July 24, 1962
w. DANzlGER ETAL
3,045,870
HOT BEVERAGE VENDER
Filed Dec. 2, 1957
6 Sheets-Sheet 1
FIG. I
î COFFEE
AL»
INVENTORS
i.
ATTogzrvgY
July 24, 1962
w. DANzlGER ETAL
3,045,870
HOT BEVERAGE VENDER
Filed Dec. 2, 1957
6 Sheets-Sheet 2
FIG. 6
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274 2,6
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INVENTORS
Charles D. ¿us/1,
W'L'Zízlam ßan/zz/ger
BY
Joseph QOÍCÍ
WW
¿5am
ATTQRNEY
July 24, 1962
w. DANZIGER ETAL
3,045,870
HOT BEVERAGE VENDER
Filed Dec. 2, 1957
6 Sheets-»Sheet 3
l
/58
INVENTORS.
258
William ßœnzz,
BY
Charles 11R, Las
Joseph 90M
„W
ATTORNEY
1
July 24, 1962
w. DANZIGER ETAL
3,045,870
HOT BEVERAGE VENDER
Filed Dec. `2, 1957
>
6 Sheets-Sheet 4
FIG. 8
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INVENTORS
Wzllliam .üanzi er
Charles ßß/as
Joseph gold
¿www @39M
July 24, 1962
W. DANZIGER ETAL
HOT BEVERAGE VENDER
3,045,870
’
Filed Dec. 2, 1957
e sheets-sheet 5
4:4:
200
202
INVENTORS
Wálliam LDanza/1 er
Chai-¿es ß. Eras
BY Josep/z Qoáoí
ATTORNEY'
July 24, 1962
w. DANZIGER Em.
3,045,870 »
HOT BEVERAGE VENDER
Filed Dec. 2, 1957
64
6 Sheets-Sheet 6
FIG. I8
INVENTORS
Wïlía'anz ßanzayer‘
BY
Charles .Z1 Rus/1f
Joseph íoídf
ATTÜRNEY
States
arent O ” ICC
l
3,045,870
Patented July 24, 1962
2
Tati-“.5570
sanitary reasons that the cream not be brought into con
tact with certain types of materials or mechanical mov
William Danziger, Franklin Square, Charles D. Rush,
Valley Stream, and Joseph Gold, Brooklyn, N.Y., as
signors to Continental Vending Machine Corp., West
ing parts such as are found in ordinary pumping de
vices. To meet this requirement, in accordance with a
still further aspect of the present invention there is pro
HGT BEVERAGE VENDER
bury, N.Y., a corporation of New York
Filed Dec. 2, 1957, Ser. No. 769,095
17 Claims. (Cl. 222--70)
This invention relates to beverage dispensing appara
tus, and particularly to coin-operated apparatus such as
is used for dispensing coifee, entitled Hot Beverage
Vender.
The machine disclosed herein as a preferred embodi
ment of the invention also includes means for dispens
ing soup or hot chocolate and the like, but these latter
means .do not by themselves form a part of this invention.
Coffee _dispensing machines must, of course, include
apparatus for supplying cream and sugar along with the
vided a unique pumping arrangement of the type wherein
the cream is pressed through a ilexible hose by a mecha
nism located externally of the hose. The particular pump
ing arrangement disclosed herein is especially adapted for
use in a dispensing machine in that it operates with rela
tively little power and can readily be disassembled to re
move the hose from the pumping mechanism for servic
ing or repair.
Accordingly, it is an object of the present invention
to provide a beverage dispensing machine that is su
perior to such machines provided heretofore. It is an
other object of this invention to provide such a machine
having improved control arrangements for permitting the
customer to select the quantity of a mixing ingredient,
coifee, and desira'bly this apparatus should be controllable 20 such as sugar or cream, to be dispensed as part of the
by the customer to permit individual selection of the
amounts of such mixing ingredients in accordance with
each customer’s individual taste. The apparatus provided
beverage. It is a further object of this invention to pro
vide a coffee dispensing machine having a coffee brew
unit that is simple in construction and especially adapt
for this purpose in prior machines, however, has not
ed for trouble-free operation over a long period of time.
been entirely satisfactory in several respects. For ex 25 It is a still further object of this invention to provide- a
ample, in a number of prior machines the customer can
beverage dispensing machine having improved means to
only select one of several preset amounts of cream or
store and supply a mixing ingredient, particularly cream.
sugar, i.e. in fixed increments, with the result that some
IOther objects and advantages of the invention will in part
customers are not able to obtain the precise amount they
be pointed out in, and in part apparent from, the follow
desire. Furthermore, it sometimes happens that a cus 30 ing description considered together with the accompany
tomer will neglect to adjust the sugar and cream controls
ing drawings, in which:
prior to the start of the dispensing operation. Since the
FIGURE l is a perspective view of a coiIee dispens
previous user may have set these controls at an ex
treme position (such as for “black” codec), the new cus
tomer might receive an entirely unacceptable cup of coliï'ee.
In accordance with one aspect of this invention, means
are provided to prevent such a result and to solve the
foregoing problem.
To assure that there always is fresh coiTee available,
the dispensing machine should include an automatic brew
unit arranged to produce a relatively small amount of
coffee at frequent intervals in accordance with the de
ing machine including apparatus constructed in accord
ance with the present invention;
FIGURE 2 is a vertical section taken along line 2-2
of FIGURE l, showing details of the control mechanism
for adjusting the amount of sugar to be dispensed with the
coffee;
FIGURE 3 is a sectional view taken along line 3--3
of FIGURE 2;
FIGURE 4 is a sectional view taken along line 4_4
of FIGURE 3;
mand. To prevent leakage and faulty operation, the in
FIGURE 5 is a sectional View taken along line 5_5
terior of this unit should be tightly sealed from atmosphere
of FIGURE 2, showing details of the resetting mecha
during the brewing operation. However, because the
nism for returning the sugar control knob to its normal
brew unit must be cleaned and then recharged with granu
position after a dispensing operation has been completed;
lar coíIee between each brewing operation, means must
FIGURE 6 is an elevation view showing the interior
be provided for obtaining access to the interior of the
of the dispensing machine of FIGURE 1 with its front
unit, and these means advantageously should be operable
door in open position;
in a simple manner by the usual automatic timing mech
FIGURE 7 is a detail view showing, in enlarged scale,
50
anism. In accordance with another aspect of the present
the elements of the coffee brewing equipment shown in
invention, this problem is solved by a unique closure and
the upper right-hand corner of -FIGURE 6;
sealing arrangement which is economical to manufacture
FIGURE 8 is a cross-section view taken along line
and reliable in operation.
