Abstract: A feed mechanism for packing material such as carton blanks is disclosed. Blanks are arranged in a hopper where they are stacked between a pair of vertical members having their lower edges spaced above a support table for advancement of the bottommost blank by a shuttle into the feeding means. The spacing between one of the vertical members above the support is greater than the thickness of the blank and less than twice the thickness thereof and during feed movement a roller is biased against the feed blank to urge it against the bottom of a member. Thus a gate is provided between the bottom of a vertical member and the support.