PURPOSE: To easily change the vibration angle of a parts feeder consisting of a vessel, provided with spiral parts transfer tracks, driver part, driver part mounting base and a plurality of elastic units.

CONSTITUTION: In case of changing a vibration angle of a driver part 11 in a bowl 1' having transfer tracks 51 elastic units 16 are rotated counter clockwise by an angle of 2β and fixed. At work for adjusting the angle, it is only enought o loosen bolts 24, 26, 27 and turn the whole elastic units 16 around the bolt 24 in a state of supporting the unit 16 by the bolt 24. Thereafter, if power is fed to the driver part 11, the bowl makes the motion of elliptic vibration with its major axis in a tilt angle of γ for the horizontal direction, then parts are transferred on the track 51 at the same moving speed.