8-8 of FIGURE 7, showing the interior of the coffee
As is well known, the cream to be dispensed with the
brew unit;
coiîee is subject to spoilage after a period of time in 55
FIGURE 9 is an enlarged view of the closure seal for
storage and hence it is necessary at frequent intervals to
the coíîee brew unit;
supply the machine with fresh cream. In many prior
FIGURE 1G is a detail section taken along line 10
coffee dispensing machines, the cream is stored in an
1t) of FIGURE 8, showing the upper end of the hot
ordinary dairy container which, after most of the cream
water spray pipe;
has been used up, is replaced by a full container. With 60
FIGURE 1l is a horizontal section taken along line
such an arrangement, it almost invariably happens that
11-11 of FIGURE 6, showing the rotatable slotted disc
a small quantity of cream remains in the original con
for feeding sugar into the cup;
tainer. This remainder should, to prevent the growth of
FIGURE 12 is a longitudinal section of the pump used
harmful bacteria, be thrown away rather than mixed
65 to supply cream to the beverage dispensing station;
in with the new cream. To avoid such an economic loss,
in accordance with a further aspect of the present inven
tion a unique cream supply system is provided' which as
sures that the cream container is completely emptied
before replacement.
In connection with pumping the cream out of the sup
ply container and to the coffee cup, it is important for
FIGURE 13 is a cross-section of the cream pump taken
along line 13-13 of FIGURE 12;
FIGURE 14 is a longitudinal section 0f the check
valve used in the cream feed line;
FIGURE 15 is a cross-section taken along line 15-15
70
of FIGURE 14 to show the retaining spider for the check
valve ball;
3,045,870
¿l
3
FIGURE 16 is a cross-section of the accumulator form
ing part of the cream feed line;
FIGURE 17 is a horizontal section taken along line
17--17 of FIGURE 7, showing particularly the thermo
static sensing element for maintaining the coffee in the
storage tank at a constant temperature; and
FIGURE 18 is a vertical section taken along line
arm thereupon moves upwards to deactuate the switch
46 and stop the flow of sugar into the cup.
By turning the sugar control knob 34 counterclockwise
to the extreme setting labelled “none,” the switch 46 will
be rotated clockwise (referring to FIGURE 2) away
from the spiral cam 56 to such an extent that the cam
lobe 62 will not actuate the switch during a dispensing
cycle. Consequently, in this condition no sugar will
18-18 of FIGURE 6 showing the arrangement of parts
ilow into the cup. Alternatively, if the control knob
with the cabinet door closed.
Referring now to FIGURE 1, the dispensing equip 10 is turned clockwise to its “double” setting, the switch 46
ment is contained in a cabinet 20 the front panel of
which consists of a door hinged at its left-hand side to
permit access to the interior of the cabinet for servicing
or repair. This front panel is provided near the top
thereof with operating controls, generally indicated at 22,
for initiating a dispensing operation after the required
will be rotated sufficiently close to the spiral cam that
the switch will be actuated substantially at the same time
that the cam lobe 62 strikes the sensing arm 52'. As a
result, sugar will flow into the cup for a period of time
suiiicient to provide a portion of sugar that is twice the
average amount. The precise amount of sugar dispensed
number of coins has been inserted into a coin slot 24
can, of course, be varied continuously between these two
near the right-hand side of the panel. These operating
controls include a centrally-located coffee button 26
which when depressed starts a cycle of operations for
dispensing a cup of coífee. At the beginning of this
cycle, a beverage receptacle in the form of a paper cup
28 is automatically dropped into a dispensing station 36
recessed in the front panel, and this cup is held in place
extremes by adjusting the setting of the control knob 34.
by a pair of opposed spring grips 32 while being filled
with coffee and the selected amounts of cream and sugar.
To the right of the coffee button 26 there is a sugar
Since a customer might neglect to set the sugar control
knob 34, resetting means are provided for assuring that
this control knob normally is set at its “regular” posi
tion before a dispensing operation begins. For this pur
pose, the control shaft 38 carries on its inner end a linger
member 68 including a horizontal tab 70. This tab is
engageable by a V-shaped scoop 72 consisting of a pair
of singularly-disposed wings 72a and 72b. This scoop
is secured to the offset end 74 of a rotatably mounted
horizontal rod 76 to which is fastened an upwardly-ex
presetting the amount of sugar to be
tending crank arm 7S carrying a spring strip 80. The
28 along with the coffee. This knob
an intermediate position (labelled 30 upper tip of this strip is engaged at the end of a dis
pensing cycle by a dog 82 secured to the cam shaft 58,
an average portion of sugar is dis
and this dog rotates the crank arm 78 and the rod 76
pensed. The knob, however, is rotatable between two
clockwise to shift the scoop 72 upwardly towards the
extreme positions (labelled “none” and “double”) to
tab 70.
permit the customer to select any desired amount from
If, at the start of a dispensing cycle, the sugar control
zero up to twice the average portion. To the left of the 35
knob 34 had been set at a position other than “regulan”
coffee button is a corresponding cream control knob 36
e.g. as indicated by the positioning of the tab 70 as shown
also normally in “regular” position and continuously ad
control knob ‘34 for
deposited in the cup
normally is set in
“regular”) wherein
justable between “none” and “double” positions.
The
in dotted outline at 70a or 7Gb in FIGURE 5, one of the
scoop wings 72a or 72b will contact the tab and carry
control mechanisms actuated by the sugar and cream
control knobs are essentially identical, Iand for that rea 40 it upwards so as to rotate it about the shaft 38 towards
its center (“regular”) position. Thus, the control knob
son only one of these mechanisms is shown and described
in detail hereinbelow.
