To improve the durability of a put-out device while carrying out the operation of putting out game balls by preventing the jamming of balls in the put-out device.

In a ball put-out path 22 on the upstream side of the put-out device 23, a ball jamming prevention sensing switch 27 for detecting the jamming of the game balls within the ball put-out path 22 is arranged at a position that enables the storing of the game balls ceaselessly exceeding the number of balls to be separated per lot. When none of the game balls are detected by the ball jamming prevention sensing switch 27, a put-out forbidding means made up of a controller forbids the operation of putting out the game balls with the put-out device 23 after the game balls presently being put out and corresponding to the number of the balls to be separated per lot are run out.