Abstract:
Coins of different denominations can be deposited and sorted by a let off device. Sensors can determine the various denominations of the coins as the coins are translated by an endless conveying unit. Coin sorting units are positioned along the path of the coin transportation and can be activated by a control unit wherein coins can be diverted by a solenoid unit and also released through openings in guide-rails sized to the particular denomination of the coins. A detector unit can determine the passage of push units mounted on the endless conveyer unit to time the activation of the solenoids.

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to a denomination distinguishing system in a coin processing apparatus, in which coins of a plurality of denomination types, received in a bulk state, are sorted by each denomination type. Further, the present invention relates to a denomination distinguishing system in a coin processing apparatus, in which the timing for an operation of a receiving unit for receiving coins of a plurality of denomination types can be accurately controlled. Also, the present invention relates to a denomination distinguishing system for coins, wherein a receiving unit is operated in conjunction with a transport apparatus for transporting the coins. 
   2. Description of Related Art 
   The term “coin” used in the present specification includes currency coin, token, and medal, and may be in a circular shape or in a polygonal shape. In the past, a denomination distinguishing system for coin processing apparatus has been known, in which coins are moved along a predetermined route by pins mounted at appropriate pitch on a chain, and in the process to transport the coins along the transport route, counting of pulses is started when the coin passes through identifying means for identifying the denomination type. By operating a disengaging unit when the count value reaches a predetermined value, the coins are sorted to denomination types as appropriate and are held e.g., see Laid-Open Patent Application JP-A-11-328470 (FIG. 1; page 4) 
   According to the prior art as described above, the disengaging unit is operated according to a count value of pulses issued from a pulse generator. As a result, pulses may be erroneously counted due to noise or other causes. Because of the erroneous counting, the disengaging unit cannot be operated at the appropriate timing, and there has been a problem in that the coins of the appropriate denomination type cannot be classified at the appropriate position. To overcome this problem, it has been proposed to provide the denomination distinguishing unit immediately before the disengaging unit, and when the denomination type has been identified, the disengaging means is operated immediately after and the coins are sorted. However, this means that a sensor is required for each denomination type, leading to high cost, and thus cannot be adopted in a practical application. 
   SUMMARY OF THE INVENTION 
   It is an object of the present invention to provide a coin sorting system in a coin processing apparatus, which is not influenced by noise and other causes. It is another object of the present invention to provide a coin sorting system in a coin processing apparatus at low cost. 
   To attain the above objects, the coin sorting system for a coin processing apparatus according to the present invention is provided as a denomination distinguishing system for a coin processing apparatus, wherein coins of a plurality of denomination types are sorted one by one in a let-off device, coins are transferred to pushing unit mounted on an endless unit with a predetermined spacing, the coins are then transported through the transport route by said pushing unit, the coins are sorted at the coin sorting units according to the denomination types by a denomination distinguishing unit. The coin processing apparatus further comprises a detector unit for detecting said pushing unit arranged at a predetermined position in the advancing route of said pushing unit, coin receiving units are arranged at coin sorting units as appropriate. A control unit for operating said receiving unit according to a denomination type signal from said denomination distinguishing unit and a detection signal from said detecting unit. 
   According to the arrangement as described above, the coins are sorted one by one by the coin let-off device. Then, the coins are stopped by the pushing unit of the advancing unit and are transported along the transport route as appropriate. During the above process, a denomination type of each coin is identified by the denomination distinguishing unit. Also, the pushing unit for transporting coins is detected by the detector unit each time the coin passes through. The distance from the denomination distinguishing unit to the sorting unit of the denomination type is determined in a single operation. By counting a detecting signal from the detector unit, it is possible to set the timing for operation of the receiving unit for the denomination type. Because the receiving unit is operated according to the detection of the pushing unit of the advancing unit, erroneous counting does not occur. Also, the detector unit is common to all types of pushing units, and only one type of detector unit is required. This contributes to a cost reduction. 
   A denomination distinguishing system for a coin processing apparatus, wherein coins of a plurality of denomination types are sorted one by one in a let-off device, coins are transferred to pushing units vaunted on an endless unit with a predetermined spacing, the coins are then transported through a transport route by said pushing units. The coins are sorted according to each denomination type at a coin sorting unit for each denomination type. The coin processing apparatus comprises a slanting section when said advancing unit advances from said let-off device obliquely upward, a first horizontal section following after said slanting section and arranged approximately in a horizontal direction, a vertical section following after said first horizontal section and arranged approximately in a vertical direction, a second horizontal section following after said vertical section and positioned above said first horizontal section and arranged approximately in a horizontal direction. 
   Coin sorting units are positioned along a route from said second horizontal section to said let-off device and arranged to face said first horizontal section and said second horizontal section. Coin receiving units for catching coins are arranged at least for each one of said coin sorting units. Coins are stopped by said pushing units and transported by said advancing unit. Denomination distinguishing units are arranged to face the coin route of said slanting section and for detecting features of the coins. 
   A detector unit detects the pushing unit arranged to face the advancing route of said pushing unit of said second horizontal section and for detecting said pushing units, and a control unit for controlling the receiving operation of said receiving units according to a feature signal from said denomination distinguishing units and a detection signal from said detector unit for detecting said pushing units. In this system, coins are sorted one by one by the coin let-off device. Then, the coins are stopped and caught by the pushing units of the advancing unit, and the coins are transported along the transport route as appropriate. The transport route comprises a slanting section, a first horizontal section, a vertical section, a second horizontal section, and a circulating route leading from said second horizontal section to the let-off device. 
   During this process, the features of each coin are detected by the denomination distinguishing units arranged at the slanting section, and denomination type of each coin is identified by the denomination distinguishing units. The pushing unit contacts the coins and transports the coins in the appropriate direction as the advancing unit advances in the appropriate direction. The detector unit detects the pushing units each time the pushing unit passes through, and a detection signal is issued. The pushing unit is mounted on the advancing unit at appropriate spacing. Thus, the distance from the detector unit can be determined according to the number of pushing units. In other words, the distance from the denomination distinguishing unit to the sorting unit of each denomination type is easily determined. Thus, by counting the detection signal from the detector unit, it is possible to set the timing for operation of the receiving unit for each denomination type. Therefore, the control unit controls the operation of the receiving unit according to a feature signal from the denomination distinguishing unit and a detection signal from the detector unit. Thus, no erroneous counting occurs. Also, the detector unit is commonly used for all types of pushing units. As a result, only one detector unit is required, and this contributes to the reduction of the cost. 