Referring now to FIGURES 2 through 5, the sugar
34 and the face-cam 40 will be returned to their cor
responding intermediate positions. Accordingly, if a
subsequent customer does not adjust the setting of the
extends through the front panel of the cabinet and carries 45 sugar control knob, he will receive a cup of colfee having
control knob 34 is secured to a control shaft 38 which
an average amount of sugar.
a linear face-cam 40 arranged to rotate with the control
knob. Pressed 'against the face of this cam is a control
arm 42 forming part of a mounting plate 44 to which is
secured a ñow lcontrol switch 46 (eg. of the type known
as a microswitch). This plate and the switch are pivoted
about a pin 48 secured to the cabinet frame by means not
As mentioned above, an identical mechanism is used in
conjunction with the cream control knob 36 to assure
that the customer normally will receive an average amount
of cream. This mechanism is located immediately be
hind the cream control knob, `and includes a resetting
cam 40 so that, as this cam is rotated by the control knob
in which is concentrically mounted a slotted disc 86 hav
scoop (not shown) which is carried by the remote end
shown, and the plate is urged in a clockwise direction
of the rod 76 shown in FIGURE 2.
'about this pin by a spring 50 the upper end of which also
Referring now to FIGURES 6, 11 and 18, the sugar
is secured to the cabinet frame. By these means, the
control arm 42 is ñrmly pressed against the face of the 55 storage bin 64» is provided at its lower end with a pan 84
ing around its periphery a number of fingers 88 sepa
rated by semi-circular slots 90. The bottom of the pan
a range of positions about its pivot pin 48.
is formed with a rectangular outlet aperture 92 over the
The switch 46 is provided with a spring sensing arm 52
the end 54 of which is in contact with the periphery of 60 outlet nozzle 66 leading to the dispensing station 30.
Immediately above the disc 86 4is a ring plate 94 having
a linear spiral cam 56 (shown in its initial position prior
a sector-shaped shield portion 96 located over the aper
to the start of a dispensing operation). During the dis
ture
92 to serve as a shield for preventing sugar from
pensing cycle, this spiral cam is rotated one full revolu
passing directly from the interior of the bin to the outlet
tion counterclockwise by a cam shaft S8 driven at con
stant speed by the usual motor forming part or" a dis 65 nozzle.
The hub 9S of the disc 86 is coupled to a drive motor
pensing timer generally indicated at 60 in FIGURE 6.
10i) below the sugar storage bin 64. During a coffee
During .a normal dispensing cycle, one point of the lobe
dispensing operation, this motor is energized (by actua
62 of the cam S6 will depress the sensing arm 52 sufficient
tion of the iiow control switch 46 previously referred to)
ly to actuate the switch 46. Actuation of this switch in 70 to rotate the disc 86 for a period of time determined by
turn energizes a mechanism (to be described) which
the setting of the sugar control knob 34. As long as the
causes sugar to flow from a sugar storage bin 64 (see
disc rotates, it carries sugar from the bin 64 to beneath
FIGURE 18) through an outlet nozzle 166 and into the
the sector shield 96 and drops it down the outlet nozzle
cup 28. At the end of the dispensing cycle, the cam
66. Thus, the disc 86 and the switch 46, together with
34, the switch 46 is correspondingly rotated throughout
lobe moves out of contact with the sensing arm, and this
the dispensing timer 60, serve as flow control means to
3,045,870
5
6
control the amount of sugar dispensed with the coffee.
Because certain common beverage ingredients, such as
sugar, are hygroscopic in nature (i.e. they tend to absorb
moisture readily), there has existed a problem in con
trolling the flow of such ingredients out of a supply bin
and to a beverage receptacle. That is, moist sugar for
example tends to clog up a feeding mechanism, and to
pinned eccentrically to a second disc 140. This latter
disc is rotated by a shaft 142 the drive motor for which
also lis controlled by the brew-’cycle timer.
At the start of a brewing cycle, the top of the brew
unit 104 is opened and a fixed quantity (ordinarily one
quarter pound) of granular coffee is dropped into the
tube 106 by a coffee chute 144 extending down from a
“bridge over” an outlet aperture so as to prevent smooth
coffee hopper 146. (For this purpose, the coffee hopper
and controllable flow. Furthermore, in a `feeding mecha
nism wherein there are relatively close spacings between
sliding parts and the like, the sugar particles tend to stick
is provided with «a slotted disc 147 which operates like
the slotted disc 86 previously described in connection with
the sugar storage bin 64.) The top closure plate 116
then is moved down into seal position and (referring
again to FIGURE 8) hot water is fed into the interior of
the brew unit through a curved spray pipe 148 which is
formed at its upper end with perforations 150 to direct
the hot water onto all portions of the granular coffee
on these parts and produce a grinding action which con
siderably increases the driving power requirements.
It has been found that this problem is solved by ar
ranging the slotted disc 86 with a substantial clearance
between the ends of the fingers S8 and the side wall of
the pan 84. Advantageously this clearance is approxi
mately equal to the radial depth of the slots 90. With
charge.
The lower end of this spray pipe 148 is integrally
such an arrangement, rotation of the disc 86 will cause
secured to the wall of the tube 106, and communicates
the sugar (or any other relatively hygroscopic ingredient) 20 through an aperture in this wall with an annular water
to flow smoothly from the sugar storage bin 64 and down
inlet groove 152 formed in the base 120. This groove in
the outlet nozzle 66 to the cup 2S. The flow, further
turn is connected by a pipe 154 (see also FIGURE 6)
more, is at a nearly constant rate (Le. the sugar does not
to a hot water supply tank 156 which maintains a supply
flow in discrete increments as in the usual slotted or
of water at a temperature of about 200° F. and a pres~
apertured d-isc construction), and hence the quantity of
sure of about l5 p.s.i. A valve 158 in this latter pipe is
sugar dispensed may be controlled quite precisely by con
controlled by the brew-cycle timer so as to cause hot
trolling the time interval during which the disc rotates.
water to flow into the brew unit 104 for a predetermined
As mentioned above, this time interval is set by the posi
time (normally about 2 minutes) at a rate sufficient to
tioning of the sugar control knob 34.
provide l2 cups of coffee during this period.
