Device for driving windshield wipers

Claim 1

THE COMBINATION WITH A PAIR OF OSCILLATING WINDSHIELD WIPERS ACTUATED BY AN ELECTRIC MOTOR, OF A DEVICE COMPRISING: (A) A CRANK DRIVEN IN ONE DIRECTION BY AN ELECTRIC MOTOR ABOUT A FIXED AXIS, (B) SAID CRANK HAVING A PIN WHICH IS RADIALLY REMOVED FROM THE AXIS ABOUT WHICH SAID CRANK ROTATES AND SUBSTANTIALLY PARALLEL THERETO (C) A PAIR OF WIPER ARM SPINDLES TURNABLE ABOUT FIXED AXES WHICH ARE PARALLEL TO AND AT OPPOSITE SIDES OF THE FIXED AXIS OF SAID CRANK, EACH OF SAID WIPER ARM SPINDLES CARRYING A DIFFERENT ONE OF THE WINDSHIELD WIPERS, (D) A PAIR OF PULLEYS, EACH OF SAID PULLEYS BEING FIXED TO A DIFFERENT ONE OF SAID WIPER ARM SPINDLES, (E) AN ELONGATED MOTION TRANSMITTING MEANS RUNNING ABOUT SAID PAIR OF PULLEYS AND HAVNG ONLY TWO RUNS EXTENDING BETWEEN SAID PULLEYS, ONE OF SAID RUNS EXTENDING FROM ONE OF SAID PULLEYS TO SAID OTHER PULLEY AND SUPPORTED AT ITS ENDS ONLY BY SAID PAIR OF PULLEYS, THE OTHER OF SAID RUNS BEING AT A DIFFERENT LEVEL AND VERTICALLY DISPLACED IN ITS ENTIRELY FROM SAID ONE RUN, SAID OTHER RUN INCLUDING TWO SECTIONS WHICH RESPECTIVELY EXTEND TOWARD ONE ANOTHER FROM SAID PAIR OF PULLEYS AND HAVING OUTER FREE ENDS, (F) MEANS FOR REMOVABLY CONNECTING THE OUTER FREE END OF EACH OF SAID SECTIONS OF SAID OTHER RUN TO SAID CRANK PIN, SAID REMOVABLE CONNECTING MEANS FOR EACH SECTION OF SAID OTHER RUN FUNCTIONING TO ENABLE EACH OF SAID SECTIONS TO MOVE FREELY ON SAID CRANK PIN