Stencil-controlled automatic sewing apparatus

Claim 1

AUTOMATIC SEWING APPARATUS COMPRISING IN COMBINATION: (1) A SEWING MACHINE HAVING A BED, AN ELECTRIC DRIVING MOTOR, AND MEANS INCLUDING A RECIPROCATORY NEEDLE OPERABLY CONNECTED WITH SAID MOTOR, TO SEW STITCHES IN A WORKPIECE FED PAST SAID NEEDLE, (2) A WORK CARRIER MOUNTED UPON SAID BED FOR BOTH TRANSLATORY DISPLACEMENT ALONG A STRAIGHT LINE AND ROTATION ABOUT A PIVOT MOVABLE ALONG SAID LINE, (3) A DRIVING STENCIL CONNECTED TO SAID CARIER BEING CONSTITUTED BY A MULTIPLICITY OF MUTUALLY SPACED DRIVING ELEMENTS FORMING A GUIDE PATH CONFORMING TO THE CONFIGURATION OF A SEAM TO BE SEWN IN THE WORK SUPPORTED BY SAID CARRIER, SAID STENCIL INCLUDING AT LEAST ONE CORNER SECTION HAVING LEADING AND TRAILING LEGS IN RESPECT TO THE DIRECTION OF MOVEMENT OF THE STENCIL, SAID LEGS INCLUDING AN ANGLE OF 90* OR LESS, FOR THE SEWING OF A CORRESPONDING CORNER OF SAID SEAM, (4) A MAIN DRIVING PINION HAVING A FIXED AXIS WITH MEANS TO DRIVE THE SAME BY SAID MOTOR, SAID PINION ARRANGED LATERALLY OF SAID STENCIL COAXIALLY WITH SAID NEEDLE, TO OPERABLY ENGAGE ONE SIDE OF SAID ELEMENTS, (5) A ROTARY SUPPORT COAXIAL WITH SAID MAIN DRIVING PINION, AND (6) AN AUXILIARY DRIVING PINION ROTATIVELY MOUNTED UPON SAID SUPPORT WITH MEANS TO DRIVE THE SAME BY SAID MOTOR IN A DIRECTION OPPOSITE TO THE DIRECTION OF ROTATION OF SAID MAIN DRIVING PINION.