Referring now to the upper right-hand portion of
While the hot water is entering the brew unit `104, the
FIGURE 6, the fresh liquid coffee to be dispensed is
pressure in `the tube 106 (normally about 5 p.s.~i.) is suf
stored in a coffee storage tank |102 having a capacity of
ficient »to produce a substantial force tending to move
24 cups. When the coffee in this tank drops to a level
the closure plates 116 and 126 away from the tu-be. How
where only l2 cups remain, an automatic brewing cycle
ever, the closure plates are positively held in place by the
is initiated by the usual means, not shown, to brew an
links 130 and y138 which are aligned with the axes of the
additional l2 cups of fresh coffee and to transfer this
corresponding shafts 134 and 142 so as to provide the re
coffee to the storage tank. This coffee is produced in a
quired reactive force without any need for energizing the
coffee brew unit 104 now to be described.
motors which drive these shafts. The only flexible re
Referring now to FIGURES 7 through 10, the brew
gion exposed to the internal tube pressure is the small
unit 104 comprises a tank in the `form of a cylindrical 40 area represented by the washer lip 114, and the seal pro
tube 106 having an external flange 108 secured to its
duced by the deformation of this ‘lip is well adapted to
upper end.
Seated on this flange is a flexible rubber
washer 110 held in place by a clamp ring 112 screwed
to the ñange. The inner diameter of the washer is
prevent leakage.
The liquid coffee produced by the incoming hot water
is forced out of the brew unit 104 through screened aper
smaller than the tube diameter so that the washer forms tr.. Cx tubes 160 formed in the wall ofthe tube 106. These aper
a resilient lip 114 extending inwardly around the entire
tures communicate with `an annular coffee outlet groove
periphery of the open end of the tube, as indicated in
16.2 formed in the base 12€) immediately beneath the inlet
dashed outline in FIGURE 9.
groove 152, the .two grooves being sealed by three O-rings
Movable into and out of the open end of this tube 106
164 which press against the side wall of the tube. The
is a top closure plate 116 which is circular and has a 50 coffee is fed from -the outlet groove to the coffee storage
diameter larger than the aperture formed by the washer.
tank 102 by means of a coffee hose »166.
Thus, when the closure plate is moved downwardly into
With these annular grooves 152 and l162., it is unnec
the tube end as shown in FIGURE 8, it deforms the
sary to precisely position the tube 106 relative to the base
washer lip 114 towards the interior of the tube to pro
120. Thus, the tube and spray pipe 148 may be removed
vide a pressure-resistant, liquid-tight seal. A special ad 55 for cleaning and then replaced in a short time without
vantage of this arrangement is that it does not require
difficulty.
close mechanical tolerances; that is, normal variations
After the required amount of coffee has been brewed
in lateral or Vertical positioning of the closure plate do
and passed to the storage tank ‘102, the bottom closure
not have any important effect on the quality of the seal.
plate 126 is moved downwards and away (as shown in
The lower end of the tube 106 rests on an interior 60 dashed outline in FÍGURE 7) to permit the used coffee
shoulder 118 forming part of a cylindrical base mem
grounds -to drop -into a waste container 168 immediately
ber 120', so that the tube is readily removable from this
beneath. At the same time, the brew-cycle timer ac
base member for cleaning or repair. A second rubber
tuates another valve (not shown) in the hot water pipe
washer 122 is secured to the bottom of the base -120‘ by
154 leading to the -brew unit spray pipe 148 so as to di
means of another clamping ring 124, and this latter 65 rect a heavy stream of hot water into the tube for sever
washer serves to form a liquid-tight seal (as described
al seconds and thus ñush out any remaining coffee par
above with reference to the first washer 110) with a
ticles. Subsequently, `the bottom closure plate is returned
bottom closure plate 126.
to its seal position and the brew unit 104 is ready for
The top closure plate 116 is moved relative to the tube
another brewing operation -when required.
106 by a pivoted arm 128 (FIGURE 7) which is actu 70 Reverting now to FIGURE 6, during a coffee dispensing
ated by a link 130 pinned eccentrically to a disc 132.
cycle the brewed coffee is fed from the storage tank
This disc is rotated by a shaft 134 the drive motor for
102 through a hose 170 and to a metering valve 172
which is controlled by the usual brew-cycle timer (not
which is controlled (through the usual means, not shown)
shown). The bottom closure plate 126 is operated by a
by the dispensing timer 60 »to fix the 4amount of coffee
bell crank 136 which is actuated by another link 138 75 deposited »in the cup 28. From this valve, the coffee
3,045,870
passes through a coffee outlet hose 174, the end of which
feeds the coffee into a trough 176 leading to a guide
tray 178 secured to the door of the cabinet 26 adjacent
the dispensing station 30 (see also FIGURE 18). The
bottom of this tray slopes downwardly towards the dis
pensing station, and a nozzle 18d communicates with this
tray and serves to direct the coiiee «into the cup 2S.
Immediately alongside the coffee outlet hose 174 is
a cream outlet 182 through which cream is supplied to
the trough 178 from a refrigerator -box 13d `in which is
mounted a pair of cream containers 186 and 188 one
above the other. This cream outlet 182 is at the end of
a cream hose 19t) which passes through the thermally
insulated wall of the refrigerator box and through an
output check valve 192 to a smaller hose ‘194 formed of
soft iiexible latex. This flexible hose passes through a
cream pump 196 (to be described) and leads to an “ac
that old cream will remain in the machine for a long pe
riod of time.
Referring now to FIGURES 12 and 13, the cream
pump 196 includes a central shaft 226 which extends
through the insulated wall of the refrigerator box 184
and is driven by a gearbox and motor 228 mounted on
the outside of the box. This shaft carries an offset arm
23€) in which is pressed a small rod 232 carrying an ec
centric pressure member in the form of a roller 234 sup
ported by needle bearings 236. Positioned about this
roller is a rigid metal cup 238 having a relatively large
central aperture through which the shaft 226 extends.
The side Wall of this cup is engaged by the roller 234 as
it revolves around the shaft, and the loose mounting pro
vided by the large aperture of the cup permits the cup to
ber connected to both of the cream containers.
shift laterally with respect to the shaft as the roller re
volves. The flexible hose 194 extending up from the ac
cumulator 198 is wrapped around this cup in the form of
a loop, and a rigid ring, in the form of a plastic casing
includes
Referring
a -main
now body
to FiGURE
268, having
16, the
inletaccumulator
and outlet tit
tings 262 and 284, and a top casing 266 teleseoped over
the body with an O-ring seal 288. The casing also carries
the axis of the shaft 226', it applies pressure eccentrically
cumulator” 198 Áwhich serves as a common supply cham
240 provided with internal spline-grooves 242, is tele
scoped in place around this loop.