   The advancing unit can be a chain comprising link plates connected by linking units, and said pushing units are integrally mounted on said linking units. 
   In the arrangement as described above, the advancing unit is a chain- The strength of the chain is very high against the advancing resistance when the pushing units pushes the coins, and the chain is not extended. Therefore, it is advantageous in that the timing for operation of the receiving unit is not deviated. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The objects and features of the present invention, which are believed to be novel, are set forth with particularity in the appended claims. The present invention, both as to its organization and manner of operation, together with further objects and advantages, may best be understood by reference to the following description, taken in connection with the accompanying drawings. 
       FIG. 1  is a schematical perspective view of a denomination distinguishing system for a coin processing apparatus according to an embodiment of the present invention; 
       FIG. 2  is a schematical front view of a coin let-off device according to the embodiment of the present invention; 
       FIG. 3  is a schematical front view of a denomination distinguishing system for the coin processing apparatus according to the embodiment of the present invention; 
       FIG. 4  is a cross-sectional view along the line A-A in  FIG. 3 ; 
       FIG. 5  is a horizontal sectional view of a fall supporting unit in the embodiment of the present invention; 
       FIG. 6  is a longitudinal sectional view of a fall supporting unit in the embodiment of the present invention; 
       FIG. 7  is a cross-sectional view of an endless unit in the embodiment of the present invention; 
       FIG. 8  is a horizontal sectional view of a receiving unit in the embodiment of the present invention; 
       FIG. 9  is a longitudinal sectional view of means for detecting the pushing means in the embodiment of the present invention; and 
       FIG. 10  is a block diagram of a control circuit of the embodiment of the present invention. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   Reference will now be made in detail to the preferred embodiments of the invention which set forth the best modes contemplated to carry out the invention, examples of which are illustrated in the accompanying drawings. While the invention will be described in conjunction with the preferred embodiments, it will be understood that they are not intended to limit the invention to these embodiments. On the contrary, the invention is intended to cover alternatives, modifications and equivalents, which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be obvious to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well known methods, procedures, components, and circuits have not been described in detail as not to unnecessarily obscure aspects of the present invention. 
   The present embodiment shows a coin processing apparatus for sorting coins of 8 different denomination types in the United Kingdom, i.e., 2 pound coin (average diameter 28.5 mm (the same applies hereinafter)), 1 pound coin (22.5 mm), 50 pence coin (27.3 mm), 20 pence coin (21.4 mm), 10 pence coin (24.5 mm), 5 pence coin (17.9 mm), 2 pence coin (26 mm), and 1 penny coin (20.3 mm). However, the present invention can be applied to coins used in other countries. 
     FIG. 1  shows a coin processing apparatus  100  used in supermarkets where customers want to settle the account by self-service. The coin processing apparatus  100  comprises a coin slot  102 , a coin selector  104 , a coin letoff device  106 , a coin transporting unit  108 , a coin sorting unit (apparatus)  110 , a coin storing unit  112 , a dispensed coin transporting unit  114 , a dispensed coin diverting unit  116 , a safe for overflowing coins  118 , and a coin discharging unit  120 . 
   First, a description will be given on the coin slot  102 . The coin slot  102  has the function to receive the coins dropped or thrown in by customers. The coin slot  102  shown in the embodiment is designed as a slit in a form of a longitudinally oblong rectangle to receive the coins one by one. 
   However, the coin slot  102  may be designed in such manner that it is changed to a receiving container in form of a bowl to receive the coins in bulk state, and after the coins are sorted and separated one by one by a sorting unit already known, the coins are thrown into a coin selector  104 . 
   Next, the coin selector  104 , shown in  FIG. 1 , will be described. The coin selector  104  is positioned under the coin slot  102 , and it has the function to identify authenticity and denomination type of the coins received through the coin slot  102  and to sort genuine or authentic coins to discriminate them from false or counterfeit coins. In the coin selector  104  shown in the embodiment, counterfeit coins are sent back to the coin dispensing unit  120  in form of a bowl via a chute (not shown). 
   The genuine coin TC is guided via a chute (not shown) into the storing bowl  122  of the coin let-off device  106 . Therefore, the coin selector  104  can be divided into three different types: an electric type coin selector to detect material, diameter and thickness of the coin by means of a plurality of oscillation coils and to compare the result with the reference value, an image type coin selector to incorporate a pattern on coin surface by means such as CCD camera and to compare it with the reference value, and a sound wave type coin selector to hit the coin and to detect sound wave issued from the coin and to compare the result with the reference value. 
   Next, the coin let-off device  106  will be described. The coin let-off device  106  has the function to sort a plurality of coins of different denomination types mixed together and to deliver them one by one. Therefore, the coin let-off device  106  may be replaced with other type of apparatus, which has a similar function. 
   The coin let-off device  106  shown in the embodiment comprises a rotating disc  124 , a recess  128  formed between projections  126 , a moving unit  130  for moving coins, and a driving unit  132  for a moving unit  130  as shown in  FIG. 2 . 
   First, description will be given on the rotating disc  124 . The rotating disc  124  has the function to move and shake up a multiple of coins and to sort them by introducing the coins one by one into a sorting recess  134  as described later. The rotating disc  124  is designed in the form of a disc. Its rotation shaft  136  is tilted at an angle of about 30 degrees to the vertical line, and it comprises an upward facing surface  138 . 
   On the upward facing surface  138 , there are provided 6 projections  126  each extending in radial direction, and a push-out disc  140  with recesses  128  positioned between the projections  126  is fixed on it. In front of the projection  126  and in rotating direction of the rotating disc  124 , a coin pushing unit  142  slightly recessed is formed. 
   Behind the projection  126 , in the rotating direction, a moving unit receiver  144 , designed in recessed form, is provided, and the moving unit  130  in arcuate form is disposed on it. The rotating disc  124  and the push-out disc  140  may be integrally molded by using sintered metal or resin having wear resistant property. 
   Next, the moving unit  130  will be described. The moving unit  130  has the function to move the coin C held in the sorting recess  134  at a predetermined position in the direction of the diameter of the rotating disc  124 . Therefore, the moving unit  130  may have other structure if the same function can be fulfilled. 
   The moving unit  130  is pivotally mounted on a pivot axis  146 , which is protruded to the moving unit receiver  144  on a peripheral edge side of the rotating disc  124 . The moving unit  130  is preferably made of metal or resin by giving full consideration on wear resistant property and mechanical strength. 
