U.S. patent number 3,783,989 [Application Number 05/271,731] was granted by the patent office on 1974-01-08 for escrow and security device for coin and dollar bill operated vending machine.
This patent grant is currently assigned to The Seeburg Corporation of Delaware. Invention is credited to Herman George Jensen.
United States Patent |
3,783,989 |
Jensen |
January 8, 1974 |
ESCROW AND SECURITY DEVICE FOR COIN AND DOLLAR BILL OPERATED
VENDING MACHINE
Abstract
A door may be slid across the insert slot of a dollar bill
validator for a vending machine to prevent removal of an inserted
dollar bill during the validation and vending process. The door
also closes the coin slot to prevent the insertion of coins after a
dollar bill has been inserted. A locking arrangement is provided to
prevent opening of the door until the dollar bill has been
validated and transported to the cashbox. Once the vend of
merchandise has been completed, the locking arrangement releases
the door permitting the door to slide open for subsequent
insertions of coins or dollar bills.
Inventors: |
Jensen; Herman George (Chicago,
IL) |
Assignee: |
The Seeburg Corporation of
Delaware (Chicago, IL)
|
Family
ID: |
23036833 |
Appl.
No.: |
05/271,731 |
Filed: |
July 14, 1972 |
Current U.S.
Class: |
194/206;
194/351 |
Current CPC
Class: |
G07F
7/04 (20130101); G07F 1/02 (20130101) |
Current International
Class: |
G07F
7/00 (20060101); G07F 1/00 (20060101); G07F
7/04 (20060101); G07F 1/02 (20060101); G07f
001/02 (); G07f 007/04 () |
Field of
Search: |
;194/4R,4A-4G,DIG.20,1E,1R ;209/111.6,111.7,111.8,DIG.2
;133/1R,2 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Tollberg; Stanley H.
Assistant Examiner: Bartuska; Francis J.
Attorney, Agent or Firm: Kirkland & Ellis
Claims
I claim:
1. In a coin and dollar bill operated vending machine having coin
receiving and totalizing means, dollar bill receiving and
validating means, a cashbox for receiving coins and dollar bills
inserted into the vending machine, and vending means for initiating
the delivery of merchandise from the vending machine, and improved
escrow and security device comprising:
a door, said door adapted to be manually actuated to move to a
closed position thereby closing access to the coin receiving means
and to the dollar bill receiving means;
locking means for locking said door in the closed position when
said door is moved to the closed position after a dollar bill has
been inserted into the dollar bill receiving means;
initiation means for initiating operation of the validating means
in response to insertion of a dollar bill into the dollar bill
receiving means and in response to the movement of said door to the
closed position;
transport means for transporting a dollar bill to the cashbox in
response to validation of the dollar bill by the validating means;
and
vend start means for initiating operation of the vending means to
deliver merchandise to a purchaser in response to said transport
means transporting the dollar bill to the cashbox and for
terminating operation of said locking means so that said door may
move to an open position;
disabling means for preventing operation of said locking means and
said initiating means when a coin is inserted into the coin
receiving and totalizing means.
2. An escrow and security arrangement as claimed in claim 1 and
further comprising return means for terminating operation of said
locking means, initiating means and transport means before
operation of said vend start means in response to purchaser
stimulus so that a purchaser may retrieve deposited coins or dollar
bills before initiation of operation of the vending means to
deliver merchandise.
3. An escrow and security arrangement as claimed in claim 1 wherein
said locking means comprises a pivotably mounted lever member, said
lever member mounted so that a first end thereof will engage and
lock said door when said lever member is pivoted in response to the
insertion of a dollar bill into the dollar bill receiving means and
said door is moved to the closed position.
4. An escrow and security arrangement as claimed in claim 1 wherein
said initiating means comprises initiating switch means operable to
provide electrical power to the validating means in response to
insertion of a dollar bill into the dollar bill receiving means and
movement of the door to a closed position.
5. An escrow and security arrangement as claimed in claim 1,
wherein said transport means comprises:
rotatable roller means for contacting and moving the dollar bill
when said roller means are rotated;
motor means operably connected to said roller means to rotate said
roller means in response to validation of the dollar bill by the
validating means.
6. An escrow and security arrangement as claimed in claim 1,
wherein said vend start means comprises:
vend switch means operable in response to the transport means
transporting a dollar bill to the cashbox, said vend switch means
for completing an electrical circuit to the vending means when
operated to initiate operation of the vending means.