While the roller 234 travels in a circular path about
to the cup 238 which in turn pinches the iiexible hose
an inlet ñtting 215i) to which is connected a conduit means
in the form of a hose 212 leading to the bottom of the 25 194 against the casing 240. This rotary pinching action,
which does not completely close the hose, forces the
upper cream container 186. The inlet îitting 282 is con
cream in the hose through the cream outlet 182 (FIG
nected to the Ábottom of the lower cream container 188 by
URE 6) to the trough 176, and at the same time draws
another conduit means consisting of a hose 214, an inlet
cream up from the accumulator 198 into the lower end
check valve 216 (FIGURES 6, 14 and l5) and a second
of the flexible hose. The spline-grooves 242 in the wall
hose 217. This check valve includes a tubular member
218 having a reduced-diameter portion provided with an
end seat 229 for a ball 222.
When cream is i'lowing
out of the lower container, the ball is held by a rubber
retaining spider 224 jammed in position in the tubular
member.
As long as there is cream in the upper container 186,
the pressure in the hose 212 leading to that container rwill
be greater than the pressure in the hose 217 leading to
the lower container 188, yand the inlet check valve 216
prevents any ñow of cream from the upper container into
the lower container. Consequently, any cream dispensed
by the pump 1196 will be supplied by lthe upper container.
As a result, the upper cream container will be complete
ly emptied lbefore cream is drawn out of the lower con
tainer.
This action is especially supplemented by the
accumulator 198 which, by virtue of the fact that its ca
pacity (about 3 fluid ounces) is large relative to the
amount of cream pumped during a dispensing cycle (one
iluid ounce maximum) assures that the pressure in the
inlet fitting Ztl-2 does not momentarily drop below the
pressure in the hose 217 during the short periods of time
of the casing 240 grip the hose lightly to prevent it from
feeding through the pump.
The output check valve 192 in the hose 190 leading
to the cream outlet serves to maintain this latter hose
full of cream so that the amount of cream dispensed is
independent of the level in the containers 186 or 188, and
additionally serves to assure that the cream pump is al
ways primed. This check valve 192 is constructed iden
tically to the inlet check valve 216 previously described.
The pump 196 includes a tubular frame member 244
which is secured by bolts 246 to a flange 248 forming
part of a support ring 250 fastened to the wall of the re
frigerator box 184. The pump shaft 226 is provided
with roller bearings 252 adjacent its left-hand end and
with ball bearings 254 at its right-hand end to assure
smooth and free rotation. The ball bearings are held in
place by the plastic casing 240 which is fastened to the
frame member 244 by a bayonet-type clip 256 (FIGURE
6) for ready removal and disassembly of the pump for
cleaning or repair.
The pump motor 228 is energized by the dispensing
timer 60, during the first part of a dispensing cycle, for a
period of time that is determined by the setting of the
cream control knob 36 (FIG. 1) on the `front panel of
when the cream pump 196 is operating.
When the upper container 186 has been emptied, and
the level of the cream in the hose 212 drops below that
the cabinet 21), i.e. as by means of a control mechanism
of the level of the cream in the lower container 188, the
identical to that shown in FIGURE 2. Thus, a pre
pressure in the hose 2‘1‘7 will become ‘greater than the
selected discrete quantity (typically in the range of zero
pressure in hose 212 and hence cream can flow from the
to one ñuid ounce) of cream is dispensed. During the
lower container into the accumulator 198. Since the
remaining part of the dispensing cycle, the coffee is
check valve 216 somewhat impedes the flow of cream out 60 poured into the trough 176 and thereby serves also to
of the lower container, the »accumulator serves an addi
flush any remaining cream down into the cup 28.
tional function in providing a supply of cream which can
Referring now to FIGURES 6, 7 and 17, the coifee
readily be drawn ott by the pump 196, and thus the ac
sotrage tank 102 is mounted on a pedestal 258 which
cumulator effectively insulates the pump from the restric
is permanently secured to the cabinet 20. Thus, the
tive eiiects of the check valve. The cream pump is op 05 tank may readily be removed from the cabinet for clean
erated »for no «more than four seconds at the beginning of
ing and servicing. The coffee in the tank is heated by
each dispensing cycle and, during the relatively long pe
a conventional electrical heating unit (not shown) in the
riod (i.e. at least about 10` to 15 seconds) that the cream
pedestal. The rear and right-hand side (referring to
pump is inactive `for the remainder of the cycle, the ac
FIGURE 7) of the tank 102 abut a semi-cylindrical sup
cumulator will be refilled from the lower container.
70 port wall 260 which conforms to the contours of the tank
After most of the cream has been dispensed from the
and is Íixedly secured to the pedestal.
lower `container 188, the upper container 186 normally
The temperature of the coffee in the tank 102 is main
will be replaced by the lower container and a new full
tained constant by thermostatic control of the electrical
container of cream placed in the lower position. There
current supplied to the »heating unit in the pedestal 258.
tore, there is no loss of cream, and there is no danger 75 For this purpose, there is secured to the support wall 260
3,045,870
a U-shaped thermal insulation shield 262 carrying an
adjustable temperature-sensitive bi-metallic element 264
of usual construction. This element is connected in the
electrical circuit which energizes the pedestal heating
unit, and operates to turn this unit otI and on in response
to changes in the coiiîee temperature as represented by
the heat radiated or conducted to the element 264 from
the exposed side 103 of the storage tank 102. It has
been found that this temperature control arrangement
very effectively maintains the coffee temperature con
stant, and is particularly advantageous in that it permits
the coffee storage tank 102 to be removed, when re
quired, without the need for disconnecting the wires lead
ing to the heating unit or the bi-metallic element 264.
Returning again to FIGURE 6, a supply of paper cups
is stacked in a cup magazine 266 to be fed out one at a
time from the Ibottom of this magazine through a cup
outlet 268, From this outlet, the cups slide down a
chute 270 (which is secured to the door of the cabinet
10
finger member and movable to rotate said ñnger member
and said control shañt back to a predetermined normal
position ‘after the preset amount of ingredient has been
deposited in the receptacle.
