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Патент USA US2111040

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March 15, 1938.
2,111,041)
H. C. ALLEN
LIQUID DISPENSER
5 Sheets-Sheet l
Filed April 20, 1936
BY /
Mm
March 15, 1938.
H. `C ALLEN l
-
2,111,040
LIQUID DISPENSER
Filed April 2o, 193e
5 sheets-sheet 2 `
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30
77
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lo
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/NVENTOR
Hom/ARD C. ,4L/_EN
ATTORNEY
March 15, 193.8o
H. c. ALLEN
2,111,040
LIQUID DISPENSER
Filed April 2O» 1935
5 Sheets-Sheet 3
45
46M.
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JNVE/VTOR
HowARa C. ALLEN
BY W
ATTORNEY
2,lll,04@
Patented Mar. 15, 1938
UNITED sTATEs
PATENT OFFiCE
2,111,040
LIQUID DISPENSER
Howard Charles Allen, Vancouver, British Co
lumbia, Canada
Application April 20, 1936, Serial No. 75,311
l2 Claims.
My invention relates to improvements in liquid
dispensers which are particularly adapted for
use in serving beer and other carbonated foam
ing drinks. The objects of the invention are to
5 provide a machine capable of filling drinking
glasses as fast as the average operator can handle
them; to provide means whereby refrigeration
of the dispenser is unnecessary even during slack
periods when the draw off is taken at lengthy in
10 tervals, by draining the liquid back to the barrel
in the cold room; to provide means for complete
washing out of the dispenser when desired, and
to provide automatic means for maintaining a
predetermined gas pressure upon the liquid in the
15 dispenser when not discharging.
The invention consists essentially of a reserve
Stand pipes I8 and H3A extend downwards from
above the maximum liquid level of the feed tank
ë to ports I9 and ISA and spring closed foam
valves 29 and 28A are coupled with the valves Il
and ITA and are interposed between the cham
bers I2 and I2A and ports I9 and ISA. The
valves il and 2@ and the Valves I'IA and 23A are
alternately opened by forks 2! and 2| A mounted
upon the rock shaft Il?. Spring closed discharge
valves 22 and 22A communicate between the
chambers I2 and IEA respectively and a ported
passage 23 which leads to a discharge spout 24.
Spring closed relief valves 25 and 25A communi
cate between the chambers I 2 and IZA and the
atmosphere and are adapted to be thrust open 15
by the valves 22 and 22A respectively almost im
a predetermined pressure in the tank and the
mediately after these latter valves have been
raised to open by fingers 26 and 26A extending
measuring vessel, and means for transferring liq
from the rock shaft I0.
tank, a measuring vessel, means for maintaining
20 uid from the tank to the vessel and from the ves
sel to discharge, as will be more fully described
in the following specification and shown in the
accompanying drawings, in which:»Fig. 1 is a sectional View taken half on the line
o I-I and half on the line I-IA of Figure 2.
Fig. 2 is a transverse sectional view taken on
the line 2-2 of Figure 1.
Fig. 3 is a transverse sectional View taken on
the line 3-«3 of Figure 1.
f.
Fig. 4 is a detail view of the operating lever stop
mechanism.
In the drawings like characters of reference in
dicate corresponding parts in each figure.
For the purpose of clarity certain parts have
been omitted from some of the ñgures.
The numeral I indicates a casing having front
and rear walls respectively numbered 2 and 3,
and side walls 4 and 5. In the upper part of the
casing a feed tank 6 is formed, which is pro
et O
(Cl. 225-1)
vided with a top closure l and a bottom wall Il.
Below the feed tank, measuring devices 9 are pro
vided, which are coupled together for alternate
operation by a rock shaft II) from a lever I i which
is conveniently disposed to one side of the casing
I.
The measuring devices 9 are identical in gen
eral construction, but oppositely arranged as to
disposition of their elements.