7. An escrow and security device as claimed in claim 1 wherein said
disabling means comprises:
disabling switch means for terminating electric power to the
locking means, and initiating means, when said switch means is
opened;
coin and follower means for opening said disabling switch means in
response to coins being inserted into the coin receiving and
totalizing means.
8. In a coin and dollar bill operated vending machine having coin
receiving and totalizing means, dollar bill receiving and
validating means, a cashbox for receiving coins and dollar bills
inserted into the vending machine and vending means for initiating
delivery of merchandise from the vending machine, an improved
escrow and security device comprising:
a door, said door adapted to be actuated to move to a closed
position thereby closing access to the coin receiving means and the
dollar bill receiving means;
locking means for locking said door in the closed position when
said door is moved to the closed position after a dollar bill has
been inserted into the dollar bill receiving means;
initiating means for initiating operation of the validator in
response to insertion of a dollar bill into the dollar bill
receiving means and in response to the movement of said door to the
closed position;
vend start means for initiating operation of the vending means to
deliver merchandise to the purchaser in response to the validating
means validating a dollar bill inserted into the receiving
means;
transport means for transporting the dollar bill to the cashbox in
response to the delivery of merchandise by the vending means;
and
disabling means for preventing the operation of said locking means
and said initiating means when a coin is inserted into the coin
receiving and totalizing means.
9. An escrow and security device, as claimed in claim 8, and
further comprising return means for terminating operation of said
locking means, initiating means, and transport means before
operation of said vend start means in response to purchaser
stimulus so that a purchaser may retrieve deposited coins or dollar
bills before the initiation of operation of the vending means to
deliver merchandise.
10. An escrow and security arrangement for use in combination with
a dollar bill validator for a vending machine, the validator
comprising a sensing head for determining the authenticity of the
dollar bill, said escrow and security arrangement comprising:
receiving means for receiving and retaining the inserted dollar
bill, the validator being adjacent said receiving means;
coin receiving and totalizing means for receiving and totalizing
inserted coins;
a door, said door adapted to be manually actuated to move to a
closed position to close access to said receiving means and said
coin receiving means after a dollar bill is inserted into said
receiving means;
locking means for locking said door in the closed position in
response to the insertion of a dollar bill into said receiving
means;
initiation means for initiating operation of the validator in
response to insertion of a dollar bill into said receiving means
and in response to the movement of said door to the closed
position;
transport means for transporting a dollar bill to a cashbox in the
vending machine in response to the validator determining the
authenticity of the inserted dollar bill; and
vend means for initiating the vending of merchandise from the
vending machine and for terminating operation of said locking means
so that the door may move to an open position in response to the
transporting of a dollar bill by said transport means;
disabling means for preventing operation of said locking means and
said initiating means when a coin is inserted into the coin
receiving and totalizing means.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to dollar bill receiving mechanisms for
vending machines, and more particularly, to a device for securely
retaining an inserted dollar bill in escrow pending validation of
the dollar bill in a coin and dollar bill operated vending
machine.
2. Description of the Prior Art
Coin and dollar bill operated vending machines are well known to
the art. The recent development of means for automatically
authenticating the validity of dollar bills has provided a
tremendous flexibility to the operation of vending machines. No
longer is it necessary for the purchaser to have coins to make
purchases from a vending machine, and now purchases totaling one or
more dollars may be accomplished by a vending machine without
inconvenience.
However, the introduction of equipment making it possible to
utilize paper currency in vending machines has caused problems. In
particular, because of the basic differences between the validation
process for coins as opposed to currency, it is necessary to
provide an escrow arrangement so that the inserted currency is held
in escrow pending the validation of the authenticity of the bill
and pending a determination by the machine that the desired
merchandise is available for delivery. If the currency proves to be
counterfeit or of the wrong denomination, or if the desired
merchandise is not available in the machine, the currency is
returned from escrow to the purchaser. However, since currency is
usually inserted into the vending machine through a receiving slot
so that one edge of the bill is available to retrieve the bill if
the bill is returned for any reason, it is necessary to provide
some form of security arrangement to prevent the unauthorized
removal of the bill after validation and the vending process has
commenced. Thus, the security arrangement should permit the
purchaser to retrieve inserted currency only if an appropriate
return button is actuated which terminates further operation of the
vending machine, if the desired merchandise is not available, or if
the currency is determined to be counterfeit or of the wrong
denomination. The security arrangement should also provide means
for terminating the further operation of the vending process if a
dishonest or unscrupulous purchaser circumvents the other security
devices and retrieves the inserted currency prior to delivery of
the merchanidse.