2. In a »beverage dispensing machine including a cabi
net with means to hold a receptacle to be automatically
filled with -a quantity of beverage including an- amount
of a mixing ingredient, apparatus `for feeding a preset
Aamount of said ingredient into said receptacle comprising,
in combination, storage means for holding a supply of
said ingredient, outlet means for carrying said ingredient
from said storage means to ythe beverage receptacle, flow
control means for said outlet means and arranged when
activated to cause said ingredient to pass through said
outlet means to said receptacle, a rotatably mounted
switch forming part of said ilow control means and ar
ranged when operated to stop the passage of said ingre
dient through said outlet means, a sensing arm for said
switch, a cam engaged with said sensing larm for actu
20) and «drop into place between the spring grips 32 at 20 ating said switch a predetermined time interval añter the
the dispensing station 30.
activation of said ñow control means, drive means for
In connection with the dispensing of other beverages,
rotating said cam at a constant speed during a dispensing
such as soup and hot chocolate, the hot water pipe 154
leading from the hot water supply tank 156 is provided
operation, a control arm movable through a range of
with a T-iitting 272 to which a second pipe 274 is con
25 sensing arm and Ithereby alter the pressure applied by
nected. This latter pipe carries hot water through a
valve 276 to a hose 278 which directs the hot water t0
the trough 176 and guide tray 178 leading to the dis
pensing station 30. The valve 276 is operated by the
dispensing timer 60 when the soup or hot chocolate con
trol buttons 280 and 282 (FIGURE l) are depressed
by the customer, and dispenses the required amount of
hot water for these beverages. As shown in FIGURE 6,
there is secured to the door of the cabinet 20 a pair of
storage bins 284 and 286 which contain supplies of the
powder mix for these beverages. Referring also to FIG
URE 18, these bins are provided with outlet nozzles
288 and 290 which direct the predetermined quantity of
mix into the cup 28.
Also on the cabinet door (FIGURE 6), there is pro
vided the usual coin mechanism 292 which counts the
coins dropped in the slot 24 (FIGURE 1), operates a
master relay (not shown) for starting the dispensing
positions and operative to rotate said switch and said
said cam to said sensing arm, whereby said time interval
is «determined by the positioning of said control arm, and
a control knob operable `externally of said cabinet and
connected to said control arm to set the positioning
30 thereof prior to the start of a dispensing operation.
3. In 'a beverage dispensing machine wherein a recep
tacle is automatically filled with .a quantity of beverage
including an amount of a mixing ingredient, apparatus
for feeding a preset amount of said ingredient into said
receptacle comprising, in combination, storage means for
holding a supp-1y of said ingredient, outlet means for car
rying said ingredient from said storage means to the
beverage receptacle, flow control means for said outlet ,
means and arranged when activated to cause a discrete
amount of said ingredient to ilow into said receptacle,
said flow control means including a manually-operable
control shaft rotatable throughout -a range of positions
and arranged to set the amount of said ingredient in ac
cordance with its position, an offset tab member carried
timer 60 when suflicient money has been deposited, and
rejects |bent or otherwise unacceptable coins and returns
by said shaft and extending out beyond the end thereof,
them through a coin-return chute 294. Beneath the hot
a V-shaped scoop `having «a pair of wings engageable
water supply tank 156 is the compressor 296 for the
with `said tab, and means operable at the end of a dis
refrigerator box 184.
pensing operation for shifting said scoop in a direction
Although a preferred embodiment of the invention has
been set Áforth in detail, it is desired to emphasize that 50 transverse to the axis of said control shaft, whereby said
`tab is dri-ven toward the center of said scoop so as to
this is not intended to be exhaustive or necessarily limita
rotate said tab and said control shaft back to a predeter
tive; on the contrary, the showing herein is for the pur
mined normal posi-tion.
pose of illustratiing the invention and thus to enable
4. In a beverage dispensing machine wherein a recep
others skilled in the art to adapt the invention in such
tacle at a dispensing station is «automatically filled with
ways as meet the requirements of particular applica
beverage, `apparatus for storing ‘and supplying a liquid
tions, it being understood that various modifications may
ingredient yof the beverage comprising, «in combination,
be made without departing trom the scope of the inven
iirst and second containers each adapted to hold a quan
tion as limited by the prior art.
tity Yof said ingredient, a common supply chamber, first
What is claimed is:
l. In a beverage dispensing machine wherein a recep 60 and second conduits connecting said ñrst yand second con
tainers respectively with said chamber to feed said ingre
tacle is automatically ñlled with a quantity of beverage
dient thereto, means for conveying said ingredient from
including an amount of a mixing ingredient, apparatus
said chamber to said dispensing station, and means re
for feeding a preset amount of said ingredient into said
sponsive to the presence of said »ingredient in said ñrst
receptacle comprising, in combination, storage means for
container, said last-named means 4being automatically
holding a supply of said ingredient, outlet means for
operable to pressurize 4the ingredient in said first conduit
carrying said ingredient from said storage means to the
beverage receptacle, vfiow control means for said outlet
to a greater extent than the ingredient in said second
means and arranged when activated to cause a discrete
conduit as long as there is «a supply of said ingredient
amount of said ingredient to flow into said receptacle,
in said ñrst container, vwhereby said ñrst container is
said liow control means including a manually-operable 70 emptied prior to said second container.
control shaft rotatable throughout a range of positions
5. In a -beverage dispensing machine wherein «a recep
and arranged to set the amount of said ingredient in ac
tacle »at a dispensing station is automatically ñlled with
cordance with its posi-tion, lan oiîset linger member secured
beverage, apparatus for storing and supplying an ingre
to said shaft to rotate therewith, and a resetting mecha
dient of the beverage comprising, in combination, first
nism including a V-shaped scoop engageable ‘with said 75 and lsecond containers each adapted to hold a quantity
3,045,870
11
ond containers each adapted to hold a quantity of said
cream, a common supply chamber having a capacity that
is large relative to the amount of cream to be dispensed
of said ingredient, a common supply chamber to be sup
plied with said ingredient from both :of said containers,
first and second conduits connecting said first and second
containers respectively with said chamber to yfeed said
ingredient thereto, pump means for conveying said ingre
dient from said chamber to said dispensing station, mean-s
for pressurizing :the ingredient in said first conduit to a
greater extent than the ingredient in said second conduit,
as ylong as there is a supply of said ingredient in said
with any one receptacle of coffee, first and second con
duits connecting said first and second containers respec
tively with said chamber to feed said cream thereto, pump
eans for conveying said cream from said supply cham
ber to said dispensing station, dispensing cycle timer means
prior to said second container, «and a check valve in said
for activating said pump means for a period of time that
is short relative to the total time interval for dispensing
a complete receptacle of coffee, means for pressurizing
second conduit for preventing fiow of said ingredient 4from
the cream in said first conduit to a greater extent than
first container, whereby said first container is emptied
the cream in said second conduit, whereby said first con
said first container .to said second container.
