Portable, reversibly operated, power-driven tool

Claim 1

AN INTERNAL COMBUSTION ENGINE, AND A FIRING SYSTEM FOR THE ENGINE OPERABLE AUTOMATICALLY TO PRODUCE AN IGNITION SPARK FOR THE ENGINE AT PROPER TIME FOR FIRING WITH THE ENGINE RUNNING IN EITHER OF OPPOSITE DIRECTIONS, SAID FIRING SYSTEM COMPRISING A SPARK-PRODUCING DEVICE, A MAGNETO INCLUDING A ROTOR PORTION CONNECTED TO THE ENGINE TO BE DRIVEN THEREBY, A STATOR PORTION, COIL MEANS MOUNTED ON ONE OF SAID PORTIONS AND CONNECTED TO SAID SPARK-PRODUCING DEVICE, MAGNET MEANS MOUNTED ON THE OTHER OF SAID PORTIONS, AND AN INTERRUPTER FOR ACTIVATING THE COIL MEANS INCLUDING MEANS ACTUATING THE INTERRUPTER CONNECTED TO THE ENGINE, SAID MEANS ACTUATING THE INTERRUPTER BEING CONSTRUCTED TO ACTIVATE SAID COIL MEANS AT ONE POSITION OF THE ROTOR PORTION WHEN THE ENGINE IS RUN IN ONE DIRECTION AND AT ANOTHER POSITION OF THE ROTOR PORTIN WHEN THE ENGINE IS RUN IN THE OPPOSITE DIRECTION, SAID ONE POSITION OF THE ROTOR PORTION BEING PROPER TIME FOR FIRING OF THE ENGINE WITH THE ENGINE RUNNING IN SAID ONE DIRECTION AND THE OTHER POSITION OF THE ROTOR PORTION BEING PROPER TIME FOR FIRING THE ENGINE WITH THE ENGINE RUNNING IN THE OPPOSITE DIRECTION, SAID COIL AND MAGNET MEANS BEING CONSTRUCTED TO PRODUCE VOLTAGE PEAKS IN SAID MAGNETS AT EACH OF THESE POSITIONS OF THE ROTOR PORTION.