Note: Descriptions are shown in the official language in which they were submitted.
The present invention relates to improvements
in vending machine control circuits which enable paying
back and escrowing in the highest possible denomination
~ of coins.
" The present invention relates to means to control
the paying out of amounts deposited in excess of a selected
vend or as an escrow or refund using the least possible
number of coins available to achieve the payout. The
improvement is particularly adaptable to payout units which
include a plurality of coin tubes for storing different
denomination coins used in the payout and resides in means
associated with the different denomination coin tubes which
respond to a condition in the tube when the coinage accumulated
therein falls below a predetermined amount. When this occurs
in the highest denomination coin tube, circuit means will be
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`, energized to cause payouts to be made from the coin tube for
the next higher coin denomination, and when coins of the ne~t
higher denomination are also exhausted for payout purposes,
payouts will be made from the next lower denomination coin ~-
tube and so forth until finally the payout will be in the
lowest denomination coins. The circuit means for accomplishing
this are at the heart of the invention. No similar means are
, included in any known vending control circuit.
~, It is therefore a principal object of the present
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invention to provide improved and more versatile means for
, controlling the paying out of coins from a vending or other
similar machine.
~nother objeck is to provide means for paying out
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or re~unding in the least possible number of coins taking into
~30 account coin availability in the different denominations.
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Anothe] objec~ is to shift frorn paying back coins of
one denorni.nation to paying back coins of l.esser denominations when
the coins of the h.igher denoMinations become e~hausted in a coin
storage for payback device.
Another object ls to ~urther reduce the chances for a
customer losing money deposited in a ~ending machine.
Another object is to provide greater flexibility and
versatil.ity in the refunding or paying back of amounts deposited ;
including amounts deposited in excess of a vend price as well as
total amounts de~osi.ted as in escrowing.
Another object is to provide a gate control means
operable in conjunction with the coin payout means on a vending
or other similar device to control the denomination of coins
paid back to a customer.
In accordance with a specific embodiment, in a coin
control device having means to accumulate amounts deposited and
means to pay back amounts deposited in excess of a vend price
including a plurality of coin tubes for respectively accumulating
different denomination coins, each o~ said coin tubes having coin
sensing means associated therewith to produce a response whenever ~ :
the quantity of coins therein has fallen below a predetermined
quantity, coin tube actuator means associated with each coin tube
and means for energizing the respective coin tube actuator means
: to pay back coins there~rom, the improvement comprising gate
circuit means associated with each coin tube, each of said gate . ~: :
circuit means having an output connected to energize the associated .`~
actuator means~ means connecting the output of the gate circuit `
associated with a higher denomination coin tube to an input to gate
:~ circuit means associated with a lower denomination coin tube,
circuit means for determining the highest denomination coin that
~; can he paid back, means including the sensing means associated with
a higher denomination coin tube to inhibit energizing of the
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actuator means associated therewi.th and prevent paying back coins
therefrom whenever a response is pro~uced b~ the coin sensing
means associated therewith, sai~ last named means including cir-
cuit means to establish a circuit to enable energizing of the
actuator means associated with a lower denomination coin tube that
contains more than the predeterm.ined quantity of coins therein
to make further paybacks therefrom.
In accordance with a further specific embodiment, there
- is provided~ in accordance with the invent.ion, in a coin control
device having means to payback amounts deposited in excess of a
vend price and to make coin refunds, the means including a
plurality of coin tubes for containing coins of different re-
spective denominations to be paid back, the improvement comprising
means associated with each of the coin tubes to produce an output
response whenever the quantity of coins contained therein falls
` below a preestablished quantity 9 actuator means associated re- .
. spectively with each of the coin tubes and energizable to cause
.~ the respective coin tubes to payback coins therefrom, means
associated with each o~ said coin tubes responsi~e to each output
response produced when the quantity of coins contained therein
falls below said preestablished quantity, said last named means
including means to inhibit energizing of the associated actuator
means, means for selectively energizing the respective coin tube
actuator means including a gate circuit having a gate associated : .
with each of said coin tube actuator means, each of said gates :
having input and output connections, means connecting an output :
of the gate associated with a higher denomination coin tube to
an input of a gate associated with a lower denomination coin tube,
- said connection establishing circuit means to energize the actu- :
ator means associated with the lower denomination coin tube wheneve~
the gate circuit associated with the higher denomination coin tube
isi~hibitedfrom operating because the quantity of coins therein
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is below sald preestablished quantity.
