PURPOSE: To reduce a number of parts for a stocker so as to reduce a manufacturing cost by supporting plural buckets storing articles by respective driving chains via supporting pins arranged in positions, which mutually deviate from an axis, on both sides of the buckets.

CONSTITUTION: A stocker 10 orderly storing plural parts boxes 12, which store various kinds of parts individually, is provided with plural buckets 14, which store the parts box 12 one by one. Each buckets 14 consists of a shallow upside opened box and is respectively provided with projecting supporting pins 14p, 14p in cross positions, which are separated by a distance (a) from each other in the X-axis direction, on both side faces. The supporting pins 14p are individually supported by the first driving chain 18, which is looped up between the first sprocket 21 and the third sprocket 23, via a block 16p and the second driving chain 28, which is looped up between the second sprocket 42 and the fourth sprocket 64, via a block 26p, so that each bucket 14 is freely circulated horizontally without using any guide arm and the like for maintaining the horizontal.