'I‘he measuring devices 9 consist of chambers
I2 and I 2A, having top closures I3 and I3A and
5 O bottom closures I4 and I4A. A transfer pipe i5
leads from the bottom wall 8 of the feed tank
6 to ported passages I 6 and ISA formed in the
bottom closure. Spring closed inlet valves Il and
I'IA are interposed between the passages E5 and
55 IGA and the chambers I2 and 12A respectively.
-
The feed tank 6 is supplied with beer, under
suitable CO2 pressure from below, through a feed
pipe 3i] which extends to a point above the max~
imum liquid level in said tank and is provided
at its free end with a float valve 3! which closes
when a predetermined level is reached. A branch
32 leads from the feed pipe through a valve 33 to
the bottom of the tank, the purpose of which will
hereinafter be described.
Gas pressure is provided for the interior of the
feed tank from a CO2 pipe 34, see Figure 3, which
branches out from a T 35 to a pipe 36 leading
into the feed tank and provided with a normally
open valve 3l which is opened by a float 3S when
a minimum reserve of liquid has entered the tank
through the pipe 30, the gas passing through the 3
float valve 3l to a pressure control valve general
ly indicated by the numeral 39.
The pressure control valve 39 is provided with
a standard ¿il supporting a cylinder 4I through
which a stem 42 extends. _The stem is fitted at 40
its base with a valve closure 43 and at its upper
end. with a button 44 abutting a flexible dia
phragm 45.
The stem 42 is urged upwardly by
a spring 4t of suitable tension, so that when the
pressure within the tank is below normal, while
a normal liquid reserve is in the tank, the spring
46 will urge the diaphragm upwards and lift the
closure valve 43 off its seat to allow the gas pres
sure in the tank to be raised. Obviously when
the pressure is raised to normal, the pressure on 50
the upper surface of the diaphragm will be great
enough to close the valve 43.
Extending from the opposite end of the T 35
and preferably formed integrally therewith, is a
Valve 4l from which a branch pipe 48 extends
2
2,111,040
through the bottom wall 8 to a point adjacent
the top closure 1 of the tank 6.
A stand pipe 49 extends downwardly through
the tank 6 from above the maximum liquid level
Ui and is ñtted at its lower end with a blow off or
safety valve 50.
This safety valve is only relied
upon to function under abnormally high pressure
Within the system and forms no essential part of
the invention. Extending downwardly through
10 the tank and into the casing I is an air relief pipe
5| which is fitted with a valve 52 which is closed
by a float 53 when the minimum liquid reserve is
in the tank the valve is therefore normally closed.
At the base of the pipe 5| is a normally open
15 valve 54 having a stem 55 which on being raised
closes the valve against gas relief from the tank.
Mounted horizontally adjacent the wall 4 is a
shaft 56 which extends through one wall of the
casing and is fitted with a hand lever 51. Se
20 cured upon the shaft within the casing are three
cams 58, 59 and 60, which are respectively adapt
ed to engage the stems of the valves 54, 41 and 33
when the lever 51 is rocked.
Pivotally mounted upon one of the casing walls
25 is a bell crank 6| having a horizontal leg 62 which
extends below the stem of the valve 54 and hav
ing a vertical leg provided with a slot 63 through
which the crank is operatively connected by a
pull rod 64 extending through the casing wall so
30 that when the rod is pulled outwardly the valve
54 is closed, thus shutting off the air relief pipe
5| and the interior of the tank 6 from communi
cation with the atmosphere irrespective of the
float valve 52.
The operation of filling either of the chambers
35
I2 or I2A is accomplished in the movement of
the hand lever II from the end of its stroke back
to a vertical or normal position, and so that the
lever may not be moved say from its extreme
40 right position to normal and then back to right
again, I provide a stop mechanism such as is
shown in Figure 4 in which 65 indicates a quad
rant secured to the shaft I0 having arcuate
shoulders 66_and stops 61 and 61A.
In the cen
45 tre of the quadrant a projection 68 is formed
having opposed apertures providing a centre lug
69 and side lugs 10 and 10A. Two brackets 1|
and 1|A are mounted from the casing I between
which brackets the quadrant 65 is adapted to
rock. Each of these brackets slidably supports
a plunger 12 and 12A, these two plungers are
provided with enlarged outer ends 13 and 13A
respectively and knobs 14 at their inner ends
which are adapted to be engaged by the lugs of
55 the quadrants. Slidable vertically of the quad
rants are keepers 15 and 15A which are pro
vided adjacent their upper ends with key hole
slots 16 having their enlarged parts uppermost
and of such size as to accommodate the enlarged
60 outer ends 13 and 13A of their respective plung
ers 12 and 12A, While their narrower portions
embrace the intermediate portions of said
plungers.
