Control mechanism for embroidering machines

Claim 1

IN AN EMBROIDERING MACHINE OF THE CLASS DESCRIBED, THE COMBINATION OF A FIXED FRAME SECTION, A DRIVE SHAFT, A NEEDLE BAR OPERATING SHAFT, A CAM ON SAID DRIVE SHAFT, AN IDLER ROLL ON SAID DRIVE SHAFT ADJACENT SAID CAM, SAID CAM AND SAID ROLL HAVING RADIALLY ALIGNED GENERALLY CIRCULAR PORTIONS, A CRANK HAVING ONE END SECURED TO SAID NEEDLE BAR OPERATING SHAFT, A ROLLER MOUNTED AT THE OTHER END OF SAID CRANK FOR AXIAL MOVEMENT WITH RESPECT TO SAID DRIVE SHAFT AND ENGAGEMENT WITH SAID CAM AND SAID ROLL, FIRST MECHANISM FOR SHIFTING SAID ROLLER FROM SAID CAM TO SAID ROLL AND VICE VERSA WHEN SAID ROLLER IS OPPOSITE SAID GENERALLY CIRCULAR PORTIONS, SECOND MECHANISM MOUNTED ON SAID NEEDLE BAR OPERATING SHAFT INCLUDING A RECIPROCATABLE PLUNGER AND MEANS FOR ALTERNATELY EXTENDING SAID PLUNGER TO ENGAGE SAID FRAME SECTION AND FOR RETRACTING SAID PLUNGER, AND CONTROL MEANS FOR EFFECTING OPERATION OF SAID FIRST MECHANISM TO MOVE SAID ROLLER BETWEEN SAID CAM AND SAID IDLER ROLL POSITIONS AND FOR EFFECTING OPERATION OF SAID SECOND MECHANISM TO EXTEND SAID PLUNGER.