Abstract: A thread trimming mechanism including a pair of knives for severing thread disposed therebetween. The knives are magnetically attracted to each other such that a cooperative cutting relationship is maintained therebetween.

Abstract: An apparatus for supporting and tensioning a tubular workpiece edge such that the edge may be linearly advanced beneath the stitch forming instrumentalities of a sewing machine. The tensioning apparatus includes at least two rotative assemblies which are insertable within the closed loop formation of the workpiece edge. One of the rotative assemblies being connected to a balanced tensioning arm and is adapted for movement between two operative positions in a manner whereby applying a constant circumferential workpiece edge tension on all article sizes.

Abstract: A sewing machine apparatus including a work support assembly and a positioning assembly that cooperate in moving a workpiece edge through the sewing station of the machine. The workpiece support assembly is arranged to carry and advance the open end of the workpiece in an endless loop configuration. The positioning assembly operatively rotates wih the work support and is effective to influence the lateral placement of the workpiece edge before and during the sewing cycle.