Another problem experienced by prior art vending machines which are
operated by both coins and currency results when both currency and
coins are inserted simultaneously into the vending machine. Prior
art vending machines which are not adapted for simultaneous
insertion of currency and coins may inaccurately total the amount
of coins and currency inserted thus either charge less than the
required price for the item purchased or more than the required
price. Thus, it is desirable to provide a means for preventing the
simultaneous insertion of coins and currency into the vending
machine.
SUMMARY OF THE INVENTION
An escrow and security device in accordance with the present
invention is used in conjunction with a coin and dollar bill
operated vending machine. The vending machine generally includes
coin receiving and totalizing means, dollar bill receiving and
validating means, a cashbox for receiving the coins and dollar
bills inserted into the vending machine and vending means for
initiating the delivery of merchandise from the vending machine to
the purchaser in response to customer selection and insertion of
the correct denomination of coins or currency.
An improved escrow and security device for use in conjunction with
a coin and dollar bill operated vending machine comprises a door
adapted to be manually actuated by the purchaser to move the door
to a closed position thereby closing access to the coin receiving
means and to the dollar bill receiving means after the dollar bill
has been inserted. Locking means are provided for locking the door
in a closed position when the door is moved to the closed position
after a dollar bill has been inserted into the dollar bill
receiving means. Initiating means is provided for initiating
operation of the validating means is response to insertion of a
dollar bill into the dollar bill receiving means and in response to
the movement of the door to a closed position. Once the dollar bill
has been validated, transportation means are provided to transport
the dollar bill to the cashbox. Vend start means is provided for
initiating operation of the vending means to deliver merchandise to
the purchaser in response to the transporting of the dollar bill by
the transporting means. Operation of the vend start means also
terminates operation of the locking means so that the door may be
moved to an open position for subsequent purchases.
Thus, when the door is in its closed position, access to the
inserted currency is prevented thereby preventing the unauthorized
removal of the inserted currency prior to or during the vending
process. Also, the door closes access to the coin receiving means
thereby preventing simultaneous insertion of both currency and
coins into the vending machine.
Also provided is an appropriate return means for terminating
operation of the locking means, initiating means, and transport
means before the vending operation is commenced in case the
purchaser changes his mind and wishes the return of the inserted
coins or currency. However, once the vending process has commenced,
the inserted currency is transported to the cashbox and cannot be
returned.
A disabling means may also be provided to prevent operation of the
locking means and the initiating means when coins are inserted in
the vending machine before the dollar bill is inserted. In
addition, as pointed out above, the door closes access to the coin
receiving means when it is locked by the locking means, thus
preventing the insertion of coins after a dollar bill has been
inserted and the door is locked in its closed position.
The present invention prevents the unauthorized removal of the
inserted dollar bill during the validation and vending process. The
door, when locked in a closed position, prevents access to the
inserted dollar bill by closing access to the dollar bill receiving
means until the validating means causes the initiating means to
initiate delivery of merchandise and transport means transports the
dollar return to the cashbox. Once the dollar bill is in the
cashbox the door is unlocked for subsequent insertions of
bills.
Another embodiment of the present invention would hold the dollar
bill in escrow until completion of the vend operation and transport
the dollar bill to the cahsbox only upon delivery of the vended
merchandise. Thus, if for any reason whatsoever, the merchandise is
not available for delivery, the purchaser would be able to retrieve
the inserted currency by actuation of the return button.
Accordingly, it is an object of the present invention to provide an
improved escrow and security device for coin and currency operated
vending machine wherein access to an inserted dollar bill is
prevented after insertion of the bill and during the validation and
vending process to prevent the unauthorized removal of currency
inserted into the vending machine.
Yet another object of the present invention is to provide an escrow
and security device for coin and currency operated vending machines
having a door adapted to be slid across the coin and currency
insert openings to initiate operation of the vending machine and to
prevent access to the coin and currency openings during the
validation and vending process.
Yet another object of the present invention is to provide an
improved escrow and security device for coin and currency operated
vending machines wherein the operation of the vending machine is
terminated when the door is opened prior to completion of the
vending operation.