   A fan-shaped sorting recess  134  is formed by a recess  128  and an inner edge  131  of the moving unit  130 . The recess  134  is designed as a flat gap with its upper face and peripheral side in an open condition. The depth of the recess  134 , i.e. thickness of the push-out disc  140 , is formed with a thickness, which is slightly thinner than the thickness of one penny coin, i.e. the thinnest coin among 8 types of coins. 
   This is to prevent the coins from being held with two coins overlapped on each other. The recess  134  is designed in fan-shaped form. Also, a distance between inner surface of the storing ring  148  and the deepest portion of the recess  134  is set to a value less than twofold of the diameter 17.9 mm of a 5 pence coin, which has the smallest diameter. This is to prevent the coins from being held with two 5 pence coins aligned together in the recess  134 . 
   This is because the length of the recess  134  in peripheral direction and radial direction is less than twofold of the diameter of a 5 pence coin. Then the moving unit  130  is positioned on the receiving unit  144 , the moving unit  130  is positioned at the receiving position PP. The rotating disc  124  is disposed at the bottom of the storing ring  148  in cylindrical shape to hold coins. 
   On a transfer unit to the coin transporting unit  108  of the storing ring  148 , an opening  150  is formed so that coins can pass through it. A storing bowl  122  is further mounted on the storing ring  148 , and a storing section  152  is provided to face toward the rotating disc  124 . Thus, the coins thrown into the storing section  152  are guided toward the rotating disc  124 . 
   Next, description will be given on a driving unit  132  for the moving unit  130 . The driving unit  132  has the function to move the moving unit  130  from the receiving position RP to the moving position MP as appropriate. Therefore, the driving unit  132  may have a structure other than that of the embodiment if it can fulfill this function. The driving unit  132  comprises a driven unit  154  and a cam  156 . 
   First, the driven unit  154  will be described. On the rotating disc  124 , an arcuate through-hole  158  is formed around a pivot axis  146 , and a pin  160  fixed at the middle of the moving unit  130  is penetrating through the hole. At a lower end of the pin  160 , a roller  162  is rotatably mounted. This roller  162  is the driven unit  154 . 
   Next, the cam  156  will be described. The driven unit  154  is movably inserted into a ditch-like cam  166  on an upper surface of an inward facing flange  164 , which is formed in ring-like shape from an inner peripheral surface of the storing ring  148  toward the center. 
   In the ditch cam  166 , there are provided a receiving groove  168  having a partial circular shape formed around the rotation axis of the rotating disc  124 , a moving groove  170  having a diameter larger than that of the receiving groove  168  and for holding the moving unit  130  at the moving position MP, a transfer process groove  172  for a process to move from the receiving groove  168  to the moving groove  170 , and a return process groove  174 , in which the coins are sent back from the moving groove  170  to the receiving groove  168 . 
   Therefore, in case the driven unit  154  is positioned in the receiving groove  168 , the moving unit  130  is held by the receiving unit  144 , and it is at the receiving position P 2 . The recess  128  and the moving unit  130  make up together a fan-shaped sorting recess  134 . The sorting recess  134  is disposed at such a position that the bottom closest to the rotation axis  136  (the forward end of the moving unit  130  in the embodiment) is separated by a distance slightly different from a diameter of the coin with the largest diameter from an inner surface of the storing ring  148 . 
   Also, this distance is less than twofold of the diameter of the coin with the smallest diameter. In other words, the sorting recess  136  is designed in such manner that two coins with the smallest diameter cannot be aligned in line and cannot be received together in the direction of the diameter of the rotating disc  124  between the storing ring  148  and the bottom. 
   Further, the sorting recess  234  is designed in a fan-like shape, and this prevents two coins with the smaller diameter from being aligned in line and received in peripheral direction of the rotating disc  130 . In case the driven unit  154  is positioned at the transfer process groove  172 , the moving unit  130  is pivotally moved clockwise around the pivot axis  146 . 
   When the driven unit  154  is positioned in the moving groove  170 , the moving unit  120  moves to the moving position MP. Then, the driven unit  154  is positioned in the return process groove  174 . Thus, it is rotated counterclockwise around the pivot axis  146  and is sent back to the receiving position RP. 
   Therefore, the cam  156  is not limited to the ditch cam  166 . In case the ditch cam  166  is used, an auxiliary unit to move the driven unit  154  along the cam  156  is not needed. This is helpful to attain a simplified structure and contributes to more compact design and to the reduction of the manufacturing cost. 
   Next, description will be given on the coin transporting unit  108  of  FIG. 1 . The coin transporting unit  108  has the function to receive the coins C, which are sent out one by one from the coin let-off device and to transport them to the coin processing apparatus, e.g. the coin sorting units  110 . 
   The coin transporting unit  108  comprises an endless conveying unit  176 , pushing units  180  such as pins or posts mounted on the endless conveying unit  176 , and a guide plate  194  for guiding the coins C while the coins are leaning on it. The endless unit  176  is a loop unit, which can be bent such as a belt or chain, in the present embodiment, it is a chain  182  with a predetermined length. 
   As shown in  FIG. 7 , the chain  182  comprises a pair of cocoon-like inner link plates  183 A and  183 B. These link plates are separated at a given spacing with a bushing  185  sandwiched therebetween at each and of the link plates so that the link plates run in parallel to each other. On outer side of each of these inner link plates, a pair of cocoon-like outer link plates  187 A and  187 B are attached. Further, pins  189  are penetrating through the bushing  185 , through the inner link plates  183 A and  183 B, and through the outer link plates  187 A and  187 B. By securing both ends of each of the pins  189 , the inner link plates  183 A and  183 E and the outer link plates  187 A and  187 B can be bent using the pins as fulcrum. 
   Among the pins  189 , a pin  189 F positioned at a given spacing has a bar  191  to contact coins, which is projected with one end protruding in a lateral direction from the outer link plate  187 A. In other words, the bar  191  is protruding in a direction perpendicular to longitudinal direction of the chain  182 . Therefore, the linking units are the pins  189  and  189 F. 
   In the present embodiment, the bar  191  is designed in cylindrical shape, and it comprises a pushing unit  180  for pushing the coins. The endless unit  176  can be replaced with a belt. When the endless unit  176  is designed as a flat belt, projections protruding at a given spacing may be provided in the direction perpendicular to longitudinal direction of the flat belt, and these projections may be used as the pushing unit  180 . 
