A throw-in coin discriminator is shown which includes a hopper to receive the coins to be discriminated. From the hopper a conveyor conveys the coins to a coin handling mechanism. A roller unstacks any stacked coins. The unstacked coins are deposited on a second conveyor which is traveling at a faster speed to singularize the coins. The coins pass a series of detectors to determine, for example, whether the coins are genuine or counterfeit. The coin handling mechanism directs authentic coins in a first direction and counterfeit coins in a second direction.

FIELD OF THE INVENTION 
This invention relates to an apparatus for distinguishing and 
discriminating coins electronically. 
BACKGROUND 
In the prior art, various types of throw-into-type coin discriminators have 
been developed. For example, as disclosed in the specification of Japanese 
patent application 8-174064 (see Japanese patent disclosure 9-319913) by 
this applicant. In the throw-into-type coin discriminator as shown in FIG. 
6, various kinds or classifications of coins are fed into a hopper 9 which 
is in the shape of a trumpet. These coins pass through a long hole open in 
the bottom of the hopper 9 and are conveyed out of the hopper by an 
endless flat belt. The width of the hole in the bottom of the hopper 9 is 
formed taking into account the diameter of the largest coin to be handled, 
for example, a 500 Yen coin. Therefore, the various classifications of 
coins thrown into the hopper 9 are conveyed in a row. The plurality of 
coins conveyed in the row is leveled so that there may be no overlap or 
stacking of coins by an inverse roller 13 which rotates in reverse to the 
direction of travel of the flat belt. The coins flattened in the row on 
the conveyer from the hopper 9 are deposited onto another endless flat 
belt 7. Since this flat belt 7 travels at faster velocity than the first 
flat belt, the coins which have been flattened or unstacked are conveyed 
and separated by the second flat belt 7, the coins having been 
singularized or placed on the belt one by one. Each coin is dropped from 
the flat belt 7 one by one into the coin selector 20 through the slot hole 
27 such that the coins are dropped in a standing up condition, i.e. on 
edge. The coin drops inside the selector 20 according to its weight and 
type having previously been judged electronically as hereinafter 
described. 
With continuing reference to FIG. 6, the coin is sent from the selector 20 
dropping by its weight as arrives along a long rail 31 in a standing up, 
on edge condition. 
SUMMARY OF THE INVENTION 
The invention is developed for the purpose of providing an integration of 
means to align thrown-into coins, means to distinguish the authenticity 
and type or classification of the coins, and means to receive an authentic 
coin and to reject the counterfeit coin. In other words, the invention has 
a purpose to align different kinds of thrown-into coins, distinguish the 
authenticity and money type of each coin and reject counterfeit coins 
while receiving authentic coins. 
Toward this end, a coin discriminator apparatus is set forth which includes 
a housing having at one end a hopper to receive coins. A conveyer is 
adapted to convey coins from the hopper to a coin handling mechanism. 
Means are provided to singularize the coins on the conveyer; that is, 
position them on the conveyer in a row, one by one. Sensors are disposed 
to sense, for coins as they are conveyed toward the coin handling 
mechanism, at least one physical aspect of each coin to determine one 
class of coins from another. For example, the sensors may be adapted to 
sense the diameter, thickness and material of composition of the coins as 
they are conveyed. At the coin handling mechanism, a coin determined to be 
of one class, e.g. authentic, is directed in a first direction, and a coin 
determined to be of another class, e.g. counterfeit, is directed in a 
second direction. For example, a coin determined to authentic would be 
directed into the selector 20 (FIG. 6) for sorting or further 
discrimination.

DESCRIPTION 
Turning to the drawings, the throw-into-type coin discriminator is shown. 
The main body of the discriminator is large and is formed in the shape of 
a long box. On the left of the long box shape, a hopper 11, which may be 
U-shaped is provided. The coins to be discriminated are thrown into the 
hopper 11. An endless belt 12 at the bottom of the hopper 11 has a large 
width and is tensioned at the bottom of the hopper 11. As shown on the 
drawings, the thrown-into-coins are conveyed rightwardly. While the 
details of the belt 12 are not shown, it is to be understood that it is 
rotated by a motor 11 which can rotate in forward and reverse directions. 
Two sensors 14 for coin or metal are arranged under the coin conveying 
surface of the belt 12 as shown in FIGS. 1 and 2. That is, if a coin is 
thrown into the hopper 11, any one of the two sensors 14 will detect the 
coin and will output a start signal to the motor 13. The motor 13 starts 
as a result of the start signal and as a result the belt 12 is actuated 
and the coins will be conveyed rightwardly as shown in the drawings from 
the hopper 11. The edge 11A of the lower opening of the hopper 11 forms a 
guide which is slanted to the travel direction of the belt 12 and aligns 
the coins in a row as a result. 
