Abstract: A machine makes nails having a star-shaped transverse cross-section by sequentially feeding conventional nails into a form roller station defined by a plurality of form rollers that are radially arrayed with respect to a centerline of the nails. Circumferentially spaced notches formed about the periphery of each form roller engage the heads of the conventional nails as the form rollers rotate and pull the nails into forming relation with the form rollers. The notches also prevent formation of the nail heads. A plurality of circumferentially spaced concavities formed in the form rollers prevents forming of the work-hardened points of the nails. The nails are sequentially delivered from a bowl feeder to an indexer that inverts the nails. A pair of rotatably mounted augers transfer the nails from the indexer to a nail-gripping device that holds each nail until its head is engaged by the nail-engaging notch in each of the form rollers.

Abstract: A process for transforming the round shafts of nails into a multi-vaned profile involves supplying an oriented sequence of abuting identical nails to an indexing operation where the nails are separated and uniformly oriented, then feeding the nails head first downwardly into the nip of rolls which secure each nail by its head and form the round shaft of each secured nail into a multi-vaned profile. Apparatus for performing the nail transforming process includes an indexing mechanism, a downward feeding mechanism, and a set of forming rolls positioned to rotate in vertical planes.