Abstract:
The present invention relates to a self-turning device with the ability to mix and identify balls located in a portable compartment with auxiliary control elements. The device is presented as a whole as a small portable stand-alone device with the ability to perform random drawings. The invention is therefore in the field of devices intended for games of chance and arcade games, such as lotteries, bingo, roulettes, board games, etc.

Description:
OBJECT OF THE INVENTION 
       [0001]    The present invention relates to a self-turning device with the ability to mix and identify balls located in a portable compartment with auxiliary control elements. The device is presented as a whole as a small portable stand-alone device with the ability to perform random drawings. 
         [0002]    The invention is therefore in the field of devices intended for games of chance and arcade games, such as lotteries, bingo, roulettes, board games, etc. 
       BACKGROUND OF THE INVENTION 
       [0003]    Drawing mechanisms which operate horizontally, like in the case of casino roulettes, are known. Such drawing mechanisms have completely reliable and random game results, although they must comply with a series of technical requirements both in terms of their manufacture and their installation, including, among others
       high-tech mechanical manufacturing,   accuracy in assembly, installation and maintenance in the space in which it is to be located,   the foregoing, in addition to the considerable weight and volume, result in a high financial cost, limiting the use of said mechanism except in those cases for which use is essential.       
 
         [0007]    Therefore, a first technical problem of the devices of the state of the art is the number of requirements for correct operation and the high manufacturing and maintenance costs. 
         [0008]    Vertical roulettes with a circumference on the outer perimeter of which there are arranged a series of numbered radial slots and an arrow in the central shaft which can be moved by manual rotation or by being connected to the shaft of a motor driving it, being able to rotate the central arrow or the wheel. This model is well known although it is rather unreliable for the player because both the drive and the subsequent rotation and final stop of the arrow, can be controlled by means of the actual system used. This drawing process is not reliable if random results and an uncontrollable time duration for the result of each drawing are required. 
         [0009]    A second technical problem of the drawing devices of the state of the art is the lack of reliable randomness of some in terms of their operating principle. 
         [0010]    Therefore, it is necessary to have a device that solves the technical problems raised in the description. 
       DESCRIPTION OF THE INVENTION 
       [0011]    The present invention solves the problems described above by means of a self-turning device with the ability to mix and identify balls according to claim  1  and a system comprising the device according to claim  11 . The dependent claims define preferred embodiments of the invention. 
         [0012]    The invention describes a self-turning device with the ability to mix and identify balls, which comprises
       a portable containing frame in turn comprising
           supporting means,   a drum resting on the supporting means,   a motor-driven mechanism comprising a casing and a rotating shaft, the rotating shaft being suitable for transmitting rotational movement to the drum,   electronic control elements for the electronic control of the motor-driven mechanism,   lottery balls the surface of which comprises a graphic depiction identifying the ball in question, and   identification means for identifying the balls;   
           the drum being suitable for housing the lottery balls and comprising
           a hole for the passage of balls located in the perpendicular bisector of the rotating shaft of the drum, and   a display-collecting mechanism for displaying-collecting the balls with fixing means for fixing it to the drum in the area of the hole and with two different bodies; the first body is like a half-closed hood with a front mouth ( 21 ) in the part inside the drum such that when the drum rotates in one direction the hood repels the balls that hit it, whereas in the other direction of rotation of the drum, the mouth of the hood guides a ball into it, and the second different body at the other end of the mechanism is a display area for displaying balls in the form of a basket such that when at least one ball is guided towards the inside of the hood, the ball drops into the basket through the hole for passage for reading, identification and the subsequent return to the drum, and   
           the frame further comprising a sensor located in the lower part suitable for identifying the balls falling into the basket and an electronic display screen for displaying the results,
 
the device characterized in that
   the drum comprises inner extension in the form of a rod suitable for rotating the drum, and   the motor-driven mechanism
           is comprised inside the drum and its shaft ( 3 . 2 ) is integrally attached to the rod suitable for rotating the drum transmitting rotation to the latter, and   comprises a groove in the casing on which the rotation of the opposite end of the drum to the end which is joined to the inner extension takes place.   
               