These and other objects, advantages, and features of the subject
invention will hereinafter appear, and for the purposes of
illustration, but not of limitation, exemplary embodiments of the
present invention are illustrated in the accompanying drawings.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is an upper right front perspective view of the exterior
portion of a vending machine having the present invention
incorporated therein.
FIG. 2 is a block and schematic diagram of one embodiment of the
present invention.
FIG. 3 is a block and schematic diagram of an alternative
embodiment of the present invention.
FIG. 4 is a block and schematic diagram of a coin credit disabling
mechanism for use in connection with the FIG. 2 embodiment.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
With reference to FIGS. 1 and 2, a coin opening 10 and a dollar
bill opening 12 are formed in the front face 14 of a coin and
currency operated vending machine (not shown). A door 20 is
slidably positioned behind front face 14, and a knob 22 attached to
door 20 extends through vertical slot 16 in the front face 14. Also
attached to the back of door 20 is locking flange 24. Positioned
immediately behind dollar bill opening 12 are dollar bill guides 26
and 28. A dollar bill inserted into dollar bill opening 12 is
received between dollar bill guides 26 and 28 and properly aligned
under validating sensing head 30. Rollers 32 are mounted beneath
and extend through dollar bill guide 26, and are operably connected
to motor 40. Rollers 32 engage and transport the inserted dollar
bill between guides 26 and 28 to an internal cashbox (not shown)
when motor 40 is operated. Pivotably mounted by pin 34 is latching
member 36. Attached to latching member 36 is spring member 38 which
tends to pivot latching member 36 in a clockwise direction.
A source of 25 volts alternating current is provided to the
circuitry illustrated in FIG. 2 across points A and B. Point A is
connected to return switch 50 by line 52. Return switch 50 is
normally closed and is connected by line 54 to the center poll 56
of microswitch 58. Center poll 56 of microswitch 58 is normally
closed with respect to contact 60 and normally opened with respect
to contact 62. When a dollar bill is inserted between guide 26 and
28, the bill contacts arm 64 causing center poll 56 to close with
contact 62, thus breaking contact with contact 60. Contact 60 is
connected by line 66 to center poll 68 of microswitch 70. Arm 72
connected to center poll 68 is positioned adjacent the end of
guides 26 and 28 so that when a dollar bill passes out of guides 26
and 28, center poll 68 opens with respect to contact 74.
Contact 62 of microswitch 58 is connected to contact 76 of latch
switch 78 by line 80. Latch switch 78 is normally open and is
closed when flange 24 engages member 82 on the end of contact
84.
Contact 84 of latch switch 78 is connected by line 86 to one side
of latch solenoid 88 and to the anode of diode 90. The armature of
latch solenoid 88 is connected to the lower end of latching member
36 so that actuation of latch solenoid 88 causes latching member 36
to pivot to the position shown by the dotted lines in FIG. 2. The
cathode of diode 90 is connectd in parallel to one side of resistor
92 and bill position switch relay 94.
Capacitor 96 is connected in series with resistor 92 across both
sides of bill position switch relay 94, and in turn is connected to
one side of latch solenoid 88 by line 98. Line 98 and latch
solenoid 88 are connected to voltage line 100 which is connected to
voltage terminal B of the 25 volt AC power source (not shown).
Provided on line 100 are jacks 102 and 104 which may be
disconnected so that the coin disabling means illustrated in FIG. 4
(more fully described hereinafter) may be connected in series.
Bill position switch relay 94 is operably connected to the poles
106 and 108 of bill position switch 110. Actuation of bill position
switch relay 94 closes pole 106 against contact 112 and pole 108
against contact 114. Contact 114 is connected to voltage line 100
by line 116 and contact 112 is connected to contact 74 of
microswitch 70 by line 118. Pole 106 of bill position switch 110 is
connected by line 120 to the vend circuits 121 (designated by a
rectangular box). Pole 108 of bill position switch 110 is connected
to one side of validating sensing head solenoid 122 by line 124.
The other side of validating sensing head solenoid 122 is connected
by line 126 to voltage line 54.
Validating sensing head 30 is connected by lines 126 and 128 to
solid state amplifier 130. Solid state amplifier 130 is connected
to voltage line 100 by line 132 and to one side of motor 40 by line
134. The opposite side of motor 40 is connected to voltage line 54
by line 136.
To operate the FIG. 2 embodiment, a dollar bill is inserted between
guides 26 and 28 and door 20 is moved upwardly to a closed position
as shown by the dotted lines thus closing dollar bill opening 12.