   When the endless conveying unit  176  is designed as a round belt, the pushing units  180  can be arranged at predetermined spacings by binding the round belt by a binder mounted at the base of the pushing unit  180 . The chain  182  is guided by a plurality of sprockets (not shown), and it circulates along an inverted L-shaped loop route as a whole. 
   Now, the route of the chain  182  will be explained. As shown in  FIG. 3 , the chain reaches a position closest to the top of the rotating disc  124  at the sprocket  184 , which is adjacent to the rotating disc  124  at the lowest position. Then, the chain goes upward at a steep angle. Subsequently, the chain advances to a first sorting unit  186  along a gently rising slope. Then, after going up in a vertical direction, the chain advances to a second sorting unit  188  along a gently rising slope at a position above the first sorting unit  186 . Finally, the chain goes down approximately in vertical direction and returns to the sprocket  184 . 
   The pushing unit  180  is positioned on the side of the chain  182  at a predetermined spacing so that it can contact and catch the coins C one by one, which are sent out from the coin let-off device  106 . As a result, the sprocket  184  and the rotating disc  124  are rotated as these two are interlocked with each other. 
   As shown in  FIG. 4 , a gear  186 , where the sprocket  184  is fixed, is engaged with another gear  188 , which is arranged under the rotating disc  124 . In other words, the gear  188  is rotatably mounted on a shaft  136  fixed on a base  190 , and the rotating disc  124  is fixed on the gear  188 . The gear  188  is engaged with the gear  186  at a lateral position, and the gear  188  is driven by an electric motor (not shown) at a predetermined speed. 
   Therefore, the rotating disc  124  and the sprocket  184  are rotated and moved at a predetermined speed ratio. In other words, the sorting recess  134  and the pushing means  180  are moved relative to each other. On an outer peripheral edge of the projection  126  of the rotating disc  124 , notches  194  are formed so that coins can be smoothly delivered from the moving unit  130  to the pushing means  180  and the pushing means  180  can enter each of the notches  194 . 
   The guide plate  194  is an L-shaped plate, which is tilted in the same manner as the rotating disc  124  of the coin let-off device  106 . The moving groove, where the pushing units  180  are fixed on the chain  182  is moved, is designed in loop-like shape on the guide plate  194 . 
   In other words, the endless unit  176  is arranged on back side of the guide plate  194 . Now, a description will be given on the shape of the moving groove  196  with the starting point at the sprocket  184 , which is arranged adjacent to the coin let-off device  106 . 
   The moving groove  196  comprises a first moving groove  196 A rising obliquely at a steep angle, a second moving groove  196 B rising at an angle of about 45°, a third moving groove  196 C rising at a gentle inclination, a fourth moving groove  196 D extending vertically upward, a fifth moving groove  196  positioned above the third moving groove  196 C and rising at slightly upward inclination toward the first moving groove  196 A. A sixth moving groove  196 F extending approximately in horizontal direction, and a seventh moving groove  196 G extending downward vertically toward the sprocket  184 . As a whole, the moving groove is in a sideways turned L-shaped configuration. 
   A coin guide in planar shape is arranged on the upward facing surface  198  of the guide plate  194 , and it guides the peripheral surface of the coin C, which is moved by the endless unit  176 . Specifically, there are provided a first coin guide  200 A facing to the lower side of the first moving groove  196 A, a second coin guide  200 E facing to the lower side of the second moving groove  1968 , a third coin guide  200 C facing to the lower side of the third moving groove  196 C, a fourth coin guide  200 D facing to left and right sides of the fourth moving groove  196 D, and a fifth coin guide  200 E facing to the lower side of the fifth moving groove  196 E. 
   The thickness of each of the first coin guide  200 A, the second coin guide  200 B, and the fourth coin guide  200 D is designed to be slightly thicker than the thickness of the thickest coin. More specifically, the thickness of each of these coin guides is designed to be slightly thicker than the thickness of a 2 pound coin, which is the thickest coin among the coins. This prevents the coins from dropping off from the coin guide when the coins C are pushed by the pushing unit  180 . 
   The thickness of each of the third coin guide  200 C and the fifth coin guide  200 E is designed to be slightly thicker than the thickness of the thinnest coin. More concretely, it is designed to be slightly thicker than the thickness of the thinnest coin. This is to promote easier dropping of the coins C under movement from the coin guides  200 C and  200 E. Therefore, the coins C which are delivered after being sorted one by one from the let-off device  106 , are contacted and caught by the pushing unit  180  and are moved along a transport route  202 . 
   Describing in more detail, the coins C are transported in the order of: a first transport route  202 A where the coins C are guided by the first coin guide  200 A and moved, a second transport route  202 B, i.e. a slanting section, where the coins are guided by the second coin guide  200 B and moved, a third transport route  202 C, i.e. a first horizontal section, where the coins are guided by the third coin guide  200 C and moved, a fourth transport route  202 D, i.e. a vertical section, where the coins are guided by the fourth coin guide  200 A and moved, and a fifth transport route  202 E, i.e. a second horizontal section, where the coins are guided by the fifth coin guide  200 E and moved. 
   A denomination distinguishing unit  204  is arranged on the second transport route  202 B as shown in  FIG. 3 . The denomination distinguishing unit  204  has the function to identify a 2 pound coin and a 20 pence coin from each other in the present embodiment. For instance, it can identify and discriminate the coins by identifying the diameter and material of the coins from the data sensed by a plurality of oscillation coils. 
   Next, a description will be given on a guiding unit  206 . The guiding unit  206  has the function to guide the coins to the coin let-off device when the coins C reach the end of the fifth transport route  202 E, i.e. the most downstream portion  208  of the transport route  202 . In the embodiment, a tube type chute  210  is provided, which guides the coins from the most downstream portion  208  of the fifth transport route  202 E positioned above the coin let-off device  106  to the storing bowl  122  of the coin letoff device  106 . 
   Specifically, the coin C slips off through the chute  120  by its own weight and is dropped into the storing section  152  of the coin let-off device  106 . Therefore, the coins C, which have not been sorted by the coin sorting unit  110 , are sent back to the coin letoff device  106  via the chute  210 , and it is transferred again from the let-off device  106  to the coin transporting unit  108 . As a result, the coins are sorted at the denomination type sorting unit or the coins are continuously circulated. 
   Next, description will be given on the coin sorting unit  110 . The coin sorting unit  110  has the function to sort the coins for each denomination type as the coins are transported along the transport route  202  by the coin transporting unit  108 . A first sorting unit  186  is provided along the third transport route  202 C. Specifically, in the first sorting unit  186 , there are provided a coin receiving unit  211 , a 5 pence coin sorting unit  216 , and a one penny coin sorting unit  218  in this order from upstream side in advancing direction of the endless unit  176  toward the downstream side. 
