PURPOSE: To cope with a change in the size of an article by installing opening restriction members overlapping with article discharge openings of a drum.

CONSTITUTION: The drum 70 is provided with plural article discharge openings 70a in a hanging bell shape and opening restriction plates 72 provided with openings 72a at the same pitch are provided thereupon. Further, one boss each is provided on the reverse surface of the opening restriction plate 72 between adjacent openings 72a and 72a. The drum 70, on the other hand, is provided with two fitting holes each that enables adjacent article discharge openings 70a and 70a to engage the boss selectively. When the opening restriction plate 72 is rotated clockwise or counterclockwise, the combination of the fitting hole and boss which engage each other changes and the article discharge opening 70a of the drum 70 and the opening 72a of the opening restriction plate 72 meet or do not meet each other. Consequently, the effective opening area of the article discharge opening 70a can easily be varied corresponding to the size of a capsule article 3 to be vended.