supported
by the stem. The purpose of this arrangement
is that when the stem is passed through the
bushing and down into the container the valve
20 is removed from its seat but remains supported
on the stem.
When the stem is withdrawn
through the bushing, the valve is returned to its
position in engagement with the bushing.
According to this invention also, in or for a
container for liquids, there is provided an extrac
tor comprising, in combination, a unit compris
ing two tubes one inside the other to` provide a
.conduit between them, the outer tube having two
apertures, one adapted to communicate with the
30 inside of the container and the other with the
C:
outside thereof, a closure for said conduit at the
inner end of the said unit, a removable valve
member for closing the inner end of a. bushing
secured within the bung-hole of the container,
means on the said unit for engaging andre
moving the valve member when the unit is in
serted through the bushing, and means for again
securing the valve member against the bushing,
upon withdrawal of the unit.
’I‘he projection or projections aforesaid may be
40
resilient to engage recesses in the inner wall of
the bushing and in the end of the stem. Alter
natively, the projection aforesaid from the head
of the valve may be a tubular portion externally
screw-threaded to engage screw-threads in the
bushing and internally screw-threaded to engage
screw-threads on the stem.
'
Other features of the invention will appear
hereinafter.
Specific embodiments of the present inven
tion will now be described, by way of example,
with reference to the accompanying drawings,
in which:-Figure 1 is a sectional elevation of one form of
55 extractor according to the invention.
Figure 2 is a view of the extractor stem and
valve member in a diiferent position.
Figures 3 and 4 are a sectional elevation and a
sectional plan respectively of an alternative form
of valve member according to the invention, 5
Figure 4 being a section on the line 4-4 of
Figure 3.
Figures 5 and 6 are an elevation and plan
respectively of yet another form of the invention,
Figure 6 being a section on the line 6-6 of
Figure 5, whilst
Figures ’7, 8, and 9 are views of further modi
iied forms of the invention.
Figure 10 shows a valve applied to a modified
form of extractor.
v
As shown in Figures 1 and 2, a metal bush I0
is fitted to the bung-hole of a liquid container,
such as a beer barrel, by a surrounding bushing
I i having a packing ring I2 and a screw-threaded
annulus I3. The extractor comprises two nut
members I4, I5 each having grip portions I6.
The nut I4 is screw-threaded on to the bush Iß
and a sleeve I'I of resilient material makes a
fluid-tight joint between a collar I8 on the nut
I4 and the top annular surface of the bush I9.
The nut I5 is screwed into the nut I4 and engages
a rubber packing ring I9.
The extractor stem comprises two concentric
tubes 20, 2l, one inside the other and the con
duit between these tubes is closed at the bottom 30
by an annular plug 22.
At the top of the stem the tubes engage an
elbow 23 and a hole 24 in the wall of the outer
tube 20 communicates with a laterally-extending
bore 25 whilst the inner tube 2| is received in D; Ll,
the vertical limb 26 of the elbow. A port 39 is
formed in the outer tube 20 at a point high up
in the stem when the stem is in position within
the container.
A valve for closing the bushing comprises a
steel frusto-conical disc 41 having riveted there
to a series of upstanding prongs or tongues 59
formed with curved heads 54 to engage a groove
55 cut in the stem near its lower end. A rubber
extension 49 is formed With an inwardly~directed ’
ñange 65 which engages a groove in the lower
end o-f the bush and a screw-threaded collar 65
engages the outer wall of the rubber extension
at the region of the flange 65 and may be screwed
down to lock the rubber in position on the bush.
It will be seen that the disc-portion 4l of the
valve seats in a V-shaped groove in the bore of
the rubber and that the bore is flared outwardly
beyond this point.
The extractor is fitted to a container as fol
55
2,110,643
2
lows.
The stem is passed through the nut I4
until the tapering inner end 39 of the stem passes
between the curved ends 54 oi the tongues 50
and wedges them apart. Downward movement
of the valve is so far prevented by the engagement
of the disc 41 with the groove in the rubber 49.