   The coin receiving unit  211  comprises a 2 pound coin sorting unit  212  and a 20 pence coin sorting unit  214 . The 2 pound coin sorting unit  212  comprises a diverting plate  222 , which is protruded by an actuator (e.g. solenoid)  220  at a given timing to the transport route between the third coin guide  200 C and the moving route of the pushing unit  180 . 
   More concretely, a slit  211  extending along the endless unit  176  is formed on the transport route  202 C on the guide plate  194  as shown in  FIG. 8 . On the backside of the guide plate  194 , an L-shaped diverting plate  222  is rotatably mounted at the bending portion so that it can be rotated around an axis  223 . A pin  229  fixed on a tip of a plunger  227  of the solenoid  220  is inserted into an oblong hole  225  formed on one end of the diverting plate  222 . 
   The plunger  227  is driven by a spring (not shown) so that it is compelled to protrude from the solenoid  220 . Therefore, the diverting plate  222  is pivotally moved counterclockwise in  FIG. 8 , and its forward end is retracted from the slit  221  and is positioned behind the guide plate  194 . 
   Next, description will be given on a control unit  231  as shown in  FIG. 10 . The control unit  231  can be a microprocessor or micro-controller, for instance. It receives a denomination type signal from the coin selector  104  and a timing signal from a sensor or detector unit  224  for detecting the passage of a pushing unit  180 , and issues a pulse signal. Then, based on a program stored in a ROM in advance, the solenoid  220  or the solenoid  228  is magnetized and demagnetized, see  FIGS. 1 and 8 . 
   When the solenoid  220  is magnetized, the plunger  227  is retracted. The diverting plate  222  is pivotally moved clockwise, and its tip  222 T is protruded into the transport route  202 C through the slit  221 . In this case, an inclined surface  222 S of the diverting plate  222 , which forms the tip  222 T, is tilted so that it is separated from the guide plate  194  with respect to the advancing direction of the coin. 
   After a 2 pound coin is detected by the denomination distinguishing means  204  and when a predetermined number of pulse signals, e.g., a pulse signal, is issued from the detecting unit  224 , which detects the pushing unit  180 , the solenoid  220  is magnetized for a certain period of time. When the solenoid  220  is magnetized, the diverting plate  222  is protruded into the third transport route  202 C. As a result, the 2 pound coin moving along the transport route  202 C is moved with its tip separated from the guide plate  194  due to the inclined surface  222 S of the diverting plate  222 . Thus, the coin is disengaged from the third coin guide  200 C and is dropped off downward. 
   The dropped 2 pound coin is guided through a chute (not shown) and is sent into the storing bowl of a coin hopper P 2  for the 2 pound coin as described later. The 20 pence coin sorting unit  214  comprises a solenoid  228  and a diverting plate  230  designed in the same manner as in the 2 pound coin sorting unit  212 . 
   After the coin has been identified as a 20 pence coin by the denomination distinguishing unit  204  and when two pulse signals are issued from the detector unit  224  for detecting the pushing unit  180 , the solenoid  228  is magnetized for a given period of time. When the solenoid  228  is magnetized, the diverting plate  230  is protruded into the third transport route  202 C. As a result, the 20 pence coin moving along the transport route  202 C is moved so that its tip is separated from the guide plate  194  due to the inclined surface of the diverting plate  230 . Thus, the coin is diverted from the third coin guide  200 C and is dropped off downward. 
   The dropped 20 pence coin is guided through a chute (not shown) and is sent into a 20 pence storing bowl of the coin hopper for 20 pence coins as described later. The 2 pound coins are sorted at first because 2 pound coins are bimetal coins and the easiest to sort. 
   The 20 pence coins are sorted as the second coin type to be sorted. This is because the difference of diameters between 20 pence coin and 1 pound coin is small. If tolerance of diameter of coin is taken into account and when sorting is performed mechanically according to the difference of diameters, the coins may be erroneously sorted. Also, it is because 20 pence coins are more easily sorted electrically than 1 pound coins. However, it is possible to change over the position between the 2 pound coin sorting unit  212  and the 20 pence coin sorting unit  214 . 
   The detector unit  224  for detecting pushing unit  180  is a sensor for detecting the pushing unit  180  mounted on the endless unit  176 , and it has the function to issue a pulse signal each time the passing of the pushing unit is detected. More concretely, it can comprise a channel-shaped sensor body  225 , which includes an upper bar  225 A and a lower bar  225 B arranged above and below respectively and separated by a given distance from each other as shown in  FIG. 9 . 
   A photo acceptance unit  227 A is provided on the upper bar  225 A. A light emission element  227 E is arranged on the lower bar  225 B. These elements together make up a transmission type photoelectric sensor. A projected light from the light emission element  2278  is arranged to traverse the moving route of the pushing unit  180 . Thus, when the projected light from the light emission element  227 E is interrupted by the pushing unit  180 , the pushing means  180  is detected. 
   Therefore, the detector unit  224  for detecting the pushing unit can be replaced with another type of device, which has a similar function. When the pushing unit  180  is made of metal, a proximity sensor or a contact type sensor can be used as the detector unit  224  for detecting pushing unit. When it is made of resin, a photoelectric sensor can be used. 
   Next, a description will be given on a 5 pence coin sorting unit  216 . The 5 pence coin sorting unit  216  comprises a 5 pence coin sorting opening  234  defined by a 5 pence coin edge  232 , which is arranged at a given distance from and in parallel to the third coin guide  200 C, i.e., at a position separated by a distance slightly longer than the diameter of the 5 pence coin. 
   The 5 pence coin has the smallest diameter among the coins except 2 pound coin and 20 pence coin. Because it cannot be supported by the 5 pence coin edge  232 , upper end of the 5 pence coin falls off into the 5 pence coin sorting opening  234 . Thus, lower peripheral surface of the coin is disengaged from the third coin guide  200 C and the coin drops off. Then, being guided through a chute (not shown), the coin is sent into a coin hopper  5   p  for 5 pence coin as described later. 
   In this case, the 5 pence coin may not be dropped off easily from the second coin guide  200 C because the coin is light in weight. Specifically, when the 5 pence coin C is not guided by the 5 pence coin edge  232  as shown in  FIG. 6 , the lower surface of the coin is rotated clockwise with an edge  194 E of the guide plate  194  as a fulcrum. 
