PURPOSE: To increase a positional accuracy by making the hold releasing body of a work movable in small distance to a feeding bar, providing a positioning hole on the hold releasing body toward the feeding bar lifting direction and fitting to the pin provided at the work station side.

CONSTITUTION: Plural work holding release bodies 30 are provided on a feeding bar 20 and the intervals thereof are made in the same number as those of an inlet port station 14 and work stations 11 - 13. The holding release body 30 is moved from the inlet port station 14 to the work stations 11 - 13 by the lifting and moving operations of the feeding bar 20, moved to an outlet port station 15 and worked by the work stations 11 - 13. A positioning hole faced to the work station is provided at the lower part of the holding release body 30 and a positioning pin 42 is fixed upward to each station 11 - 15. So in case of the work holding release body 30 moved by the operation of the feeding bar 20 being placed on each station 10 - 14, the positioning accuracy is improved by the fitting of the positioning pin 42 and hole.