U.S. patent number 3,805,999 [Application Number 05/318,180] was granted by the patent office on 1974-04-23 for hot drink dispenser.
Invention is credited to Martelle J. Syverson.
United States Patent |
3,805,999 |
Syverson |
April 23, 1974 |
HOT DRINK DISPENSER
Abstract
A housing includes a heated water tank, two pairs of particulate
food product cartridges from which metered servings are funneled
into a cup along with hot water. The hot water vapors are blown out
of the housing by a fan directing air downwardly past the agitation
and metering scoop in the food cartridges and through the funnel
out of the machine. A cup support shelf is provided below the
funnel and heated water conduit and a float is provided therebelow
connected to a switch for lighting a warning light should liquid in
the bottom of the housing rise above a predetermined level. The
electrical circuitry is also de-energized. A control switch is
actuatable by the cup to insure the cup's presence before water or
food product is discharged. A coin mechanism is provided in the
housing and includes a first cam in the path of a coin for holding
the coin which actuates a switch connected to a motor for rotating
the cam shaft. A second cam will cause the motor to turn the cam
shaft one full revolution after it has started turning by the coin
actuating the switch. The coin is then dropped to the bottom of the
coin mechanism. Upon the cam shaft making one complete revolution
the first cam will again be in a position to receive the next coin
to repeat the cycle. During the one revolution of the cam shaft
food product cams will operate switches a predetermined number of
times to cause solenoids connected thereto to discharge
corresponding numbers of scoops of food product from the food
cartridges. Still another cam controls the maximum quantity of
water which can flow from a solenoid valve controlled water conduit
such that no more than a cup of water will be discharged. The water
cam is adjustable and includes coaxial overlapping portions which
are engaged by the switch previously engaging the coin for the
desired degrees of the one revolution of the cam shaft. Upon the
coin dropping from the coin guide the switch actuating element
moves through the coin guide for engagement with the adjustable
cam.
Inventors: |
Syverson; Martelle J. (Albert
Lea, MN) |
Family
ID: |
26931684 |
Appl.
No.: |
05/318,180 |
Filed: |
December 26, 1972 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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238447 |
Mar 27, 1972 |
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Current U.S.
Class: |
222/129.4 |
Current CPC
Class: |
G07F
15/12 (20130101); G07F 13/065 (20130101) |
Current International
Class: |
G07F
15/00 (20060101); G07F 15/12 (20060101); G07F
13/06 (20060101); G07f 013/02 () |
Field of
Search: |
;222/129.1,129.3,129.4,132 ;221/96 ;141/90,359 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Reeves; Robert B.
Assistant Examiner: Kocovsky; Thomas E.
Attorney, Agent or Firm: Zarley, McKee & Thomte
Parent Case Text
This is a divisional application of application Ser. No. 238,447
filed Mar. 27, 1972.
Claims
I claim:
1. A hot drink dispensing machine, comprising, a housing, a heated
water tank in said housing having a discharge outlet above a cup
support, a particulate food product storage chamber in said housing
having a discharge outlet closely adjacent said heated water
outlet, a pair of solenoids for controlling the discharge of heated
water and particulate food product into a cup on said cup support,
a cup actuatable switch at said cup support connected to and
controlling said pair of solenoids, a fan in said housing directing
air from around the discharge outlet of said particulate food
product storage chamber and away therefrom such that any hot vapors
from said heated water discharge outlet cannot rise into the area
of said discharge outlet for said particulate food chamber, said
particulate food product storage chamber being further defined as
including a pair of cartridges having different particulate foods,
and a metering and agitation scoop being provided in each
cartridge, one of said pair of solenoids being connected to the
scoop in one of said cartridges and a third solenoid being
connected to the scoop in the other cartridge, and a two section
funnel being provided below the discharge outlet of said two
cartridges for channeling said particulate material into said cup,
said funnel including a common vertical dividing wall, a common
forward wall extending downwardly and rearwardly, a common rear
vertical wall, and opposite side walls extending downwardly and
laterally inwardly, said two section funnel having a
two-compartment throat with said common vertical dividing wall
cooperating to form said two compartments on opposite sides
thereof, and said discharge outlet of said water tank being closely
adjacent and behind said common rear vertical wall, and said fan
being located in said housing to blow air past the discharge outlet
of said cartridges through the two sections of said funnel out and
away from said heated water outlet conduit, a second switch being
connected to said three solenoids and a float being provided in
said housing below said cup support, said float being positioned to
actuate said second switch upon liquid in the bottom of said
housing rising above a predetermined level.
Description
The most desirable vending machine is a machine that is trouble
free, simple to operate and inexpensive to manufacture. The machine
of this invention is suitable for use in a variety of locations
including offices, homes and restaurants. In most places where
coffee and other hot drinks are served it is necessary to prepare a
fresh pot several times a day. The machine of this invention
includes throw-away food cartridges for coffee and hot chocolate,
for example, in addition to cartridges of non-dairy cream and
sugar. Water may be plumbed into a heated holding tank in the
machine. The use of particulate freeze-dry coffee, hot chocolate
and the like make it unnecessary to prepare these drinks in
advance. An agitation and metering scoop in the base of each of the
product cartridges is connected to a solenoid in turn operated by a
cam for reciprocating the scoop the required number of times to
give a precise quantity of required food product. Use of the exact
amount of freeze-dry food product is particularly important for
giving the best drink possible and minimizing materials
expense.