   In order to prevent the coin C from dropping off into the 5 pence coin opening  234  but to allow it to drop off from the third coin guide  200 C, it should be designed in such manner that the lower peripheral surface of the coin C is disengaged from the third coin guide  200 C when the coin falls off slightly into the opening  234 . In other words, the rotation fulcrum of the coin Q i.e. the edge  194 E, must be separated by a given distance from the coin guide  200 C. 
   When this distance is long, the moment caused by selfweight of the coin is low, and the coin is very unlikely to fall off. As a result, the 5 pence coin may not be correctly sorted at the 5 pence coin sorting unit  216 . To prevent this, a fall supporting unit  235  is provided between the moving route of the pushing unit  180  and the 5 pence coin edge  232 . As shown in  FIG. 5 , the fall supporting unit  235  is designed in a triangular shape. Its inclined surface  235 S is extended in an advancing direction of the endless unit  176 , and it is arranged in such manner that it comes closer to rear surface of the third transport route  202 C as it moves downstream. 
   With the arrangement as described above, even when the distance from the third guide rail  200 C to the edge  194 E is made shorter and the moment due to self-weight of the coin is increased, lower surface of the upper end of the coin C is supported by the inclined surface  235 S of the fall supporting unit  235  as the coin is rotated by a certain degree, and the coin is prevented from dropping off from the opening  202 C. Further, the 5 pence coin supported by the inclined surface  235 S is pushed by the pushing unit  180 . As a result, the front part, in advancing direction, is rotated on the third coin guide  200 C so that it is separated from the guide plate  194 . Then, a lower surface of the central part of the 5 pence coin is disengaged from the third coin guide  200 C, and the coin is dropped off from the third coin guide  200 C. 
   Now, a description will be given on 1 penny coin sorting unit  218 . The 1 penny coin sorting unit  218  has a 1 penny coin sorting opening  238  defined by a 1 penny coin edge  236 , which is arranged at a position separated by a given distance from and in parallel to the third coin guide  200 C, i.e. at a position separated by a distance slightly longer than diameter of the 1 penny coin. A fall supporting unit  237  having a configuration similar to that of the fall supporting unit  235  is provided, and it is arranged at the same positional relationship as the fall supporting unit  235 . 
   The 1 penny coin has the second smallest diameter among the coins except 2 pound coin and 20 pence coin, and it cannot be supported by the 1 penny coin edge  236 . Thus, the upper end of the coin falls down into the 1 penny coin sorting opening  238 . As it is supported by the fall supporting unit  237 , it comes off from the third coin guide  200 C and drops off. Being guided through a chute (not shown), the coin is sent into a coin hopper  1 p for 1 penny coin as described later. 
   Next, a description will be given on a second sorting unit  188 . From an upstream side in the transporting direction of the coin transporting unit  108 , there are provided a 1 pound coin sorting unit  240 , a 10 pence coin sorting unit  242 , a 2 pence coin sorting unit  244 , and a 50 pence coin sorting unit  246  in this order. 
   Although not shown in the figure, the fall supporting unit is arranged in the same manner as described above at the opening of each of the sorting units. However, these coins have relatively larger diameters and are heavier in weight, and the fall supporting unit may not be provided. 
   First, description will be given on the 1 pound coin sorting unit  240 . The 1 pound coin sorting unit  240  comprises a 1 pound coin sorting opening  250  defined by a 1 pound coin edge  248 , which is positioned at a given distance from and in parallel to the fifth coin guide  200 E, i.e. at a position separated by a distance slightly longer than the diameter of the 1 pound coin. 
   The 1 pound coin has the third smallest diameter among the coins except the 2 pound coin and the 20 pence coin, and it is not supported by the 1 pound coin edge  248 . The upper end of the coin falls off into the 1 pound coin sorting opening  250 . Then, the coin is disengaged from the fifth coin guide  200 E. Being guided through a chute (not shown), the coin is sent into a coin hopper P 1  for 1 pound coin as described later. 
   Next, a description will be given on a 10 pence coin sorting unit  242 . The 10 pence coin sorting unit  242  has a 10 pence coin sorting opening  254  defined by a 10 pence coin edge  252  positioned at a given distance from and in parallel to the fifth coin guide  200 E, i.e., at a position separated by a distance slightly longer than the diameter of the 10 pence coin. 
   The 10 pence coin has the fourth smallest diameter among the coins except the 2 pound coin and the 20 pence coin, and it is not supported by the 10 pence coin edge  252 . The upper end of the coin falls off into the 10 pence coin sorting opening  254 , and it is disengaged from the fifth coin guide  200 E. Being guided through a chute (not shown), the coin is sent into a coin hopper  10   p  for 10 pence coin. 
   Next, a description will be given on a 2 pence coin sorting unit  244 . The 2 pence coin sorting unit  244  has a 2 pence coin sorting opening  258  defined by a 2 pence coin edge  256  positioned at a given distance from and in parallel to the fifth coin guide  200 E, i.e. at a position separated by a distance slightly longer than the diameter of the 2 pence coin. 
   The 2 pence coin has the fifth smallest diameter among the coins except the 2 pound coin and the 20 pence coin, and it is not supported by the 2 pence coin edge  256 . The upper end of the coin falls off into the 2 pence coin sorting unit  258 , and the coin is disengaged from the fifth coin guide  200 E. Being guided through a chute (not shown), the coin is sent into a coin hopper  2   p  for 2 pence coin. 
   Next, a description will be given on a 50 pence coin sorting unit  246 . The 50 pence coin sorting unit  246  has a 50 pence coin sorting opening  262  defined by a 50 pence coin edge  260  positioned at a given distance from and in parallel to the fifth coin guide  200 E, i.e., at a position separated by a distance slightly longer than the diameter of the 50 pence coin. 
   The 50 pence coin has the largest diameter among the coins except the 2 pound coin and the 20 pence coin, and it is not supported by the 50 pence coin edge  260 . The upper end of the coin falls off into the 50 pence coin sorting opening  262 , and it is disengaged from the fifth coin guide  200 E. Being guided through a chute (not shown), the coin is sent into a coin hopper  50   p  for 50 pence coin as described later. 
   Next, description will be given on a coin storing section  112 . The coin storing section  112  holds coins for each of the denomination type. When a discharge command is issued from a commanding apparatus (not shown), it has the function to discharge a designated number of coins of the designated denomination type. Therefore, the coin storing section  112  may be replaced with another device having a similar function. 