When the stem has been moved down into the
position shown in Figure l, the curved ends 54
tion 46 of the bush to allow it to pass back into
the position shown in Figure 5.
An alternative form of valve is shown in Fig
ure 7. In this construction the head 41 of the
valve takes the form of a metal disc of stainless
steel having its lower face slightly larger than
its upper face as' shown. The metal disc is adapt
spring into engagement with the groove 55 in the
10 stem and further downward movement oi the
stem causes the disc 41 to expand the rubber 49
and pass: downwardly out oi the groove. The
stem is passed down, with the valve supported
on it, as shown in Figure 2, until the bottom of
15 the stem is near the bottom of the container. A
ed to engage with a V-shaped groove 48 in the
inner wall of a tubular rubber portion 49 en
10
gaging a groove in the bush le.
The head 41 of the valve is formed with a
plurality of upstanding tongues 50 adapted to en
gage a peripheral groove in the stem 5l of an
extractor.
In this construction, when the stem 5l is in 15
fluid-tight seal between the extractor body and
the stem is now obtained by tightening the nut
l5 with respect to the nut i4, whereby the pack
ing ring I9 is distorted to expand it in a radial
20 direction. An alternative form of seal is de
scribed later with reference to Figure l0.
The extractor is used for steriliaing and filling
serted through the bushing iû, its lower end
separatesthe tongues 5i! until they spring into
the groove in the stem as shown in Figure '1.
Further downward pressure on the stem causes
the container in a manner described later.
In the alternative construction shown in Figu
25 ures S and 4 the valve comprises a ñanged head
the head 41 of the valve to spread the rubber por 20
tion outwardly and to pass down into the con
tainer. The valve is retained on the stem 5I by
engagement of the tongues 5t with the groove.
When the stem is withdrawn the conical wall of
the head 41 engages the outwardly flared por 25
tion 52 of the rubber portion 49 and thereby
21 and a packing ring Si. Formed integrally
with the flanged head is a series of upstanding
tongues 32 and 33 or” springy metal. The tongues
32 (see Figure 4) spring inwardly to engage a
recess' 35 in the lower end of the stem 2li; the
alternate tongues 33 are sprung outwardly so
that they engage a shouldered recess 35 in the
internal surface of the bush iii.
It will be seen that the upper' end of each
35 metal tongue is formed with a barbed enlarge
ment 31 and that the bore of the bush 10 is
slightly flared outwardly at 323, for reasons ex
plained below.
When the stem 2Q is passed down through the
40 bush into engagement with the valve, the lower
end 39 ci the stem, which is tapered, as shown,
forces the tongues 32 outwardly by a wedging
action until the stem reaches the position shown
in Figure 3 at which these four tongues spring
inwardly over the enlargement 4Q to engage the
recess 35. Further downward movement of the
stem 2li causes- the remaining tongues 33 to be
wedged inwardly by the action of the shoulder
50 36 in the bush, so that the stem with the eight
tongues engaged in the groove 35, forces the valve
out of the bush. When the tongues 3‘5 are clear
of the bush they spring outwardly but the valve
is retained on the stem by the remaining
tongues 32.
Upon withdrawal of the stem the outwardly
sprung tongues 33 enter the iiared portion 38 of
the bush and are forced inwardly by a wedging
action so that the tongues pass up through the
60 bush and the valve resumes the position shown
in Figure 3.
In the alternative construction shown in Fig
ures 5 and 6 the valve 4l is of rubber comprising
a head portion and an upstanding tubular wall
65 4i. The wall 42 is formed with a rib 43 which
engages on the inside with a groove 44 in the stem
2B and on the outside with a shoulder 45 in the
bush id. This valve operates in the same way as
that described with reference to Figures 3 and 4
except that, instead oi deflection of metal tongues,
the rubber of the valve is deformed to permit
it to pass out of the bush on the downward
movement of the stem; on withdrawal of the
75 stem the rib 43 is compressed by the flared por«
expands the rubber, permitting the metal head
41 to pass back into the position shown in Fig
ure ’7.