When the dollar bill is inserted between guides 26 and 28, it
contacts arm 64 of microswitch 58 thus closing center pole 56 and
contact 62. When flange 24 contacts member 82 and causes latch
switch 78 to close, a circuit is completed from voltage terminal A
to voltage terminal B through return switch 50, microswitch 58,
latch switch 78, and latch solenoid 88 and bill position switch
relay 94 in parallel. Thus, latch solenoid 88 is actuated to pivot
latching member 36 to position shown by the dotted lines to engage
flange 24 locking door 20 in an elevated closed position. Also,
bill position switch relay 94 closes poles 106 and 108 of bill
position swich 110. When pole 108 of bill position switch 110 is
closed, a circuit is completed from voltage line 100 through
validating sensing head solenoid 122 to voltage line 54. This
causes validating sensing head solenoid 122 to actuate to move
validating sensing head 30 across the face of the dollar bill
inserted between guides 26 and 28. Validating sensing head 30 may
either by a conventional magnetic ink sensing head or a
conventional light operated sensing head for determining the
authenticity of the bill inserted between guides 26 and 28.
If the dollar bill inserted is valid, a signal is conveyed through
lines 126 and 128 to solid state amplifier 130 which operates to
close an internal switch (not shown) in solid state amplifier. This
completes a circuit from line 132 to line 130 thus applying voltage
from lines 100 and 54 across motor 40. Motor 40 then operates to
cause rollers 32 to transport the inserted bill out of guides 26
and 28 (from left to right as shown in FIG. 2) to a cashbox (not
shown) in the vending machine.
As the dollar bill is transported out of guides 26 and 28 the bill
contact arm 72 of microswitch 70 thus opening the circuit between
center pole 68 and contact 74. When the dollar bill clears arm 64,
microswitch 58 returns to its normal position with center pole 56
in contact with contact 60 thus breaking the circuit to latch
solenoid 88 and bill position switch relay 94. However, the
combination of resistor 92 and capacitor 96 across bill position
switch relay 94 acts as a time delay circuit to hold bill position
switch relay in an actuated condition maintaining bill position
switch 110 in a closed position for a short period of time after
the circuit is broken. Capacitor 96 is large enough to hold bill
position switch 110 in a closed position unitl the dollar bill
clears arm 72 and center pole 68 closes with contact 74. Thus, a
circuit is completed from voltage line 54 through microswitch 58,
microswitch 70, bill position switch 110 to the vend circuits 121
which causes the selected item to be dispensed to the
purchaser.
If at any time prior to the completion of the validating process,
the purchaser wishes not to make a puchase and to retrieve the
inserted dollar bill, the purchaser can press the return button 18
which opens return switch 50 thereby breaking the circuit from
voltage source A to the latch solenoid 88 and bill position switch
relay 94. Thus unlocks door 20 and breaks the circuit to the bill
position switch relay 94 which prevents operation of the sensing
head relay 122 and the vend circuits 121.
A coin disabling mechanism for use in conjunction with the
embodiment shown in FIG. 2 is illustrated in FIG. 4. Coin disabling
means 150 generally comprises escapement wheel 152 pivotably
mounted for rotation around a shaft 154. Provided on escapement
wheel 152 is cam surface 156 which engages follower 158 when
escapement wheel 152 is rotated. Follower 158 is operably connected
to switch 160 so that switch 160 is open when escapement wheel 152
is rotated in a clockwise direction past its first position. Switch
160 is connected to jacks 102 and 104 on line 100 as shown in FIG.
2. Thus, the opening of switch 160 breaks the circuit from voltage
source B to latch solenoid 88 and bill position switch relay 94.
Escapement wheel 152 is operably connected to solenoid 162 so that
when solenoid 162 is actuated, escapement wheel 152 is rotated one
increment. Increments 1, 2, 3, 4, 5, 6, and 7 represent nickel
increments of coins inserted into the vending machine. Thus, if a
quarter is inserted, escapement wheel 152 rotates to position 5.