   In the present embodiment, the coin storing section  112  comprises coin hoppers P 2  to  50   p  provided for coins of different denomination types. Each of the coin hoppers P 2  to  50   p  has the function to sort the coins stored in bulk state in the storing bowl one by one and to discharge the coins to the dispensed coin transporting unit  114 . 
   The coin hoppers P 2 ,  20   p ,  5   p  and  1   p  are aligned in line to match the first sorting unit  186  and are arranged above one side of the coin transporting unit  114 . The coin hoppers  50   p ,  2 P,  10   p  and  1   p  are aligned in line to match the second sorting unit  188  and are arranged above the other side of the coin transporting unit  114 . 
   Next, a description will be given on a dispensed coin transporting unit  114 . The dispensed coin transporting unit  114  has a function to transport the coins discharged from the coin hoppers P 2  to  50   p  in a predetermined direction. 
   In the present embodiment, the dispensed coin transporting unit  114  is designed as a flat belt  264  arranged approximately in a horizontal direction between the rows of the coin hoppers. It is moved in a given direction by an electric motor (not shown) and transports the coins C discharged from each of the hoppers toward the coin dispensing unit  116 . 
   Next, a description will be given on the coin dispensing unit  116 . The coin dispensing unit  116  has the function to dispense the coins C received from the dispensed coin transporting unit  114  to a safe for overflowing coins  118  or to a coin dispensing unit  120 . 
   Only when the overflowing coins are discharged from one of the coin hoppers P 2  to  50   p , does the coin dispensing unit  116  guides the received coins C to the safe for the overflowing coins  118 . Otherwise, it guides the coins to the coin dispensing unit  120 . 
   Next, a description will be given on the safe for the overflowing coins  118 . The safe for the overflowing coins  118  has the function to hold the coins received from the dispensed coin diverting unit  116 . A change money supplying unit  266  is arranged above the coin storing section  112 . 
   The change money supplying unit  266  has the function to supply the coins in bulk state thrown in through the opening  268  to the storing bowl  122  of the coin let-off device  106 . In the present embodiment, it comprises a flat belt  270  arranged approximately in horizontal direction. When the cover of the housing is opened and a predetermined number of various types of coins are thrown in through the opening  268 , the coins are placed in bulk state on the flat belt  270 . 
   When the coins in bulk state are detected by a sensor (not shown), the flat belt  270  is moved at slow speed toward the coin let-off device  106 . When the coins C reach the end of the flat belt  270 , the coins C fall off. The coins are then guided through a chute (not shown) toward the storing section  152  of the coin let-off device  106 . 
   When a predetermined number of the coins C are detected at the storing section  152  by a sensor arranged on the coin let-off device  106 , the advancing movement of the flat belt  270  is stopped, and the supply of the coins C for change purpose is stopped. 
   When the sensor detects that the storing section  152  is empty, the flat belt  270  is moved again, and the coins C are supplied to the storing section  152 . This procedure is repeated. When there is no more coin C on the flat belt  270  or in the storing section  152 , the denomination distinguishing unit  204  does not detect the coins for a given period of time. Then, the termination of the supply of change money is notified by a non-detection signal. 
   Next, description will be given on operation of the present embodiment. After the coins C are thrown into the coin slot  102 , it is judged whether the coin is authentic or not at the coin selector  104 . Genuine or authentic coin C drops into the storing bowl  152  of the coin let-off device  106 . 
   When a sensor (not shown) detects the coin C in the storing bowl  152 , an electric motor (not shown) is driven, and the sprocket  184  is rotated. As a result, the chain  182  is moved counterclockwise at a predetermined speed as shown in  FIG. 1  and  FIG. 3 . 
   Also, the rotating disc  124  is rotated clockwise and in synchronization with the chain  182  via the gears  186  and  188 . Then, the coins, which have been inserted, slip off toward the rotating disc  124  because the bottom of the storing bowl  122  is inclined, and the coins come into contact with the rotating disc  124  and the push-out disc  140 . 
   As the rotating disc  124  is rotated, the coins C are shaken up by the projections  126  and are moved into the sorting recess  134 . The moving unit  130  is positioned in the receiving unit  144  except the position near the coin transporting unit  108 , and it is at the receiving position RP. In other words, the recess  134  is designed in a fan-shaped configuration. 
   Therefore, only one of the coins C is held in the sorting recess  134 , which is defined by a pushing portion  142  of the projection  126  and by an arcuate inner edge  131  of the moving unit  130 . Specifically, an outer periphery of the coin C is guided by the storing ring  148 . Thus, only one coin, i.e. the coin C with the largest diameter, is held in the recess  134 , which is formed slightly deeper than the diameter of the coin with the largest diameter (2 pound coin). 
   Because its depth is less than twofold of the diameter of the coin with the smallest diameter (5 pence coin), two pieces of the coins with the smallest diameter cannot move together in the direction of the diameter of the rotary disk  124 . Further, the recess  134  is designed in the fan-shaped configuration, and two pieces of the 5 pence coins with smallest diameter cannot be aligned together towards the peripheral direction of the rotating disc  124 . 
   Therefore, only one piece of the supplied coins can be held in the sorting recess  134 , including the 5 pence coin with the smallest diameter. The coins C held in the recess  134  are moved toward the coin transporting unit  108  as the rotating disc  124  is rotated. In other words, the coins C are moved upward from downward position. 
   In this case, the coins C are moved as they are pushed by the pushing portion  142 , and almost no force is applied on the moving unit  130 . When the moving unit  130  is moved to a position closer to the coin transporting unit  108 , the driven unit  154  is moved into the transfer process groove  172 . Thus, the driven unit  154  is moved in the direction of the diameter of the rotating disc  124 . 
   As a result, the moving unit  130  is pivotally moved clockwise with the pivot axis  146  as a fulcrum. Therefore, the moving unit  130  pushes the coins C positioned at the sorting recess  134  toward the direction of the diameter of the rotating disc  124 , and the coins C are pushed out of the sorting recess  134 . 
   When the driven unit  154  is positioned in the moving groove  170 , the moving unit  130  is moved to the moving position MP. The coins C pass through the opening  150  and are pushed toward the moving route of the pushing means  180 . 
   Immediately after the coins C are pushed out, the coins C are contacted by the pushing unit  180  and are pushed from behind. Then, the coins C are moved by the first coin guide  200 A, the second coin guide  200 B, the third coin guide  200 C, the fourth coin guide  200 D, and the fifth coin guide  200 E. In other words, the coins C are transported along the first transport route  202 A, the second transport route  202 C, the third transport route  202 C, the fourth transport route  202 D, and the fifth transport route  202 E in this order. 