The hot drink dispensing machine of this invention also includes
controls which allow the machine to be only operated safely and
honestly. A coin is required to start the operation and a
predetermined quantity of food product will be dispensed from the
cartridge along with no more than one cup of heated water. A
control switch is operated by a float under a cup support thus
leakage of water will cause the system to be deactivated while a
warning light is turned on.
A problem frequently encountered with the use of dry product mixed
with water is that the fumes from the hot water will moisten the
supply of product thus preventing it from flowing from its
container. This is prevented in the dispensing machine of this
invention by a fan blowing air from around the food product
cartridges down into the area of the hot water discharge conduit
feeding into the cup along with the food product and then out of
the machine taking the water vapors with it and, of course,
preventing the water vapors from rising to contaminate the
particulate food product in the cartridges by entering the
cartridges through the opening in which the agitation scoop is
positioned.
This invention consists in the construction, arrangements and
combination of the various parts of the device, whereby the objects
contemplated are attained as hereinafter more fully set forth,
specifically pointed out in the claims, and illustrated in the
accompanying drawings in which:
FIG. 1 is a front perspective view of the hot drink dispenser of
this invention.
FIG. 2 is a cross sectional view taken along line 2-- 2 in FIG. 1
showing the product and hot water flow and the air flow for
removing hot water varpors from the machine.
FIG. 3 is a fragmentary perspective view of the particulate food
funnels positioned below the food cartridges and above the cup
support.
FIG. 4 is a cross sectional view taken along line 4-- 4 in FIG.
2.
FIG. 5 is an enlarged fragmentary perspective view of the coin
mechanism.
FIG. 6 is an exploded perspective view of the cams in the coin
mechanism.
FIG. 7 is a cross sectional view taken along line 7-- 7 in FIG. 5
showing the starting cam holding a coin in the coin guide for
actuating a motor starting switch.
FIG. 8 is a view similar to FIG. 7 but showing the starting switch
being actuated by an adjustable cam after the cam shaft has started
to turn causing the first cam to release the coin from the coin
guide and engagement with the starting switch.
FIG. 9 shows the coffee cam having one cam surface for actuating a
switch connected to a solenoid in turn connected to the scoop in
the coffee cartridge.
FIG. 10 is a view showing the chocolate cam having a plurality of
cam surfaces for actuating an associated switch in turn connected
to a solenoid for operating a scoop in the chocolate food cartridge
to give multiple metered scoops of chocolate.
FIG. 11 is a view showing the motor cam and a switch which is
deactivated until the cam rotation has been started by the coin
actuated switch.
FIG. 12 is a cross sectional view taken along line 12-- 12 in FIG.
7 showing alternate positions of the coin switch actuating element
first engaging the coin and then after the coin has been released
by the coin cam upon rotation thereof; and
FIG. 13 is an electrical schematic.
The hot drink dispenser of this invention is referred to in FIG. 1
generally by the reference numeral 10 and includes a housing 12. A
front wall 14 includes a cup support shelf 16 having space for two
cups. A selection switch 18 is adjustable between a coffee position
20 and a chocolate position 22, as indicated by the related lights.
Sugar and cream may be selected by a switch 24 and a warning light
26 is provided for signalling when a float 28 has risen due to
water 30 in the bottom of the housing 12 such that a switch 32 is
actuated.
A coin mechanism 34 is positioned behind the front panel 14 to
receive coins through an opening 36. Rejected coins are returned
through an opening 38.
Inside the housing it is seen that water is plumbed into a heating
storage tank 40 through a conduit 42 and is released from the tank
through a conduit 44 controlled by a water solenoid valve 46. The
lower end 48 of the water conduit 44 is positioned directly above a
cup 50 on the support shelf 16 abutting the back side wall 52 of a
particulate product funnel 54 such that food product and water are
fed into the cup 50 simultaneously.
The funnel 54 is seen in FIG. 3 on a shelf 56. Two pairs of funnels
58 and 60 are provided, the funnel 58 adapted to receive coffee and
chocolate in sections 62 and 64, respectively, while sections 66
and 68 of funnel 60 receive sugar and cream respectively. The
forward walls 58 and 60 extend downwardly and rearwardly and
cooperate with end walls 70 and 72 in funnel 58 and the rear wall
52 and center wall 72 to channel the food product to the throat 74
for feeding the cup 50. The funnel 60 includes end walls 76 and 78
and center wall 80 feeding through a throat 82.
As seen in FIG. 4, four product cartridges are provided for feeding
the respective funnel sections. Two larger cartridges 84 and 86 are
provided for coffee and chocolate, respectively, while the smaller
cartridges 88 and 90 are for the sugar and cream. A pair of
solenoids 92 and 94 are connected to scoops 96 and 98 for the
coffee and chocolate cartridges while solenoids 100 and 102 are
connected to agitation and metering scoops 106 for the sugar and
cream cartridges.