In the modified arrangement shown in Figure
8, the valve member comprises metal tongues 5D,
as already described with reference to Figure 1.
30
These tongues are riveted to a thick disc-shaped
base 80 having a sharp upstanding edge 8! to
engage a rubber ring 82 on the bottom of the
bush.
In the construction of Figure 9, the bush lil
has a rubber portion S9 acting as the valve seat
accommodated in an enlargement at the bottom 40
of the bush and the rubber 5S is retained in the
bush by a shouldered nut 1li screw-threaded on
to the bush. In order to accommodate the de
formation oí the rubber which takes place when
the metal valve head 41 is being forced out of 45
or into the rubber, the enlarged portion of the
bush bore is formed with a peripheral recess 1I
into which the rubber 69 can «expand when de
formed.
When the stem is in position within the con
50
tainer, as shown in Figure 2, the container may
be sterilized by forcing a detergent liquid along
the pipe 25 from whence it ilows out through the
port 36, in through the holes 2S in the valve and
exhausts through the inner tube 2i. For ex
ample, superheated steam may be used, followed
by carbon-dioxide or other suitable gas.
The container may be iilled with liquid by con
necting the vertical limb 26 of the elbow to a
source of liquid supply. The liquid flows down 60
the tube 2l and through the ports 2&3 in the
valve; meanwhile the air or gas in the container
escapes through the port Bil passes up the con
duit formed by the space between'the two tubes
and exhausts through the port 24 into the pipe 65
25. When liquid is to be drawn oíf from the con
tainer either the form of extractor' shown in
Figure l may be used or that shown in Figure l0,
which will now be described.
Figure 10 shows a valve according to the in
vention in conjunction with an extractor, the
features of which are more fully described and are
claimed in my copending application Serial No.
757,584, ñled 14th December 1934. This extrac
tor comprises a lever 90 (Figure l0) rotatable
about trunnions 9i and having a cam or cams 92
2,110,643
whereby -the rubber ring between the extractor
body and the stem may be distorted to make the
seal.
'
The metal blush lil, in this construction, has a
packing ring 5€? of resilient material, such as rub
ber and canvas, surrounding it, and a nut 6l and
Washer E2 í‘or applying pressure to the ring t5.
The nut ill has a castellated or slotted extension
63 for engagement by a'teol. A rubber'extension
Et engages the lower
or” the
inwardly-directed flange
means on said Valve member having radially in
ripheral groove on the outside or“ a draw 01T stem
inserted
in the construc
having a depending tapering portion 6l to
engage the outer surface oi the rubber til. By
screwing down the nut
the rubber portion @d
may be locked securely in position on the bush.
said bushing.
bung hol-e iitting for liquid containers>
ar bushing ier the bung hole,
‘ve member normally closing'said bush
ing but
plaeeable out of said bushing by a
draw
s er "e" v“ted
e ‘ riding res
-
'
d parts for
stem may be forni ed with radial holes @5 as shown
d. In order that there
g,
spring fingers on said
havi ng radially inwardly project
(D in a peripheral
f
' ie outside of a draw off stern inserted
. said bushing.
'
hole htting for liquid containers
bushing for the bung hole, a disc
shall be no risk of the met l tongues of the valve
becoming engaged with „ese holes, theV stern is
preferably formed with a peripheral groove with
a gradual expansion to the main part of the stem;
Ul
'ing said bush
in a position
l To prot-’ide a passage between the head oi the
in Figures 3, 5, 7.,
said bushing, axially
nt oatoli means having radially
The
readyremainder
described o?‘
with
thereference
valve is similar
to Figures
to that
l and 2.
valve and the end of the stern, the end of the
Ul
wardly directed parts adapted to engage in a pe
iii by an
tion of Figure '.7; coopera ing with this flange is a
nut
3
extending resilient catch means having radially
outwardly directed parts for engagement with
the bushing, and holding said valve member in
a position closing said bushing, and spring catch
forming an
d bushing, a rubber sleeve
Vfusion or" said bushing and having
an interr
cove to receive the edge of said '
thus,
¿he stem is passed into the valve, the valve ane”
nt holding means on said Valve
metal tongues, il’ they engage the holes, are dis
member for gripping a draw ofi stem inserted in
engaged by further movement oi the stem. How t said
bushing.