tainer is emptied prior to said second container, and a
6. In a beverage dispensing machine wherein a recep
tacle `at la dispensing s-tation is automatically filled with 15 check valve in Said second conduit for preventing the
fiow of said cream from said first container to said second
beverage, apparatus for storing and supplying a liquid
container.
ingredient of `the beverage comprising, in combination,
l0. In a beverage dispensing machine wherein a re
firs-t rand second containers cach adapted to hold a quan
ceptacle at a dispensing station is automatically filled
tity of said ingredient, la common supply chamber posi
tioned below said first container, first and second con 20 with a beverage including an amount of cream as an in
gredient thereof, apparatus for storing and supplying the
duits connecting said first and second containers respec
cream comprising, in combination, first and second con»
tively with said chamber to feed said ingredient thereto,
tainers each adapted to hold a quantity of cream, a com
mens for conveying said ingredient from said chamber
mon supply chamber having a capacity that is large rela
to said dispensing station, said first container being located
wholly `above said second container so that the ingredient 25 tive to the amount of cream that is dispensed into any
one receptacle, first and second conduits connecting said
in said first conduit is pressurized to a greater extent
containers respectively with said chamber to feed said
than the ingredient in said second conduit, whereby said
cream thereto, a flexible hose for conveying cream from
first container is emptied prior io said second container.
said chamber to be dispensed at said dispensing station,
7. In a beverage dispensing machine wherein a recepta‘
cle at a dispensing station is automatically filled with 30 a rotatably driven shaft, an eccentric pressure member
beverage, apparatus for storing and supplying an ingredi
ent of the beverage comprising, in combination, first and
driven by said shaft, said flexible hose being formed into
a loop extending around said pressure member, and a
rigid ring mounted around said loop in a fixed position
relative to the axis of said shaft, said ring being located
ingredient, a common supply chamber, means for con
veying said ingredient from said chamber to said dispens 35 sufficiently close to said eccentric pressure member that
ing station in discrete quantities suitable for dispensing
said hose is pinched therebetween, whereby the rotation of
in any one receptacle, said supply chamber having a large
said pressure member forces the cream through said hose,
capacity relative to the quantity of said ingredient dis
said first container being located above said second con
second containers each adapted to hold a quantity of said
pensed in any one receptacle, first and second conduits
tainer so that the cream in said first conduit is pres
connecting said first and second containers respectively 40 surized to a greater extent than the cream in said second
with said supply chamber to feed said ingredient thereto,
conduit, with the result that said first container is emptied
means for pressurizing the ingredient in said first conduit
prior to said second container.
to a greater extent than the ingredient in said second con
11. In a beverage dispensing machine, apparatus for
duit, whereby said first container is emptied prior to said
supplying a liquid beverage ingredient such as cream and
second container, and a check valve in said second conduit
the like, comprising, in combination, a chamber adapted
for preventing the Íiow of said ingredient from said first
to hold a quantity of said ingredient, a tiexible hose con
container to said second container.
8. In a beverage dispensing machine -wherein a recepta
cle at a dispensing station is automatically filled with bev
nected to said chamber to communicate with the ingre
dient therein, a tubular frame member open at one end, a
shaft rotatably and coaxially mounted within said tubular
frame member with a portion of said shaft protruding out
erage, apparatus for storing and supplying a liquid dairy
product, such as cream, to Ibe dispensed as an ingredient
through said open end, an eccentric pressure member
mounted on said shaft for rotation therewith beyond the
open end of said tubular frame member, said flexible hose
being formed into a loop extending around said pressure
of the beverage comprising, in combination, a refrigera
tor box,- first and second containers in said refrigerator
box and each adapted to hold a quantity of said dairy
product,> a common supply chamber positioned adjacent
member with said loop approximately coaxial with said
the bottom of said refrigerator box, first and second con
shaft, and a rigid cap telescoped over said tubular frame
duits connecting said first and second containers respecF
member at the open end thereof, the inner surface of said
tively ywith said chamber to feed said dairy product there
cap being located sufficiently close to said pressure mem
to, hose means `for conveying said dairy product up from
ber that said hose is pinched therebetween whereby the
said chamber and out of said refrigerator box near the 60 rotation of said pressure member forces said ingredient
top thereof, a pump for said hose means for drawing said
through said hose.
dairy product up out of said common supply chamber,
l2. In a beverage dispensing machine, apparatus for
said first container being located wholly above said second
supplying a liquid beverage ingredient such as cream and
container so- that the dairy product in said first conduit is
the like, comprising, in combination, a chamber adapted
pressurized to a greater extent than the dairy product Ob to hold a quantity of said ingredient, a fiexible hose con
in said second conduit, whereby said first container is
nected to said chamber to draw the ingredient therefrom, a
i
completely emptied into said supply chamber before any
rotatably driven shaft, an arm fastened to said shaft and
of the dairy product is drawn out of said second con
extending out a short distance away from one side there
tainer, and a check valve in said hose means above said
of, a cylindrical roller member secured to said arm with
pump to prevent the flow of said dairy product down to 70 its axis parallel to the axis of said shaft, a rigid cup
wards said common supply chamber.
shaped member loosely mounted on said shaft with the
9. In a coffee dispensing machine wherein a receptacle
inner surface of its side wall in contact with said roller
at a dispensing station is automatically Afilled with coffee,
member, said flexible hose being formed into a loop ex
apparatus for storing and supplying cream to be dispensed
tending around and in contact with the side wall of said
With said coffee comprising, in combination, first and sec 75 cup-shaped member, and a rigid support ring fixedly
3,045,870
13
14
mounted in position around said hose loop, said ring being
located sui‘liciently close to said cup-shaped member that
said hose is pinched therebetween in the region immediate
ly adjacent said roller member, whereby the rotation of
member that said hose is pinched therebetween whereby
said roller member for-ces said ingredient through said
hose.