In accordance with a still further embodlment of the
invention, there is provid~d, :in a coin control device haviny
means to accumulate amounts deposited and means to payback : -
amounts deposited în excess of a vend price including a plurality
of coin tubes for respectively accumulating different denomination
coins including coin tubes for ni.ckels, dimes and quar-ters J each
of said coin tubes having coin sensing means associated therewith
to produce a response whenever the quantity of coins therein has
fallen below a predetermined quantity, coin tube actuator means
associated with each coin tube and means for energizing the
respective coin tube actuator means to payback coins therefrom,
the improvement comprising circuit means associated with a higher -
denomination coin tube to inhibit energizing of the actuator ~.
means associated therewith and prevent paying back coins therefrom
whenever a response is produced by the coin sensing means
associated therewith, said last named means including circuit
means to causing energizing of the actuator means associated with
a lower denomination coin tube to make further paybacks therefrom9
a first gate circuit associated with the quarter coin tube, said
first gate circuit producing an output to energize the quarter tube .
actua-tor means wherever an amount to be paid back at least equals :
.:
a quarter~ means to inhibit energizing of the quarter tube
actuator means whenever a response is produced by the means
associated with the quarter coin tube that indicate the quantity
of coins therein has fallen below said predetermined quantity,
:~ and a second gate circuit associated with the dime coin tube,
said second gate circuit having an input connected to the output ~ :
of the first gate circuit for producing an output to energize
the actuator means associated with the dime coin tube to pay back
~ dimes whenever the quarter coin tube is inhibited at a time when
::~ an amount to be paid back at least equals a quarter.
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These and other objects and advantages of the present
invention will become apparen-t after considering the following
detailed specifica-tion which covers a preferred embodiment of
the suhject device in conjunction with the accompanying drawings,
wherein:
FIG. 1 is a schematic circuit diagram of a control
circuit for use with the coin refund means .
of a vending or like machine, and
FIG. 2 is a cross-sectional view showing nickel,
dime and quarter coin tubes and their associated
empty tube switches.
. Referring to the drawing more particularly by reference
numbers, number 24 refers to an output decoder circuit similar to
the output decoder circuit 24 shown in Figure 3 of the drawings
in Levasseur ~.S. Patent 3,841,456, issued October 15, 1974.
Other circuits in the parent case which are operated in conjunction
with the decoder circuit 24 are fully and completely described
therein and some of these can be used with the present circuit
i~ desire~ and they w~ll not be again described ln detail herein.
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The present means can also be used with other types o~ vending
control circuits including those disclosecl in Levasseur U.S.
Patent 39841,456, issued October 15, 1974, Douglass U.S. Letters
Patent No. 3,754,629, dated August 23, 1973 and Johnson II U.S.
Patent No. 3,687,255, dated August 29, 1972, all o~ which are
assigned to Applicant's assignee.
The decoder circuit 24 as disclosed herein is in the
output of the comparator circuit 16 and produces outputs which
control certain other operations and circuit functions and
devices including certain other devices on the vending machine.
The decoder circuit 24 has a plurality of input connections some
of which are connected to the output leads 7~-86 of the
comparator circuit 16 9 and the decoder has an input connection
to the carry output lead 92 from the compara-tor circuit. The
decoder also has a plurality of outputs at 94, 96, 98, 100 and
102~ These outputs go to low conditions when they are active.
