Abstract: An automatic label emplacer is designed for easy attachment to a commercially-available lock-stitch sewing machine. The label emplacer comprises an improved label dispenser which cooperates with a simplified pressure frame that allows for a 360.degree. or more stitching path circumscription of the label. Operation of the label emplacer is pneumatically and mechanically controlled.

Abstract: A needle positioner for a sewing machine having a shaft connected to a main drive motor to move a sewing machine needle reciprocally by a stitching operation which includes a crank rotatably supported on a frame drivably connected to the sewing machine shaft with a plurality of pneumatically actuated cylinder/piston assemblies, the pistons of which are engagable with the crank to move the crank and therefore the shaft through predetermined rotary angles together with a plurality of conduits having valves including control valves therein which are adapted to communicate the cylinder/piston assemblies with a source of pneumatic pressure so that selective actuation of the control valves produces rotary movements of the crank through the appropriate cylinder/piston assembly to move the needle into either a top or bottom position.

Abstract: A pneumatic thread undercutter to sever both the needle thread and the bobbin thread in a lock stitch type sewing machine. The apparatus works in conjunction with a pneumatically controlled sewing machine, and includes a frame disposed beneath a sewing area surface, a pneumatic cylinder carried on the frame having an extensible rod upon which a moving blade is operatively connected so as to translate in a reciprocal lateral manner. The moving blade includes a cutting notch, a pull hook and anvil hook orifice cooperating with a ramp area on a bobbin case to engage both the bobbin thread and needle thread such that one thread is cut before the other. A stationary knife is included to cut the second of the two threads so that at the end of a predetermined sewing endeavor the thread attached to a work piece can be expeditiously cut and a second work piece can be engaged in a rapid manner.