 
         [0028]    The self-turning device comprises a receptacle in the form of a drum, containing and mixing balls, provided with a display-collecting mechanism with the ability to, in an entirely random manner, move, read and identify in each drawing one of the balls contained inside it, to later return the ball to the remaining balls, maintain the probability that the same ball and its number is repeated in the next drawing. 
         [0029]    The motor-driven mechanism is attached to the drum such that the shaft of the motor-driven mechanism transmits the movement to the supporting means causing the rotation thereof, and such means in turn are attached to the drum at said end transmitting the movement to it. At the opposite end of the supporting means, the motor-driven mechanism has a support and rotation mechanism for the other end of the drum. 
         [0030]    The technical effect and advantage of this last feature is saving space in the interior of the drum suitable for containing the balls, allowing more balls for the probabilities of the drawings, and keeping limited dimensions for the portability of the device. 
         [0031]    The motor-driven mechanism comprises a groove in the casing of the motor-driven mechanism allowing the drum to rotate. The casing is arranged such that the drum rests and rotates freely on the groove, the drum rotating freely on the groove on the opposite end of the drum to the end which is joined to the inner extension. 
         [0032]    The electronic control elements control the start, stop and change of direction of the rotation of the motor-driven mechanism, sending rotation commands in both directions to the drum for mixing the balls contained therein or separating one of the balls for the display and reading thereof, whichever is appropriate, because the exit of a ball can be controlled depending of the direction of rotation of the drum. The drum has a hole to allow the passage or separation of a ball from the remaining balls, said hole located in the perpendicular bisector of the rotating shaft of the drum. 
         [0033]    In the hole for the passage of balls in the drum there is arranged a display-collecting mechanism for displaying-collecting balls, passage being understood as separating a ball from the set of balls and arranging it in the display-collecting mechanism for displaying-collecting balls. Two parts are distinguished in the display-collecting mechanism for displaying-collecting balls, a display basket for displaying balls in its lower part, and a collecting mechanism for collecting balls in its upper part. Outwardly and opposite the hole for the passage of the drum there is a basket with the capacity to house at least one ball of those contained in the drum. At the same time, opposite the hole in the inner part of the drum there is located the collecting mechanism for collecting balls in the form of a hood closed on the sides and having a front access so that a ball can fall into it, and its lower part opens into the basket holding the ball that has been introduced through the entrance of the hood when the drum rotates in one direction of rotation. The configuration of the hood is suitable for repelling or collecting balls according to whether the drum rotates in one direction or the other. Both the basket in the lower part and the ball collector/repeller in the upper part form a display-collecting mechanism that is fixed to the drum with mechanical fixing means. 
         [0034]    An additional advantage of using the collecting mechanism in the form of a hood closed on the sides is that the balls can be shuffled when hitting the hood in the rotation of the drum such that the degree of randomness of the drawing is higher. 
         [0035]    The outer surface of the balls have a printed depiction corresponding to them, such as a number for example, for the purpose of being visually identified by the player, each of them additionally having identification means or an identification code, such as a barcode for example. 
         [0036]    The advantages of this portable stand-alone drawing device with respect to drawing devices of the state of the art are, among others
       more space availability for containing the balls in the interior of the drum, allowing a mayor number of balls for the possibilities of a drawing. All this keeping limited dimensions of the portable containing frame and thus of the drum for the portability of the device, compared to the case of the state of the art where the motor is external to the device, occupying space on both sides of the drum,   possibility of integrating most of the elements inside the drum without needing to use gears to transmit movement from an external motor to the drum, saving in space and providing a higher degree of portability,   clear display for the user of the performance of the drawing and the randomness of the results,   the probability that the same ball and its number is repeated in the next drawing is maintained,   simplicity and reliability of the mechanisms,   manufacturing cost-effectiveness because of the reduced number of parts and size,   portability due to the reduced size of the entire assembly and possibility of stand-alone operation, being able to be used as an individual domestic game,   ability to be coupled with other systems, such as for example a small “arcade machine”; arcade machine being understood as the type of machine activated by credit, either with coins, tokens, cards with credit, etc.       
 