The output 94 goes to a low condition whenever the A counter 14
has an amount accumulated therein that exactly equals the amount
that is accumulated in the B counter 20. This is illustrated in
the drawing by the expression A= B adjacent to the lead 94. In
a similar manner, the voltage on the encoder output 96 goes low
whenever the amount accumulated in the counter 14 is one or more
increments greater than the amount accumulated in the counter 20,
the voltage on the output 98 goes low whenever the amount entered
in the counter 14 is two or more increments greater than the
amount in the counter 20; the vol-tage on the output 100 goes low
whenever the amount entered in the counter 14 is three or more
increments greater than the amount in the counter 20
and the voltage on the-
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output 102 goes low whenever the counter 14 has in it five
or more increments more than are entered in the counter 20.
Only one o~ the encoder output leads 94, 96, 98, 100 or 102
can be at a low condit.ion at any one time, and the highest
detected incremental di~ference between the amounts entered
in the counters will prevail. That is, if the condition
exists for an output on tlle lead 102 to be low, this will
prevail and take precedence over possible lows which may
also exist on the other three outputs 96, 98 and 100, and ~ ~.
~10 so forth~ :
The encoder circuit 24 as shown has two other
inhibit input connections, one beiny an inhibit input
identified as > 2 inhibit which appears on lead 104 and ~;:
the other is identified as > 5 inhibit which appears on
lead 106. When either o~ the leads 104 or 106 is at a low
:~ state due to closure of an empty coin tube switch 108 or
110, they operate to prevent the encoder output leads 98 ::
and 102 from being operative. These same conditions enable
the next highest incremental difference encoder output
(outputs 96 and 98 respectively~ to assume control. I~ the
circuit as shown, the encoder output lead 100, which is the
~ 3 output is not used because it is not needed in a nickel,
dime, quarter system and therefore is not connected. This
is because the circuit as shown is wired primarily to ~ .
accommodate a monetary system such as that used in the United
States where one increment represents a nickel, two increments ~ -
represents a dime, and Eive increments represents a quarter.
In monetary s~stems where different combinations of increment ~;
values are used it may be necessary to use the > 3 output
~30 lead 100, and to also provide another associated inhibit
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input connection. In such a case, it may also be necessar~
to provide an additional coin swi-tch correspondiny to the
different value coins. The present circuit could also be
made to accommodate more coin denominations including pennies
and half dollars, -for example.
The decoder circuit 24 as shown is included to
provide -the complement of the sum of the ou-tputs of the
counters 14 and 20, and this is aeeomplished in the deeoder
eircuit by means of inverters 386, 388 and 390 and NAND gates
392 and 394 which are connected as shown. The outputs of the
decoder eireui-t 24 are present on the output leads 94, 96, 98,
100 and 102 as aforesaid and these outputs lndieate various
relationships that ean exist between the values aeeumulated
in the A and B counters 14 and 20, and are indicated as
stated by the presenee of a low on the respective output leads.
For example, when the amount aeeumulated in the A eounter 14
(representing an amount deposited) is equal to the amount
aeeumulated in the B eounter 20 (representing the vend price)
the output on the deeoder output lead 94 will be low, and the
outputs on the other deeoder output leads will be high. In
similar manner, when the eounter 14 has aecumulated in it a
lar~er amount than is aeeumulated in the B eounter 20, the
output on the output lead 96 will be low. When the amount
in the A eounter 14 is larger than the amount in the B eounter
by two, three and four inerements, then the output on output
lead 98 will be low. When a coin tube switch sueh as the
dime eoin tube switeh 108 i~ elosed indicatin~ the tube is
empty or is below some predetermined quantity of eoins produein~
a low eondition on the lead 104, whieh lead is eonnected to
lead 396, it will operate to inhibit the output on the lead 98.
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When the counter 14 has three or more increments more than
the counter 20, the output 100 will go low to indicate the
condition. This condition, while available, is not used in
the circuit as shown, but could be if the circuit were adapted
to other coinage systems. When the A counter 14 has five or
more increments more than the B counter 20, the output on the
lead 102 goes low unless at this time the quarter empty tube
switch 110 is activated and closed putting a low on connected
leads 106 and 398 and on the input to the gate 450 associated
with the ~ 5 lead 102.
