Coin operated switch control - has coin contact switches before and after coin checking unit to prevent reuse of coin on thread

摘要

The system enhancing the immunity of coin operated gaming machines from fraudulent interference prevents withdrawal of coins by inserting a coin attached to a thread. The repeated down and up motion of the coin past the coin contact switch which sets the machine into a working state is checked by a security switch (11) fitted in the coin feeding channel (2). The security switch makes inoperative the coin contact switch. The coin is inserted into the checking unit (3) through inlet slot (1) which extends into the coin feed channel (2). The checking unit features a rejection channel (4) as well as coin through-feed channel (5) which is fitted with switching lever (7) of the coin contact switch (8). The feed channel (2) is controlled by lever (10) of the security switch (11) which is series connected to switch (8).