The quadrant as shown in Figure 4 is in nor
65 mal or centre position indicated by the dotted
line C and has been brought there on the last
movement of the lever || from the position indi
cated by the dotted line R, therefore the keeper
15A being disengaged by the plunger enlarge
70 ment 13A has dropped onto the stop 61A and
the quadrant and lever are prevented from be
ing moved back to the position R and must nec
essarily be moved next towards the dotted line
position L.
In moving the lever to the L position, the stop
61A raises the keeper 15A so that when the lug
10A engages the plunger 12A and draws its en
largement 13A into the enlarged portion of the
key hole slot of the keeper 15A, it retainsI said
keeper in raised position free from the shoulder
c:
66 of the quadrant. The final movement of the
quadrant to the L position causes the lug 69 to
drive the plunger enlargement 13 out of the en
larged portion of the key hole slot of the keeper
15, thus allowing said keeper to ride on the 10
shoulder 66 and as the lever is returned to C
position to drop to the slot 61, thus preventing
the lever’s return until it has completed its move
ment to the R position.
In operating the dispenser, assuming the tank
6 to be empty, the float valve 31 on the CO2
branch pipe 36 will be closed and the ñoat valve
3| on the beer feed pipe will be open, and since
there will be no gas pressure in the tank the
pressure controlled valve 42 will be open. On gas 20
pressure being applied to the beer supply below
the machine and the main beer line valve, not
shown, being opened, beer will rise through the
pipe 30 and the open valve 3| into the tank.
Air in the tank will be purged out through the
open iioat valve 52, the pipe 5| and the open
valve 54 to atmosphere. When the minimum
reserve level is reached in the tank, the float 53
will have risen, closing the valve 52, thus clos
ing the system and allowing the incoming beer 30
to build up a pressure. It should be here pointed
out that normally the same gas pressure, when
admitted to the tank, will be the same as that
supplied to the top of the supply barrel. The
beer will flow into the tank until the pressure 35
therein is equal to that in the barrel less the
static head of beer between the barrel and the
valve 3|.
When the liquid level is raised to a predeter
mined point, the float valve 3| will close, thus 40
shutting off further entry of beer to the tank 6.
Assuming that a new keg of wild beer is tapped
and that after filling an undue pressure devel
ops from the occluded gas in the beer, the safety
valve 50 will open and purge the system of the
excess pressure, so that undue foaming will not
take place when beer is admitted to either of the
measuring chambers I2 and |2A.
Assuming that the hand lever I | is moved from
normal to the L position, the fork 2| will cause
the inlet valve I1 and the foam valve 20 to open,
so that beer from the tank 6 may flow by grav
ity through the pipe |5 into the chamber |2 and
allow any foam forming during ñlling to pass
through the valve 20 into the pipe I8 where it
may condense to flow back later on a subsequent
opening of said valve. This will ñll the chamber
I2 in which the beer will be held on the closing
of said valves incidental to the return of the lever
to normal or C position. When the lever is 60
moved over in the opposite direction, to the R
position, the chamber |2A will be filled in a,
similar manner to that above described and si
multaneously finger 26 will open the valves 22 and
25. It will be noticed that due to the gap be 65
tween the stems of these two valves, the valve
25 will lag slightly behind the valve 22 in open
ing, so that the chamber I2 will commence to
discharge with the opening of the valve 22 and
will continue to discharge by gravity as soon as
the valve 25 opens. The movement of the lever
|| from normal position to the end of its stroke
will therefore cause one chamber to fill and one
to discharge and the return of the lever to nor
mal will close all the valves leading to and from 75
2,111,040
3
tank above the normal liquid level and a dis
said chambers, so that lever movement in the
opposite direction will fill the chamber last dis
charged and discharge the chamber last nlled.
