Abstract: A part feed assembly (10) for feeding parts from a feed line to an assembling machine including a multiple part escapement (12) including a plurality of linearly aligned openings (14) for sequentially receiving a part from the feed line. A drive mechanism (20) is operatively connected to a ball screw shaft (16) for incremental rotation of the ball screw shaft (16). A cart (44) threadedly engages the ball screw shaft (16) for incremental linear movement axially along the shaft (16) and for supporting the escapement (12) thereon to advance the openings (14) in the escapement from the feed line to the assembling machine where the parts are released from the openings (14).