On the upper part of the coin discriminator, i.e. on the right end of the 
belt 12 (FIGS. 1 and 2) a reverse roller 15 is provided. The roller 15 
unstacks and breaks down overlapping coins on the belt 12 and puts the 
coins in a row in sheet form on the belt 12. 
Near the right side upper part of the coin discriminator near the right end 
of the belt 12, an endless second belt 16 having a large width is 
tensioned and the coins are conveyed rightwardly thereby as shown in the 
drawings. The second belt 16 is rotated normally by a motor 17 the details 
of which have been omitted herein. The belt velocity of the second belt 16 
is faster than the velocity of the belt 12. As a result, the coins which 
where in a row and sheet on belt 12 are singularized and separated onto 
the second belt 16 to be arranged one by one. 
Under the coin conveying surface of the second belt 16 on one side a 
discriminator, sensors 18 are arranged in four locations. On the other 
side of the discriminator sensors 18 are arranged in a like fashion in a 
cover 19 for the second belt 16 as shown in FIGS. 1 and 2. These four 
discriminating sensors 18 are for distinguishing the diameter, thickness 
and two kinds of materials or two metals of the coins being conveyed. 
To direct the coins on the second belt 16 to the sensors 18, a diagonal 
reference line 70 is formed on the upper surface of the second belt 16. 
The reference line 70 guides the coins on the second belt 16 as they 
approach the discriminating sensors 18. The reference line 70 provides a 
staggered groove (not shown) for example, on the interior of the cover to 
direct and align the coins to direct and align the coins to pass for 
sensing by the sensors 18. 
Near the right end of the second belt 16, a long and slender selection 
roller 21 is provided. This selection roller 21 is operated by whether the 
coin is genuine or counterfeit. It is operated to discriminate the coins 
by a solenoid 24 and a pivot arm 22 for a pivot length 23. The selection 
roller 21 need not be a roller and may be in any other form which can 
guide an authentic coin in a first direction. At the right hand side of 
the selection roller 21 a small, thick sending roller 25 is arranged. The 
sending roller 25 sends out a genuine coin from the right hand side to the 
selector 20. If the coin is determined to be counterfeit, the second 
roller 25 becomes a stop body. 
Disposed under the selection roller 21 is a rejection board 26 (FIG. 5) 
which is diagonally arranged. The rejection board 26 is usually projected 
as shown on the drawings and is drawn into the apparatus by a solenoid 
(not shown) when it is required to direct a rejected, counterfeit coin. 
Additionally, at the upper and lower positions near the sending roller 25 
are two sets of sensors 27 for detecting the passage of an authentic coin. 
The two sets of sensors 29 for detecting the passage of a counterfeit coin 
are arranged at the right and left positions under the sending roller 25. 
The sensors 27 and 29 have two sets, respectively. Therefore, a passage of 
a perforated coin, for example, a 5 Yen coin or a 50 Yen coin, is detected 
correctly by means of two light output beams of the sensors 27 and 29. In 
other words, in the case of perforated coins, since two pulses may be 
outputted by the sensors 27 and 29, this can be compensated with another 
beam. 
The operation of the discriminator according to the present invention will 
now be described. 
First, a multiple variety of coins are fed into the hopper 11. When the 
coins are fed into the hopper 11, the movement of the belt 12 is started 
and the coins will be conveyed in a row by the open edge 11A toward the 
sending roller 25. With reference to FIG. 3 an authentic coin C which was 
placed in the hopper 11, is guided in a standing up, on edge condition 
past the rejection board 26 which has been withdrawn to the selector 20. 
As shown by the broken lines in FIG. 5, the authentic coin collides with 
an inclined surface 28 to be directed in a first direction out to the left 
hand side of the discriminator. If the coin is determined to be 
counterfeit, as shown in FIG. 4, the rejection board 26 is positioned and 
the solenoid 24 is actuated to manipulate the link for the sending roller 
25 whereupon the counterfeit coin C (FIG. 4) drops to contact the 
rejection board 26 which directs the counterfeit coin in a second 
direction such as for collection or the like. After the determined 
counterfeit coin is rejected, and assuming that the next coin in order is 
determined to be genuine, the solenoid 24 is actuated to reposition the 
sending roller 25 to direct the genuine coin in the first direction. 
As can be appreciated, the invention can align several kinds of inserted 
coins and further can distinguish between the authenticity and money type 
of each coin. 
While I have shown and described certain embodiments of the present 
invention, it is to be understood that it is subject to many modifications 
and changes not departing from the spirit and scope of the appended 
claims.