         [0045]    A second inventive aspect presents an arcade game system characterized in that it comprises:
       at least one device comprising game means, such as for example tic tac toe games,   at least one device comprising credit element insertion-release means, such as for example coins, credit tokens, credit cards, etc.   at least one device according to the first inventive aspect.       
 
         [0049]    All the technical features described in this specification (including the claims, description and drawings) can be combined in any manner except the combinations of such mutually exclusive features. 
     
    
     
       DESCRIPTION OF THE DRAWINGS 
         [0050]    These and other features and advantages of the invention will be better understood from the following detailed description of a preferred embodiment in reference to the attached drawings, given only by way of illustrative and non-limiting example. 
           [0051]      FIG. 1  shows a schematic perspective view of a drum ( 4 ) formed by a cage-type structure where the display-collecting mechanism ( 11 ) for displaying-collecting balls formed by its two parts, collecting mechanism ( 10 ) in the form of a half-closed hood and the display basket ( 7 ), are further detailed. 
           [0052]      FIG. 2  shows a logic scheme of connections of different electronic control elements for the electronic control of the device. 
           [0053]      FIG. 3  shows a schematic perspective view of a device where different elements used for forming the device can be seen. 
           [0054]      FIG. 4  shows a schematic section view of an embodiment of the invention where the drum ( 4 ) comprises the motor-driven mechanism ( 3 ) which is attached to the supporting shaft ( 4 . 1 ), forming part of the drum in this particular embodiment, and the shaft ( 3 . 2 ) of the motor-driven mechanism. The casing ( 3 . 1 ) extends into a rotation mechanism comprising a groove ( 3 . 3 ) where the drum ( 4 ) rests and rotates. 
           [0055]      FIG. 5  shows a schematic perspective view of an embodiment of the invention where different elements used for forming the device can be seen. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0056]    The present invention describes a self-turning device with the ability to mix and identify balls, which comprises
       a portable containing frame ( 1 ) in turn comprising
           supporting means ( 2 ),   a drum ( 4 ) resting on the supporting means ( 2 ),   a motor-driven mechanism ( 3 ) comprising a casing ( 3 . 1 ) and a rotating shaft ( 3 . 2 ), the rotating shaft ( 3 . 2 ) being suitable for transmitting rotational movement to the drum ( 4 ),   electronic control elements for the electronic control of the motor-driven mechanism ( 3 ),   lottery balls ( 5 ) the surface of which comprises a graphic depiction identifying the ball in question, and   identification means for identifying the balls;   
           the drum ( 4 ) being suitable for housing the lottery balls ( 5 ) and comprising
           a hole ( 6 ) for the passage of balls ( 5 ) located in the perpendicular bisector of the rotating shaft of the drum ( 4 ), and   a display-collecting mechanism ( 11 ) for displaying-collecting the balls ( 5 ) with fixing means for fixing it to the drum ( 4 ) in the area of the hole ( 6 ) and with two different bodies; the first body is like a half-closed hood ( 10 ) with a front mouth ( 21 ) in the part inside the drum such that when the drum rotates in one direction the hood ( 10 ) repels the balls that hit it, whereas in the other direction of rotation of the drum ( 4 ), the mouth ( 21 ) of the hood ( 10 ) guides a ball ( 5 ) into it, and the second different body at the other end of the mechanism is a display area for displaying balls ( 5 ) in the form of a basket ( 7 ) such that when at least one ball ( 5 ) is guided towards the inside of the hood ( 10 ), the ball ( 5 ) drops into the basket ( 7 ) through the hole ( 6 ) for passage for reading, identification and the subsequent return to the drum ( 4 ), and   
           the frame ( 1 ) further comprising a sensor ( 8 ) located in the lower part suitable for identifying the balls ( 5 ) falling into the basket ( 7 ) and an electronic display screen ( 9 ) for displaying the results,
 