   At the second transport route  202 B, the coin C is detected by the denomination distinguishing unit  204 , and the denomination type is identified. When the coin C is identified as a 2 pound coin, the control unit  231  magnetizes the solenoid  220  according to the first pulse signal from the detector unit  224  for detecting the pushing unit  180  after the identifying procedure. 
   As the result of the magnetization, the diverting plate  222  is protruded into the transport route  202 C. The 2 pound coin has its peripheral surface pushed by the pushing means  180  and guided by the second coin guide  232 , and the 2 pound coin is moved to separate from the guide plate  194  because the surface  222 S of the diverting plate  222  is inclined. 
   As a result, the 2 pound coin is disengaged from the third coin guide  200 C and drops off. Being guided through a chute (not shown), the coin is sent into the coin hopper P 2  and is stored in it. When the coin C is identified as a 20 pence coin, the solenoid  228  is magnetized for a given period of time according to the output of two pulse signals from the detector unit  224  for detecting the pushing unit after identifying the coin. 
   As the result of the magnetization, the diverting plate  230  is protruded into the transport route  202 C. Thus, the 20 pence coin is moved as it is separated from the guide plate  194  by the diverting plate  230 . Then, the 20 pence coin is disengaged from the third coin guide  200 C and drops off. Being guided through a chute (not shown), the coin is guided into the coin hopper  20   p  and is stored in it. 
   In case of a coin other than a 2 pound coin and a 20 pence coin, the solenoids  220  and  228  are not magnetized according to the detection by the denomination distinguishing unit  204 . The coin C thus transported passes through the 2 pound coin sorting unit  212  and the 20 pence coin sorting unit  214  and reaches the sorting unit  216  for the 5 pence coin with the smallest diameter. 
   When the transported coin C is a 5 pence coin, its upper end is not guided to an edge  232  of the 5 pence coin sorting opening  234 . Thus, the upper end of the coin C drops into the 5 pence coin sorting opening  234 . As described above, the coin is disengaged from the third coin guide  200 C and drops off. Being guided through a chute (not shown), it is sent into the coin hopper  5   p  and is stored in it. 
   In case of a 1 penny coin, which is the second smallest coin, its diameter is longer than that of the 5 pence coin, and it passes through the 5 pence coin sorting unit  216  as it is guided along the edge  232 . However, the coin is disengaged from the third coin guide  200 C similarly to the case of the 5 pence coin at the 1 penny coin sorting opening  218 . Being guided through a chute (not shown), the coin is sent into the coin hopper  1   p  and is stored in it. 
   In case of a 1 pound coin, the coin passes through the first sorting unit  186  and reaches the 1 pound coin sorting unit  240  via the fourth transport route  202 D. Similarly to the case of the 5 pence coin, the coin is disengaged from the fifth coin guide  200 E and drops off. Being guided through a chute (not shown), the coin is sent into the coin hopper P 1  and is stored in it. 
   In case of a 10 pence coin, it passes through the first sorting unit  186 , the fourth transport route  202 D, and the 1 pound coin sorting unit  240  and reaches the 10 pence coin sorting unit  242 . Similarly to the case of the 5 pence coin, the coin is disengaged from the fifth coin guide  200 E and drops off. Being guided through a chute (not shown), the coin is sent into the coin hopper  10   p  and is stored in it. 
   In case of a 2 pence coin, it passes through a first sorting unit  186 , the fourth transport route  202 D, the 1 pound coin sorting unit  240 , and the 10 pence coin sorting unit  242 , and it reaches the 2 pence coin sorting unit  244 . Similarly to the case of the 5 pence coin, the coin is disengaged from the fifth coin guide  200 E and drops off. Being guided through a chute (not shown), the coin is sent into the coin hopper  2   p  and is stored in it. 
   In case of a 50 pence coin, the coin passes through the first sorting unit  186 , the fourth transport route  202 D, the 1 pound coin sorting unit  240 , the 10 pence coin sorting unit  242 , and the 2 pence coin sorting unit  244 , and it reaches the 50 pence coin sorting unit  246 . Similarly to the case of the 5 pence coin, the coin is disengaged from the fifth coin guide  200 E and drops off. Being guided through a chute (not shown), the coin is sent into the coin hopper  50   p  and is stored in it. 
   In case a 2 pound coin is not identified by the denomination sensor unit  204 , the 2 pound coin does not drop off from the 20 pence coin sorting unit  214 . The coin does not drop off into the 5 pence coin sorting unit  216 , the 1 penny coin sorting unit  218 , the 1 pound coin sorting unit  240 , the 10 pence coin sorting unit  242 , the 2 pence coin sorting unit  244 , and the 50 pence coin sorting unit  246 , and the coin reaches the most downstream portion  208  of the transport route. 
   In this case, the 2 pound coin is guided by the guiding unit  206  and drops off into the storing section  152  of the coin let-off device  106 . Therefore, this 2 pound coin is transferred to the coin transporting unit by the coin let-off device  106 . Then, it is detected again by the sensor  204  and is sorted at the 2 pound coin sorting unit  212 . 
   In case the coin is not sorted at the 2 pound coin sorting unit  246  for the second time, it is transferred to the coin transporting unit  108  from the coin let-off device  106  again, and it is sorted at the 2 pound coin sorting unit  246 . In case the coin thrown in is a counterfeit coin, it is sorted by the coin selector  104  and is sent back to the coin dispensing unit  120 . 
   In case the change money is given to and stored in the coin hopper  50   p  from the coin hopper P 2  prior to the operation, the coins in bulk state are thrown onto the flat belt  270  through the opening  268 . Then, the flat belt  270  advances as described above, and the coins C are supplied to the storing section  152  of the coin let-off device  106 . As a result, the coin is transferred to the coin transporting unit  108  from the coin let-off device  106  as described above. During the transport in the first sorting unit  186  and the second sorting unit  188 , the coins are sorted for each denomination type, and these are stored in the coin hoppers. 
   A coin receiving unit  211  may be provided in the coin sorting unit as appropriate except the specific denomination types, i.e. 2 pound coin and 20 pence coin. 
   Those skilled in the art will appreciate that various adaptations and modifications of the just-described preferred embodiment can be configured without departing from the scope and spirit of the invention. Therefore, it is to be understood that, within the scope of the amended claims, the invention may be practiced other than as specifically described herein.