The decoder circuit 24 has other connections which
operate to prevent certain outputs from oceurring. For
example, when the output lead 98 is low it prevents the lead
96 from going low. This is aceomplished in the circuit by
lead 400 which eouples the output of the gate 434 assoeiated
with the lead 98 to the input to the gate ~24 assoeiated with
the lead 96. In like manner, whenever the output on the lead
G 102 goes low it will prevent outputs on the leads 96 and 98
from going low by signals on lead 402 whieh is conneeted
between the output of the gate 450 associated with the output
lead 102 and inputs to the gates 434 and 424 assoeiated with
the outputs 98 and 96. Consequently, if the inhibit > 5 lead
398 is low, the > 2 output on the lead 98 will go low for any
count pre9ent in the A eounter 14 that is two or more greater
I than the amount aecumulated in the B counter 20 including
;~ eonditions where the differenee is five or more increments.
' Similarly, if both the inhibit input leads 396 and 398 are lowat the same time indicating a deficiency of both dimes and
quarters for payout, then the > 1 output lead 96 will go low
for any count in the ~ counter 14 that is one or more greater
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than the amount in the B counter 20. This means that whenever a
five increment coin such as a quarter is not available for refund
or escrow, the circuit as shown, will indicate that a two incre-
ment coin such as a dime should be refunded lnstead, and if dimes
are likewise not available then the circuit will indicate that
refunds are to be made in one increment coins only, namely, in
nic]cels. It should be apparent that the present circuit can also
be used with any known coinage system regardless of the relative
increment values of the coins involved, although some minor
; 10 changes in the connections may be required.
The decoder circuit 24 has another inverter 404 which
is connected between the carry-out output lead 92 of the comparator
circuit 16 and the various output gates of the decoder circuit 24.
The inverter 404 provides a low condition on lead 406 to prevent
any false outputs from being produced by the decoder 24 when the
A counter 14 has an amount accumulated therein that is less than
the amount accumulated in the B counter 20. The outputs on the
lead 406 are applied to the inputs of a plurality of decoder
output gates including NA~D gate 408 which is the gate that pro-
duces the outputs on the lead 94 to indicate a condition of
equality between the amounts accumulated in the counters 14 and
20. The other controls in the circuit which establish different
output conditions of equality and the ~ 1, ~ 2 9 ~ 3, and ~5 are
described in detail in Levasseur U.S. Patent 3,841,456, issued
October 15, 1974 and it is not deemed necessary to repeat the
description since it is not part of the present invention as
such.
Fig. 2 shows a typical set of coin tubes frbm which
paybacks or escrow is made from a vending machine. In Fig. 2.
2 three coin tubes are shown to illustrate their construction -
including a nickel, a dime and a quarter coin tube. Each of
the coin tubes has its own associated empty coin tube switch,
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-the empty coin tube sw:itch fo:r the dime coin tube being
identified by number 108 ancl the ernpty coin -tube swi.tch for
the quarter coin tube bei.ng identi.fied by number llO. These
coin tube switches are eonnected respectively to the leads
104 and 106 as shown in the circuit of Fig. 1. It is not
deemed necessary to describe the operation of the coin tubes
and their associated empty tube switehes and actuator means
in detail since these may be of conventional eonstruetion.
The subjeet eontrol eireuit provides a large
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measure o~ flexibility and selectivit~ in its construction
and operation, and lends itself to use under a variety of
different operating circumstances including a variety of
different vend price possibilities, coin denomination
possibilities, and a variety of selectivity with respect
to the outputs produced. These possibilities manifest
themselves in -the circuit as disclosed by providing control
over the payout control means, the escrow control means
and the other circuits and circui-t elements associated
10 therewith.
Thus there has been shown and described a novel
and extremely versatile vending control circuit which fulfills
all o~ the objects and advantages sought therefor. It is
apparent, however, as indicated, that many changes, modifications,
variations, and other uses and applications of the sub~ect
- control are possible and will become apparent to those skilled
in the art after considering this specification which describes
a pre~erred embodiment only. All such changes, modifications,
variations and other uses and applications which do not depart
` 20 from the spirit and scope of the invention are deemed to be
covered by -the invention which is limited only by the claims
which follow.
This application is a division of application
Ser. ~o, 194,572 filed March 13, 1974.
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