Knife with reciprocating blades

Claim 1

IN A CUTTER, THE COMBINATION OF A HOUSING, A PAIR OF THIN KNIFE BLADES WITH SERRATED CUTTING EDGES IN SIDE-BYSIDE RELATION EXTENDING FROM THE HOUSING, AN ELECTRIC MOTOR WITH A SHAFT IN THE HOUSING, AND MEANS FOR CONVERTING ROTARY MOTION OF THE SHAFT INTO OPPSITELY DISPOSED OSCILLATORY MOTION IN THE BLADES, SAID MEANS INCLUDING A PAIR OF CONNECTING RODS MOUNTED FOR LIMITED LINEAR TRAVEL IN THE HOUSING AND HAVING SOCKETS THEREIN, PINS SECURING THE BLADES TO THE RODS, A DRIVING HEAD ON THE MOTOR SHAFT AND HAVING A TERMINAL SHAFT DISPOSED AT AN ABLIQUE ANGLE TO THE SHAFT AXIS, ON OSCILLATORY PLATE FREELY ROTATABLE ON THE SHAFT AND PROVIDED WITH STUDS HAVING SPHERICAL HEADS EXTENDING FROM OPPOSITE SIDES OF THE PLATE, SAID HEADS BEING POSITIONED IN THE SOCKETS IN THE RODS, AN ELECTRICAL SWITCH FOR THE MOTOR AND SLIDABLE CAM MEANS FOR RETRACTING THE PINS TO PERMIT REMOVAL OF THE BLADES, SAID CAM MEANS LOCKING THE SWITCH AGAINST CIRCUIT CLOSING WHEN IN BLADE RELEASING POSITION.