the device characterized in that
   the drum ( 4 ) comprises inner extension ( 4 . 1 ) in the form of a rod suitable for rotating the drum ( 4 ), and   the motor-driven mechanism ( 3 )
           is comprised inside the drum ( 4 ) and its shaft ( 3 . 2 ) is integrally attached to the rod suitable for rotating the drum transmitting rotation to the latter, and   comprises a groove ( 3 . 3 ) in the casing ( 3 . 1 ) on which the rotation of the opposite end of the drum ( 4 ) to the end which is joined to the inner extension ( 4 . 1 ) takes place.   
               
 
         [0072]    In a device depicted in  FIG. 1 , the stand-alone portable random drawing device comprises a portable containing frame ( 1 ) in turn comprising supporting means ( 2 ), a drum ( 4 ) the rotating shaft of which rests on the supporting means, a motor-driven mechanism ( 3 ) suitable for transmitting movement to the drum ( 4 ) through its shaft ( 3 . 2 ) and for supporting the drum ( 4 ) through its casing ( 3 . 1 ), electronic control elements for starting, stopping and changing the direction of the rotation of the motor-driven mechanism ( 3 ), lottery balls ( 5 ) the surface of which comprises a graphic depiction identifying the ball ( 5 ) in question, and identification means or code for identifying the balls ( 5 ). 
         [0073]    At the same time, in this same device, the drum ( 4 ) is suitable for housing the lottery balls ( 5 ) and comprises a hole ( 6 ) for passage located in the perpendicular bisector of the rotating shaft of the drum ( 4 ), and a display-collecting mechanism assembly ( 11 ) for displaying-collecting the balls ( 5 ) suitable for being fixed to the drum ( 4 ) in the area of the hole ( 6 ). Said display-collecting mechanism or assembly ( 11 ) has a display basket ( 7 ) outside the drum ( 4 ) and the mouth of which is opposite the hole ( 6 ), suitable for collecting at least one ball ( 5 ) from the drum ( 4 ), and a collecting mechanism ( 10 ) for collecting balls in the form of a half-closed hood inside the drum ( 4 ) with an entry mouth ( 21 ) such that when the drum rotates in one direction it repels the balls hitting the collecting mechanism ( 10 ), whereas in the other direction of rotation of the drum ( 4 ), the mouth of the mechanism guides a ball into it, all such that it allows separating the balls ( 5 ) from the drum ( 4 ) towards the basket ( 7 ) for reading, identification and the subsequent return to the drum ( 4 ). 
         [0074]    On the other hand, the frame ( 1 ) also comprises a sensor ( 8 ) located in the lower part suitable for identifying the balls ( 5 ) contained in the basket ( 7 ) and an electronic display screen ( 9 ) for displaying the results. Advantageously, said sensor ( 8 ) is an opto-electronic sensor. 
         [0075]    In a particular embodiment of the invention, the frame comprises supporting means ( 2 ) which in the embodiment are a rod where the drum ( 4 ) rests and it is in turn suitable for rotating the drum ( 4 ) at one end. This rod suitable for rotating the drum ( 4 ) is attached to the drum ( 4 ) making it rotate, and the rod is in turn rotated through the shaft ( 3 . 2 ) of the motor-driven mechanism ( 3 ). The shaft ( 3 . 2 ) of the motor-driven mechanism ( 3 ) is controlled by means of the electronic control elements for starting, stopping and changing the direction of the rotation of the motor-driven mechanism ( 3 ). 
         [0076]    In one embodiment of the invention, the stand-alone portable drawing device rests on a pedestal ( 12 ), as the device seen in  FIG. 3 , comprising:
       a window ( 13 ) suitable for housing the electronic display screen ( 9 ),   at least one electronic control button ( 14 ) of the motor-driven mechanism ( 3 ),   a CPU ( 15 ) (not shown in the figure) electrically connected to the electronic control elements for starting, stopping and changing the direction of the rotation of the motor-driven mechanism, suitable for receiving data from the exterior and transmitting data towards the interior. The CPU comprises a microprocessor and an internal memory for storing play-related data.       
 
