The present invention relates to a part feeder supplying a plurality of parts, the part feeder including part supply members having a part loading path enabling the plurality of parts to be loaded in a state where postures of the plurality of parts are lined up. A part passage is provided to a first end of the part loading path, the part passage enabling the plurality of parts to pass while maintaining a fixed posture for each, and in which a gas passage is provided to a second end of the part loading path, the gas passage not enabling the plurality of parts to pass and enabling in- and outflow of a gas. The present invention, accordingly, enables reduction of equipment costs of a part feeder. The present invention is particularly advantageous for a device supplying rubber stoppers.

A nut feeding apparatus for feeding a weld nut to an upper electrode of a resistance welding machine, whose size and production cost are reduced, is disclosed. The apparatus comprises a piston rod, a tension rod, a tube, a link mechanism and a nut chuck. When the piston rod is in a most retracting state, an upper surface of the nut chuck becomes substantially flush with a lower portion of an opening of the tube. While the tension rod is at a stop in a most advancing state and when the piston rod further advances, the link mechanism rotates around a rotation axis at a tip of the tension rod, and thereby, the weld nut held by the nut chuck moves to a feeding position of the weld nut in the upper electrode.