.
~
ever, the preferred arrangement is shown in
5.
lA
bung
hole
iitting
.for
liquid
containers
Figures l, 2, 9,
lí) in which there are no radial
holes in the end ofV ‘ie
‘out
stem is open ` comprising a bushing for the bung hole, '_a disc»
valve having a bevelled upper edge for closing
at its »lower end „ad spaced a short distance
said
bushing, a rubber sleeve forming an exten-`
away from the head portion or the valve so as to '
„o CA leave a space ile,
shown Figure l. The metal {sìon of said bushing and having an internal V
tcnguesare an accurate lit where they engage the groove to receive the edge of said valve, and
stem so lthat there is no risk of the space @il being f resilient holding means on said Valve member
for gripping a draw off stem inserted in said
closed up during operation of the extractor. The bushing.
space et may be made of such size as to act as a
strainer.
I claim:-
.
7. A bung hole fitting for liquid containers
comprising a bushing for‘the bung hole,.a disc
valve for closing said bushing, an annular re-V i
cess within the bore of said bushing towards its
inner end, a rubber sleeve on theV upper surface
a dise valve member normally 'closing said bush
45 ing but displaceable o-ut Yoi said bushing'by a' Vor“ said valve having an external rib to engage
draw off stem inserted in said bushing, resilient in said'recess'to hold said valve member in a
1. A bung hole ñtting for _liquid containers
comprising a tubular bushing for the bung hole,
means for holdingsaid Valve vmember' in a posi
tion closing said bushing, and axially extending
resilient holding means onl said valve member
adapted to encircle a draw-off stem inserted in
said bushing, said holding means having one or
more detent portions projecting radially inwardly
therefrom, which engage with a peripheral groove
on the draw-off stem.
2. A bung hole fitting for liquid containers
comprising a tubular bushing for the bung hole,
a disc Valve member normally closing said bush
ing, an annular recess ’within the bore of said
bushing towards its inner end,‘axially extending
60 resilient means on said Valve ’ member having
radially outwardlyfdirected parts for engaging
in said recess to hold said valve member in a.
position closing said bushing, and resilient catch
- means on said valve member having radially in
wardly directed parts for engagement with a pe
’ieral groove on the outside of a draw-off stem
‘
'ed in
bushing.
'
3. ¿t bung hole :dtting for liquid containers
comprising a tubular bushing for the bung hole,
70 a disc valve member normally closing said bush
ingbut displaeeable out of .said bushing by a
draw 01T stem inserted in said bushing, axially
position closing said bushing, and resilient hold
ing means on said valve member for gripping a
draw oil.’ stem inserted in said bushing.
`
8. A bung holeV fitting for liquid containers
comprising a bushing for the bung hole, adisc 50
valve for closing said bushing, an annular-recess
within the bore of said bushing towards its inner
end, a rubber sleeve on the upper surface of said
valve having an external rib to engage in said
recess toV hold said valve member in a position
closing said bushing, and an external rib on saidj
sleeve to engage in a peripheral recess on a drawA
off stem inserted in said bushing.
9. A bung hole ñtting for liquid containers
comprising a bushing for the bung hole, a valve
member normally closing 'said bushing,
et'
nular recess within the bore of said bushing to
wards its inner end, two sets of spring lingers
on said valve member, inwardly projecting parts
» on the ends of one
set of ñngers adapted to ene
gage in a peripheral recess on a draw 01T stem
65
inserted in said bushing, and outwardly project
ing parts on the ends of the other set of spring
fingers adapted to engage in the annular recess
in the bore of the bushing.
n »
‘FREDERICK JOHN VTREVALLON BARNES.
70
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