the present invention relates to an apparatus to prevent malfunctions or sorting errors when supplying coins to coin separation holes in a coin separator . the coin separator includes a coin carrier vessel with a coin supply control vessel that can successively supply a small quantity of coins , and an automatic coin release mechanism that causes the above coin carrier vessel to rotate in the reverse direction instantaneously to prevent malfunction and then rotate in the normal direction again resume normal coin separation operations . the automatic coin release mechanism operates in response to any coin that gets caught in the coin carrier vessel during the operation of coin separation that causes the operation to come to a stop .