Solenoid 162 is connected to coin totalizer circuits 164. Coin
totalizer circuits 164 operate upon the insertion of various
denominations of coins to totalize the amount of coins inserted and
to actuate solenoid 162 to rotate escapement wheel 152 an
appropriate number of increments. Thus, if any coins are inserted
into the vending machine, escapement wheel 152 is rotated so that
follower 158 opens switch 160 breaking the circuits to the latch
solenoid 88 and the bill position switch relay 94 to prevent
operation of those circuits. Escapement wheel 152 is also operably
connected to release solenoid 166 so that actuation of release
solenoid 166 releases escapement wheel 152 permitting it to rotate
back to the first position. Release solenoid 166 is electrically
connected to the vend circuit so that completion of the vend causes
actuation of release solenoid 166.
FIG. 3 illustrates an alternative embodiment of the present
invention, the operation of which is substantially the same as the
FIG. 2 embodiment except that the dollar bill is held in escrow
between guides 26 and 28 until completion of the delivery of the
merchandise to the purchaser.
With reference to FIG. 3, a voltage source of 25 volts AC is
applied across terminals A and B. This voltage is applied through
return switch 200 to the center poles 202 and 204 of microswitches
206 and 208 respectively. When a dollar bill is inserted between
guides 26 and 28, arm 210 of microswitch 206 causes center pole 202
to close with contact 212 of microswitch 206 completing a circuit
through latch switch 78, latch solenoid 88, bill position switch
relay 94 to voltage source B in the same manner as previously
described with respect to the FIG. 2 embodiment. Latch solenoid 88
operates to pivot latching member 36 to clock the door 20 in a
closed position over dollar bill opening 12 as illustrated by the
dotted lines in FIG. 3. Also, bill position switch relay 94
operates to close both poles of bill position switch 110. The
closing of pole 106 of bill position switch 110 completes a circuit
from voltage terminal A through validating sensing head solenoid
122 to voltage terminal B. This causes validating sensing head 30
to be moved across the face of the dollar bill inserted between
guides 26 and 28. If the bill is authentic, a signal is then
conveyed to solid state amplifier 130 which causes the closing of
an internal switch (not shown) in solid state amplifier 130 to
complete a circuit from terminals A and B to vend solenoid 220
through lines 214 and 218. This causes vend solenoid 220 to close
switch 222 completing a circuit through line 224, bill position
switch 210, line 226, switch 222 and line 228 to the vend circuits
121. The completion of this circuit causes vend circuits 121 to
deliver the selected merchandise. If the selected merchandise is
available and is delivered, vend circuits 121 cause poles 232 and
234 of switch 230 to close. The closing of pole 232 of switch 230
completes a circuit from voltage source A through motor 40 to
voltage source B causing motor 40 to rotate rollers 32 to move the
inserted dollar bill through guides 26 and 28 to the cashbox (not
shown).
Also included in the FIG. 3 embodiment is a coin disabling means
240 which operates substantially the same as the coin disabling
means 150 illustrated in FIG. 4. When coins are inserted into the
vending machine, coin totalizer circuits 242 cause solenoid 244 to
index escapement wheel 246 one increment for each five cent
denomination of coins inserted into the vending machine. Escapement
wheel 246 has provided thereon a cam surface 248 which engages
follower 250 when escapement wheel 246 is rotated to open switch
252. When switch 252 is opened, the circuit from latch solenoid 88
and bill position switch relay 94 to voltage source B is broken
preventing the operation of these circuits. Consequently, if coins
are inserted into the vending machine before a dollar bill is
inserted into the vending machine, the dollar bill validating
circuits are rendered inoperative.
Return button 18 is operably connected to the return switch 260.
When return button 18 is pressed, pole 262 opens with respect to
contact 264 thereby breaking the circuit from voltage terminal A
releasing latch solenoid 88 so that door 20 can drop and the
inserted dollar bill can be retrieved. Also, actuation of reutrn
button 18 causes pole 266 to open with respect to contact 268 and
close with respect to contact 270. The closing of pole 268 with
contact 270 completes a circuit from voltage terminal A through
release solenoid 236 to voltage terminal B which releases
escapement wheel 246 to permits it to return to its starting
position. Thus, the return button 18 operates to permit the return
of inserted dollar bills, and also operates to return the coin
totalizing escapement wheel to its starting position so that switch
252 is closed. Consequently, a dollar bill may be inserted into the
vending machine and validated for vending purposes. Also, when the
vend circuits 121 complete the delivery of vended merchandise, pole
234 of switch 230 is closed thereby completing a circuit from
voltage terminal A through release solenoid 236 to voltage terminal
B thereby returning escapement wheel 240 to its starting
position.
* * * * *