         [0080]    In this embodiment, the button ( 14 ) is used to control, set parameters, such as for example the number of turns in the drawing, and to start the motor-driven mechanism ( 3 ), and the moment when the user decides to move a ball ( 5 ) for identification with the sensor ( 8 ) is therefore controlled. Once the sensor ( 8 ) has read the ball ( 5 ) and the screen ( 9 ) shows the result, the user hits the button ( 14 ) again to turn the drum ( 4 ) again and thus move the ball ( 5 ) towards the interior with the remaining balls ( 5 ). 
         [0081]    In one embodiment of the invention, the motor-driven mechanism ( 3 ) is comprised inside the drum ( 4 ) the casing ( 3 . 1 ) of which extends integrally with the shaft ( 4 . 1 ) of the drum which is formed as part of the drum ( 4 ) in  FIG. 4 , and its rotating shaft ( 3 . 2 ) is integrally attached to the shaft ( 4 . 1 ) of the drum in a single part. As can be seen in  FIG. 4  this attachment between the shaft ( 3 . 2 ) of the motor-driven mechanism ( 3 ) and the shaft ( 4 . 1 ) of the drum allows the shaft ( 4 . 1 ) to rotate when the shaft ( 3 . 2 ) of the motor rotates, and therefore allows the drum ( 4 ) to rotate. 
         [0082]      FIG. 4  shows a drum rotation sensor ( 20 ) and a drum stop sensor ( 24 ). Optical sensors, also called “optos”, counting the turns and controlling the stops by means of turn control flanges ( 23 ) attached to the shaft ( 4 . 1 ) of the drum and integrally rotating with it, are used in this particular embodiment. Once every two times a turn control flange ( 23 ) is detected by the rotation sensor ( 20 ), the latter counts a turn and the CPU computes the number of turns. This embodiment is an alternative in which the motor-driven mechanism ( 3 ) is in the form of a rod, advantageously meaning that it can be used as part of the shaft ( 4 . 1 ) of the drum by using the casing ( 3 . 1 ) in the form of a rod ( FIG. 4 ). In this particular case the casing ( 3 . 1 ) supports the drum ( 4 ) which is not fixed on it but rather rotates freely on a groove ( 3 . 3 ) provided for that purpose on the casing ( 3 . 1 ). In  FIG. 4 , the supporting means ( 2 ) are two side supports where the drum is supported. 
         [0083]    The movement of the shaft ( 3 . 2 ) of the motor-driven mechanism ( 3 ) thereby causes the movement of the shaft ( 4 . 1 ) of the drum, and the latter causes the drum ( 4 ) to move on the left end. On the right end in  FIG. 4 , the drum ( 4 ) rotates on the mentioned groove ( 3 . 3 ) provided in the casing ( 3 . 1 ). 
         [0084]    In  FIG. 5 , the left end of the drum ( 4 ) is attached to a rod ( 2 ) forming the supporting means ( 2 ) in this embodiment and is in turn suitable for rotating the drum ( 4 ). The drum ( 4 ) rotates with the rod ( 2 ) which receives the rotational movement by means of the shaft ( 3 . 2 ) of the motor-driven mechanism ( 3 ). The movement of the shaft ( 3 . 2 ) of the motor-driven mechanism ( 3 ) thereby causes the movement of the drum ( 4 ) through the rod ( 2 ). 