During slack periods, in order that the beer in
charge valve for discharging the liquid from the
chamber and a lever for operating the valves of
the chamber, said lever being adapted when
the tank may not assume room temperature, it
moved in one direction to Open the inlet valve
is desirable to return it to the source of supply
which is kept in a cold room or otherwise chilled.
To do this, the lever 5'? is rocked, thus rocking
the cams 58, 59 and 60 and operating the valves
54 and 41 and 33 in the order named. This
valve movement first closes the air relief pipe
5|, next admits gas through the pipe 48 to the
and the foam valve and when moved in the oppo
site direction to open the discharge valve.
4. A «drink dispenser comprising a sealed tank
having an inlet and being adapted to be fed
top of the tank and subsequently, though this
may be arranged to take place simultaneously,
establishing communication between the beer
feed pipe 30, the branch 32 and the bottom of
the tank 6. The beer is then permitted to flow
downwards through the valve 33, back to the
source of supply by gravity since the gas pressure
means having a unitary operating lever for de
livering liquid from the tank to the chamber and
20 at the tank and the source of supply are now
equal.
As soon as the lever 5'? is returned to
normal position, the tank becomes relieved of
pressure through the valve 5?. and the pressure
from below will again cau-se the beer to enter
25 and ñll it to the point determined by the float
valve 3l.
The system is washed out by forcing water
through it from a feed pipe Tl and a wash out
pipe "I8 and also by operating the lever i l.
Should it be desired for any reason to empty
the system without returning the beer in the
tank back to the source of supply, the rod B4 is
pulled outwardly, thus closing the valve 54, the
flow from the source of beer supply would be
shut off and the lever Il manipulated in the
usual manner.
In this way gas would enter the
feed tank to prevent any subatmospheric pres
sure developing during discharge through the
discharge passage 23.
What I claim as my invention is:
1. A drink dispenser comprising a seale-d tank
having an inlet and being adapted to be fed from
a source of liquid supply, means for admitting
liquid to the tank up to a normal level, a meas
uring chamber connected to said tank, said
chamber having an inlet valve communicating
uring chamber connected with the tank, valve
for discharging the liquid from the chamber, a
pipe communicating between the upper part of
the chamber and the tank above the liquid line,
and a valve controlling the flow through said
pipe, said valve being adapted for operation by
said operating lever.
20
5. A drink dispenser comprising a sealed tank
adapted to be filled from a source of supply un
der gas pressure, a measuring chamber in com
munication with said tank and a valve mecha
nism for admitting liquid from the tank to the 25
chamber and for discharging the said liquid
therefrom, said tank having a liquid inlet pipe
controlled by a float valve, a gas inlet pipe and
means for closing off the gas inlet pipe when a
predetermined pressure is developed in said tank.
6. A drink dispenser comprising a sealed tank
adapted to be ñlled from a source of supply un
der gas pressure, a measuring chamber in com
munication with said tank and a Valve mecha
nism for admitting liquid from the tank to the
chamber and for discharging the said liquid
therefrom, said tank having a liquid inlet pipe
controlled by a float valve, a gas inlet pipe and
a float valve to sai-d gas inlet pipe for shutting
off the gas pressure until a predetermined quan
40
tity of liquid is admitted to the tank.
7. A drink dispenser comprising a normally
sealed tank, a measuring chamber connected
with the tank, a valve mechanism for admitting
liquid from the tank to the chamber for passing
air or foam from the chamber to the tank as the
2. A drink dispenser comprising a sealed tank
having an inlet an-d being adapted to be fed from
a source or" liquid supply, means for admitting
chamber ñlls and for discharging liquid from
the chamber, a ñoat valve controlled liquid inlet
to the tank to admit liquid under pressure, a gas
inlet pipe to the tank, and means for admitting 50
gas through said pipe to maintain a predeter
mined pressure when the liquid in the tank is
within predetermined levels, and means` for clos
ing off said pressure and opening the tank to
atmospheric pressure when the liquid is below a
liquid to the tank up to a normal level, a meas
predetermined level.
