PURPOSE: To reverse a work by addition of a simple device without requiring a special driving source and to improve the productivity, by using an attracting means as a reversing device in relation to shifting of a feed bar.

CONSTITUTION: When a feed bar 7 lifts, a cam follower 28b for returning is disconnected from an upper groove 29b, and a work W is lifted by an attracting device 25. When the bar 7 arrives at the limit of ascent, a cam follower 28a for going is engaged with an lower groove 29a. The bar 7 then starts, circumferential movement for feeding the work W, and the cam follower 28a is guided along the lower groove 29a to move outward. Accordingly, a bevel gear 21 is rotated through an arm 26 and a rotation shaft 22, and arrives at the position of the next station, and fitted to the stopper of a stopper board 32 to perform positioning. At this time, the bevel gear 23 rotates by 180 degrees. Accordingly, the attracting device 25 is rotated 180 degrees while holding the work, and the work is reversed completely. Then, the bar 7 lowers, and releases the attracting force of the attracting device 25, and the work W is dropped.