         [0085]    In a device with the ability to perform random drawings, the drum ( 4 ) is formed by a cage-type structure. This embodiment can be seen in  FIG. 1 . This figure also shows the display-collecting mechanism or assembly ( 11 ) for displaying-collecting balls ( 5 ) with its two different parts: the outer basket ( 7 ) and collecting mechanism ( 10 ) in the form of a half-closed hood with a side entrance ( 21 ). The mechanical fixing means attaching the mechanism ( 11 ) to the drum ( 4 ) in the area of the hole ( 6 ) are also shown. In an embodiment variant shown for this purpose in  FIG. 5 , the half-closed hood ( 10 ) has a curved outline. 
         [0086]    In one embodiment of the invention, the drum ( 4 ) is formed by a transparent material. 
         [0087]    In one embodiment, the pedestal ( 12 ) further comprises a speaker ( 16 ) for emitting possible audible messages to the user. 
         [0088]    In one embodiment, the pedestal ( 12 ) further comprises an additional button ( 17 ) for requesting data, such as the play summary, results of previous games, etc. 
         [0089]    In one embodiment, the pedestal ( 12 ) further comprises a data in/out connector ( 18 ) with respect to the CPU ( 15 ) which allows sending data about the results of the drawings to another arcade device. The device has hardware and software means and a microcontroller for controlling the entire operation, accounting and play filing, play mode choice, and data in/out collector ( 18 ) for a possible connection and control from the exterior. 
         [0090]    In one embodiment, the pedestal ( 12 ) further comprises coupling and/or fixing means for coupling and/or fixing to another arcade device, preferably an “arcade machine”, arcade machine being understood as the type of game machine activated by credit, either with coins, tokens, cards with credit, etc. 
         [0091]    In one embodiment of the invention, the sensor ( 8 ) located in the lower part of the portable frame suitable for electrically identifying the balls ( 5 ) falling into the basket ( 7 ) is a barcode reader ( 8 ) and the identification means or code for identifying lottery balls ( 5 ) is a barcode. 
         [0092]    In one embodiment of the invention, the barcode reader ( 8 ) is located on a support for the barcode reader ( 8 ). In contrast, as can be seen in  FIG. 4 , the reader can be built into the pedestal ( 12 ) without needing to use a support. 
         [0093]    In one embodiment of the invention, the display basket ( 7 ) of the drum ( 4 ) has dimensions such that it is able to house a single ball ( 5 ). It is thus assured that only one ball enters the basket ( 7 ), preventing user confusion when seeing two winning balls instead of a single ball which is what will be displayed on the screen ( 9 ). 
         [0094]    In one embodiment of the invention, the display basket ( 7 ) of the drum ( 4 ) has dimensions tales such that it is able to house up to two balls ( 5 ). It is thus assured that two balls enter the basket ( 7 ): one of them indicating units and the other indicating tens. The technical advantage provided by this embodiment is that only twenty balls are needed for drawings in which the purpose is to obtain results between “00” and “99”. In other words, two sets of balls ( 5 ) from number “0” to number “9” are needed, with the subsequent advantages of:
       smaller drum size,   lower number of balls ( 5 ) to be replaced during device maintenance,   lower cost.       
 