As seen in FIG. 2, the interior of the particulate material food
cartridges is kept dry by a fan 108 blowing air as indicated by the
arrows 109 downwardly from the top of the housing 12 along the
cartridges and through the scoops 96, 98, 104 and 106 and then
through the funnel sections 62, 64, 66 and 68 where the air then
escapes past the cup 50 taking with it hot water vapors from the
discharge end 48 of the water conduit 44. The normal tendency of
the water varpors to rise through the funnels to contaminate the
particulate material in the cartridges is thus overcome and
prevented. A cup actuatable control switch 110 is provided having
an actuating yoke element 112 and is operated by pushing the yoke
112 rearwardly with the cup 50 which, as will be described
hereinafter, causes the controlling electrical circuits to be
energized and thereby allow product and water to be dispensed.
Accordingly, water and product can only be dispensed when a cup is
in place ready to receive the water and the food product for mixing
in the cup. The cup switch 110 and associated yoke 112 function to
operate the coffee and chocolate solenoids 92 and 94 and water
solenoid valve 46 while a yoke actuating element 114 connected to a
switch 116 controls the sugar and cream solenoids 100 and 102.
The coin mechanism 34 includes a frame 118 having a front wall 120
and oppositely disposed rearwardly extending side walls 112. A coin
guide 124 is formed by closely spaced together plates 126 providing
a coin path 128 therebetween and extending from the coin slot 36 on
the front wall of the dispenser housing 12, as seen in FIG. 1. A
slot 130 is formed in the walls 126 in the path 128 of the coin
such that the actuating element 132 of a microswitch 134 will be
actuated by any coin 136, as seen in FIG. 7, when the coin is held
by a coin cam 138 on a cam shaft 140 mounted between the frame side
walls 122 and rotated by a motor 142. The cam 138 includes a trio
of segmental disk plates sufficiently wide enough collectively to
provide a support base for the coin 136. The peripheral length of
the cam 138 may be as great as is needed. It is seen in the
electrical schematic of FIG. 13 that upon the coin switch 134 being
actuated by the coin 136 a circuit is established through the motor
142, the cup switch 110 and a switch 144 operated by a motor cam
146. It is seen in FIG. 11 that when the coin 136 is first inserted
into the machine the switch 144 is in the position of the solid
line in FIG. 13 but upon the motor 142 turning the cams the cam 146
moves the switch 144 to the dash line position of FIG. 13 making an
alternate circuit through the motor 142. At this time, as seen in
FIG. 8, the cam 138 has moved away from alignment with the coin
guide 128 thereby releasing the coin 136 to fall to the bottom of
the coin mechanism and thereby allowing the coin switch 134 to open
except that it moves then into engagement with an adjustable water
cam 148, as seen in FIG. 9, thereby maintaining the switch 134 in
its closed position. The cam 148 includes two relatively rotatable
disk elements 148A and 148B adjustable to provide a peripheral cam
surface of between approximately 180.degree. to 360.degree. or any
other configuration as the conditions might warrant upon varying
the shape of the component cam portions 148A and 148B. The
adjustment of these cam portions 148A and 148B is made to keep the
switch 134 closed sufficiently long for the water solenoid 146 to
give no more than one full cup of water.
The switch 18 on the front of the dispenser 12 has been set for
coffee and thus the coffee light 20 has been energized and the
coffee solenoid 94 is actuated upon a switch 150 being operated by
a coffee cam 152 having a single actuating cam surface 154. A
single cam surface 154 is needed for coffee since only one scoop of
coffee material is needed per cup and thus one solenoid operation
will be sufficient. In the case of chocolate, with the switch 18
being turned to its right-hand position, the chocolate solenoid 92
will be actuated upon the switch 156 being operated by the
plurality of cam shoulders 158 on the cam 160. Accordingly, the
desired number of scoops of chocolate may be provided by varying
the number of cam shoulders 158. Thus it is seen that the coin
switch 134 and the cup switch 110 function as master switches for
operating the coffee and chocolate solenoids 94 and 92 in addition
to the water solenoid 46. The motor 142 is initially dependent upon
the switch 134 while the coin 136 is in a position on the cam 138
to close the switch 134 but after that the motor is in a circuit
with the switch 144 which will remain closed for substantially a
full revolution of the cam 146. It is reopened when the cam 146
returns to its position of FIG. 11 with the actuating element of
the switch being in the notch in the cam 146. Should water
accumulate in the bottom of the machine in an excessive amount the
float 28 will actuate the switch 32 to open the circuit through the
coin switch 134 thereby rendering inactive the entire system until
the problem has been corrected. At the same time the warning light
26 will go on as a circuit through it will have been established.
The sugar and cream solenoids 100 and 102 are seen to be operated
by the switch 24 on the front of the dispenser housing 12 and the
cup switch 116 actuatable by the yoke 114.
Thus it is seen that substantial simplicity has been built into a
very effective hot drink machine which provides complete control
over the dispensing of a variety of hot drink products such as
coffee and chocolate milk.
* * * * *