Looper mechanism for a sewing machine

Claim 1

IN A SEWING MACHINE HAVING A POINTED EYE NEEDLE ADAPTED TO CARRY THE THREAD AND TO MOVE UPWARD AND DOWNWARD TO PASS THROUGH THE MATERIAL BEING SEWN, A FIRST ELONGATED DRIVE SHAFT MEANS, A FEED DOG MECHANISM FOR MOVEMENT OF THE MATERIAL BEING STITCHED, SAID FIRST ELONGATED DRIVE SHAFT MEANS DISPOSED HORIZONTALLY AND ADAPTED TO OPERATE SAID FEED DOG MECHANISM AT ITS FORWARD END, SAID FIRST DRIVE SHAFT MEANS HAVING A FORWARD FULL REVOLUTION CAM, MEANS FOR MOVING SAID FEED DOG MECHANISM VERTICALLY AS WELL AS HORIZONTALLY, SAID FIRST DRIVE SHAFT MEANS HAVING A REAR FULL REVOLUTION CAM MEANS MOUNTED GENERALLY COAXIALLY OF SAID REARWARD END OF SAID FIRST DRIVE SHAFT MEANS, A SECOND ELONGATED DRIVE SHAFT MEANS DISPOSED GENERALLY HORIZONTALLY AND ADAPTED TO BE DRIVEN AT ITS REARWARD END BY SAID REAR FULL REVOLUTION CAM MEANS, SAID SECOND DRIVE SHAFT MEANS EXTENDING FORWARDLY TOWARD SAID FIRST DRIVE SHAFT MEANS AT AN OBLIQUE ANGLE THERETO, A LOOPER MECHANISM MOUNTED AT THE FORWARD END OF SAID SECOND DRIVE SHAFT MEANS FOR ENGAGING THE THREAD CARRIED BY SAID NEEDLE DURING A SEWING OPERATION AND ADAPTED TO MOVE IN SYNCHRONISM WITH SAID FEED DOG MECHANISM WHEREBY SAID SEWING AND LOOPING OPERATION WILL COOPERATE WITH THE MOVEMENT OF SAID MATERIAL BY SAID FEED DOG MECHANISM.