         [0098]    In the case where the embodiment comprises a basket ( 7 ) with a capacity for two balls ( 5 ), the identification means for identifying the balls ( 5 ) are, by way of example, one of the following variants:
       two barcodes readers ( 8 ) placed on respective supports on the pedestal such that they are opposite the basket at different heights, one on top of the other, and each one being suitable for identifying a ball, one identifying units and the other identifying tens, or   an RFID (Radio Frequency Identification) sensor placed under the basket ( 7 ) inside a pedestal ( 12 ) which identifies both balls and distinguishes them by proximity thereto.       
 
         [0101]    In one embodiment of the invention, the drum ( 4 ) further comprises a blade ( 19 ) for shuffling the balls ( 5 ). Advantageously, the blade ( 19 ) has the form of a quarter-circular arc. This blade is seen in  FIG. 4  and rotates driven by the movement of the shaft of the motor-driven mechanism ( 3 ) and it is supported by the supporting rod ( 2 ) of the drum ( 4 ). 
         [0102]    In one embodiment of the invention, the drum ( 4 ) comprises two blades ( 19 ) for shuffling the balls ( 5 ), having the form of a quarter-circular arc supported on the supporting rod ( 2 ) and comprising a gap ( 26 ) in the part supported on the rod ( 2 ). These blades ( 19 ) are shown in  FIG. 6  and comprise gaps ( 26 ) for giving balls ( 5 ) greater mobility in the movement of the drum ( 4 ), and therefore greater randomness to the result of the drawing. 
         [0103]    In one embodiment of the invention, the device is suitable for obtaining combinations of several figures in successive drawings because it memorizes in an internal memory partial play-related data such that it can obtain combinations of numbers randomly to play official lottery drawings. 
         [0104]      FIG. 2  shows the functional units of an embodiment of the invention and the direction of the commands from and towards the CPU ( 15 ) of each of them.  FIG. 2  specifically shows:
       power source ( 22 ),   CPU ( 15 ).   screen ( 9 ),   speaker ( 16 ),   button ( 14 ),   additional button ( 17 ) or auxiliary button for accessing accounting data and files,   barcode reader ( 8 ),   motor-driven mechanism ( 3 ),   drum turn passage sensor ( 20 ) or drum stop reference sensor,   drum stop sensor ( 24 ),   data in/out connector ( 18 ) with respect to the CPU.       
 
         [0116]    As indicated above,  FIG. 5  shows an embodiment of the invention where the motor-driven mechanism ( 3 ) is comprised inside the drum ( 4 ) and its rotating shaft ( 3 . 2 ) is integrally attached to the supporting rod ( 2 ) and in turn suitable for rotating the drum ( 4 ), and where the drum ( 4 ) comprises two blades ( 19 ) for shuffling the balls ( 5 ) having the form of a quarter-circular arc supported on the supporting rod ( 2 ) and comprising a gap ( 26 ) in the part supported on the rod ( 2 ). This embodiment particularly has the following advantages:
       capacity to contain a determined a number of balls ( 5 ), not less than of  50 ,   the balls ( 5 ) are not small so they can be easily seen,   it is all contained in a portable drum ( 4 ) with small dimensions,   the motor-driven mechanism ( 3 ) integrally attached to the rod ( 2 ) lacks pinions and gear rings, and   no special adjustments are needed.       
 
         [0122]    In one embodiment of the invention, an arcade machine or a game system comprising a self-turning device according to any of the preceding embodiments is presented. 
         [0123]    The following reference numbers have been used in the embodiments of the invention described throughout the description:
         1 . portable frame,     2 . supporting means     3 . motor-driven mechanism,     3 . 1 . casing of the motor-driven mechanism,     3 . 2 . shaft of the motor-driven mechanism,     3 . 3 . groove on the casing ( 3 . 1 ) allowing the drum to rotate freely,     4 . drum,     5 . balls,     6 . hole for the passage of balls,     7 . display basket,     8 . identification sensor,     9 . display screen,     10 . collecting mechanism in the form of a half-closed hood,     11 . collecting-display mechanism or assembly,     12 . pedestal,     13 . window,     14 . button for starting and controlling plays and drawings,     15 . CPU,     16 . speaker,     17 . auxiliary button for accessing accounting data and files,     18 . connector for passing data to the CPU by remote control,     19 . blade for shuffling balls arranged integrally with the rod suitable for rotating the drum ( 4 ),     20 . drum turn passage sensor,     21 . front void or aperture of the collecting mechanism in the form of a half-closed hood,     22 . power source,     23 . turn control flanges,     24 . drum stop sensor.