A hopper is provided with an indexing side edge for controlling the movement of the longitudinal edge of the yet to be formed belt loop. A flat feed surface disposed in proximity to and cooperating with the indexing side edge enables one face of the loop to move toward the sewing station in a controlled manner. The device further employs a canted cantilever spring action on the opposite longitudinal edge of the belt loop, i.e. face-down and includes a top rake having a plurality spaced apart fingers substantially parallel with one another and parallel to the indexing side edge. The co-action of the fingers upon the loop causes the loop to lie flat on the feed surface of the hopper. The cantilever spring, in turn, is mounted on an attachable shoe which moves laterally of the feed surface to thusly be controlled and attached in accordance with the various widths of belt loop material.