13. In a beverage dispensing machine, apparatus for
supplying .a liquid beverage ingredient such as cream
and the like, comprising, in combination, a refrigerator
receptacle at a dispensing station is automatically ñlled
with hot beverage, means for storing and supplying said
the rotation of said pressure member forces said in
gredient through said hose.
16. In a hot beverage dispensing machine wherein a
hot bever-age comprising, in combination, a dispensing
machine cabinet having an opening for access to the
interior thereof, pedestal means permanently secured to
box, a chamber in said box and adapted to hold a quan 10 said cabinet in the interior thereof, a hot beverage stor
tity of said ingredient, a flexible hose connected to said
age tank removably mounted on said pedestal mean-s,
chamber to communicate with the ingredient therein, a
an electrical heating unit in said pedestal means for heat
ing the beverage in said storage tank, a support wall
for said storage tank yand abutting the side thereof that
at one end, a shaft rotatably and coaxially mounted 15 is remote ¿from said cabinet opening, said support wall
tubular «frame member secured to one Wall of said re
frigerator box, said tubular `frame member being open
within said tubular frame member with a portion of
being formed to 'match the contour of said storage tank
side to assure accurate positioning of said tank when
a roller member eccentrically mounted on said shaft for
it is placed on said pedestal means, and a temperature
rotation therewith beyond the open end of said tubular
sensitive thermostatic element for controlling said elec
`frame member, said flexible hose being formed into a 20 trical heating unit and secured in a fixed position relative
loopI extending around said roller member with said
to said support wall adjacent but spaced from said stor
said shaft protruding out through the open end thereof,
loop approximately coaxial with said shaft, and a rigid
cap` telescoped over said tubular frame member at the
open end thereof, the inner surface of said cap being
located suifciently close to said roller member that said
hose is pinched therebetween whereby the rotation of
said roller member around said shaft `forces said in
gredient through said hose.
14. ÁIn a beverage dispensing machine, apparatus for
age tank side, said thermostatic element being arranged
to respond to changes in the temperature of said storage
tank to maintain the temperature of the hot beverage
in said storage tank constant, and means for conveying
hot bever-age from said storage tank to said dispensing
station.
17. In a hot beverage dispensing machine wherein a
receptacle at a dispensing station is automatically filled
supplying a liquid beverage ingredient such as cream and 30 with hot beverage, means for storing and supplying said
the like, comprising, in combination, a chamber adapted
hot beverage comprising, in combination, a dispensing
to hold a quantity of said ingredient, a ílexible hose
machine cabinet having an opening in the front thereof
connected to said chamber to draw the ingredient there
for access to the interior of said cabinet, pedestal means
from, a rotatably driven shaft, an arm fastened to said
ñxedly secured to said cabinet within the interior there
shaft and extending out a short distance away from one 35 of and accessible through said opening, a cylindrical hot
side thereof, a cylindrical roller member secured to said
beverage storage tank removably mounted on said
arm with its axis parallel to the axis of said shaft, a
pedestal means in an upright position, an electrical heat
rigid cup-shaped member loosely mounted on said shaft
ing unit in said pedestal means Vfor heating the bever
with the inner surface of its side wall in contact with
age in said storage tank, a generally semi-cylindrical
said roller member, said ilexible hose being formed into 40 support wall for said storage tank. said support wall
a loop extending around and in contact with the side
closely abutting the side of said storage tank that is
wall of said cup-shaped member, and a rigid cap fixedly
remote from said cabinet opening, said support wall fur
mounted in position around said hose loop with its side
ther being formed to match the contour of said storage
wall in contact with said hose, said side wall being
tank and to extend along a substantial area thereof to
formed with spline-like serrations to lightly grip said 45 assure accurate positioning of said storage tank when
hose, said oap» side Wall being located suñ‘iciently close
it is placed on said pedestal means, a temperature-sensi
to said cup-shaped member Ithat said hose is pinched
tive thermostatic element «for controlling said electrical
therebetween in the region immediately adjacent said
heating unit, means for securing said thermostatic ele
roller member, whereby the rotation of said roller mem
ment to said support wall in a position approximately
ber forces said ingredient through said hose.
50 equidistant from the side edges thereof and adjacent but
15. In a beverage dispensing machine, apparatus for
spaced from said storage tank, said support 'wall being
supplying a liquid beverage ingredient such as cream and
formed with an aperture opposite said thermostatie ele
ment whereby said element responds to changes in the
to hold a quantity of said ingredient, a liexible hose con
temperature of said storage tank to maintain the tem
nected to said chamber to communicate with the in 55 perature of the hot beverage in said storage tank constant,
gredient therein, a tubular Iframe member open at one
and means for conveying hot beverage from said storage
end, a shaft rotatably and coaxially mounted within
tank to said dispensing station.
said frame with a portion of said shaft protruding out
References Cited in the ñle of this patent
through said open end, roller bearing means for support
UNITED STATES PATENTS
ing said shaft portion .for free rotation, an eccentric 60
the like, comp-rising, in combination, a chamber adapted
pressure member mounted on said shaft for rotation there
with beyond the open end of said frame, said flexible
hose being tformed into a loop extending around said
pressure member with said loop approximately coaxial
with said shaft, and a rigid cap telescoped over said 65
frame at the open end thereof and arranged to hold said
roller bearing means in position, the inner surface of
said cap being located suñiciently close to said pressure
479,637
1,989,395
2,572,541
2,621,838
2,718,843
2,730,034
2,832,510
Everett ______________ __ July
Betz et al. ___________ __ Jan.
Thompson et al. ______ __ Oct.
`Price _______________ __ Dec.
Iones ______________ __ Sept.
Svendsgaard _________ __ Jan.
Hill ________________ __ Apr.
26,
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23,
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l0,
29,
1892
1935
1951
1952
1955
1956
1958
2,872,075
Steiner ______________ __ Feb. 3, 1959
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