uring chamber connected to said tank, said
chamber having an inlet valve communicating
8. In a dispenser of liquid normally under pres
sure and having a feed tank, a measuring cham
ber below said feed tank, a liquid inlet valve
communicating between the tank and the cham
ber, a relief valve between the tank and the
chamber, a discharge valve for withdrawing the
liquid from the chamber, and a valve for admit
between the chamber and the tank, a foam valve
communicating between the chamber and the
tank above the normal liquid level and a dis
charge valve for discharging the liquid from the
chamber and a lever for operating the valves of
the chamber.
between the chamber and the tank, a foam valve
60
from a source of supply, means for admitting 10
liquid to the tank up to a normal level, a meas
communicating between the chamber and the
tank above the normal liquid level and a dis
charge valve for discharging the liquid from the
chamber and a lever for operating the valves of
the chamber and a relief valve operable in con
junction with the discharge valve for admitting
atmospheric air to the chamber when said dic
charge valve is opened.
3. A drink dispenser comprising a sealed tank
having an inlet and being adapted to be fed from
a source of liquid supply, means for admitting
liquid to the tank up to a normal level, a meas
ting atmospheric air to the chamber when the
discharge valve is open, said discharge valve be
ing arranged to open prior to the opening of the
air admitting valve.
9. In a dispenser of liquid normally under pres
sure and having a feed tank, a measuring cham
between the chamber and the tank, a foam valve
ber below said feed tank, a liquid inlet valve
communicating between the tank and the cham
ber, a relief valve between the tank and the
chamber, a discharge valve for withdrawing the
liquid from the chamber, and a valve for admit
communicating between the chamber and the
ting atmospheric air to the chamber when the
uring chamber connected to said tank, said
chamber having an inlet valve communicating
4
2,111,040
discharge valve is open, said discharge valve be
ing arranged to open prior to the opening of the
air admitting valve, and unitary means for oper
ating all of said valves.
10. In a dispenser of liquid normally under
Ul
the rock shaft to be moved in the same direction
from neutral in successive movements.
12. In a drink dispenser having two measuring
chambers each having an inlet and a discharge
valve, a rock shaft operatively connected to the
pressure and having a feed tank, a measuring
chamber below said feed tank, a liquid inlet valve
communicating between the tank and the cham
ber, a relief valve between the tank and the
valves of each chamber, said rock shaft having
a normal neutral position and being adapted
chamber, a discharge valve for withdrawing the
liquid from the chamber, and a valve for admit
ting atmospheric air to the chamber when the
discharge valve is open, said discharge valve be
ing arranged to open prior to the opening of the
air admitting valve, a lever adapted to open the
valves communicating between the tank and the
chamber simultaneously when moved in one di
rection and to open the discharge and air admit
ting valves when moved in the opposite direction.
20
11. In a drink dispenser having two measuring
chambers each having an inlet and a discharge
valve, a rock shaft operatively connected to the
valves of each chamber, said rock shaft having
a normal neutral position and being adapted
when moved to one side of neutral position to
open the inlet to ñll one chamber and when
moved to the opposite side of the neutral posi
tion to open the inlet valve to fill the second
30 chamber and to open the Valve to discharge the
previously filled chamber, and means preventing
when moved to one side of neutral position to
open the inlet to fill one chamber and when
moved to the opposite side of the neutral posi
tion to open the inlet valve to fill the second
chamber and to open the valve to discharge the
previously ñlled chamber, and means preventing
the rock shaft to be moved in the same direction
from neutral in successive movements, said means
comprising a quadrant secured to the shaft, said
quadrant having opposing arcuate shoulders and
stops, a support adjacent each end of the quad
rant, a pair of keepers carried by the supports
adapted to be actuated by the quadrants, one of 20
said keepers being adapted to be raised as the
quadrant moves in one direction towards neutral
position and the other keeper being adapted to
slide along an arcuate shoulder and as the quad
rant returns to neutral position to engage the
stop and prevent said quadrant from returning
over its former movement until it has been moved
beyond neutral position and to the limit of its
stroke in a direction opposite to the first men
tioned stroke.
30
HOWARD CHARLES ALLEN.
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