Abstract: This invention provides for a method of and apparatus for the manufacture of finned tubing, more particularly high-fin tubing, from tubular metal fin stock on a tube liner by means of a plurality of rollers rotatably drivable by means of arbors and each roller including a plurality of axially arranged forming discs. At least some of the discs have recessed cross-sectional profiles including radially extending recessed portions radially spaced from the disc peripheries so that when these discs are forced into the metal fin stock the fin stock is only in partial contact with the discs during the formation of the fin and is not in contact over the recessed portions.

Abstract: This invention is concerned with apparatus for manufacturing spirally wound gaskets. The apparatus includes a pair of co-planar radially movable forming discs and independently mounted and axially adjustable guide members. The apparatus may be used either for winding gasket forming material tightly around one forming disc, or adapted for centerless winding where gasket forming material is wound in a loop around one forming disc. Where thin, wide-flanged gaskets are to be wound, the forming disc which abuts the outer periphery of the gasket is shaped so as not substantially to curve gasket forming material in the direction away from the gasket periphery and thus produce stress in the gasket. Where the apparatus is designed for centerless winding, a template adapted to be disposed between the forming discs to move in conjunction with gasket forming material may be provided, particularly for forming non-circular gaskets.