Ignition device for combustion engines

Claim 1

AN IGNITION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE HAVING AT LEAST ONE SPARK PLUG COUPLED TO A HIGH VOLTAGE IGNITION COIL COMPRISING, A THREE-LIMBED CORE OF FERROMAGNETIC MATERIAL COMPRISING A CENTRAL LIMB AND A PAIR OF OUTER LIMBS, A FIRST BIPARTITE WINDING COMPRISING A FIRST WINDING SECTION MOUNTED ON ONE OF SAID OUTER LIMBS AND A SECOND WINDING SECTION MOUNTED ON THE OTHER OF SAID OUTER LIMBS, A SECOND PIPARTITE WINDING COMPRISING A FIRST WINDING SECTION MOUNTED ON ONE OF SAID OUTER LIMBS AND A SECOND WINDING SECTION MOUNTED ON THE OTHER OF SAID OUTER LIMBS, THE FIRST AND SECOND WINDING SECTIONS OF ONE OF SAID BIPARTITE WINDINGS BEING WOUND IN OPPOSITE DIRECTIONS, A SOURCE OF ALTERNATING VOLTAGE COUPLED TO SAID FIRST BIPARTITE WINDING AND HAVING A FREQUENCY WHICH IS HIGH RELATIVE TO THE MAXIMUM ENGINE SPEED, A FERROMAGNETIC ARMATURE ROTATED IN SYNCHRONISM WITH THE ENGINE AND POSITIONED ADJACENT THE LIMBS OF SAID CORE SO AS TO BRIDGE NO MORE THAN ONE PAIR OF LIMBS AT ANY GIVEN INSTANT DURING SAID ROTATION, SAID ARMATURE BEING OPERATIVE TO PERIODICALLY VARY THE RELUCTANCE OF THE MAGNETIC CIRCUIT COMPRISING THE CENTRAL LIMB AND AT LEAST ONE OF SAID OUTER LIMBS OF CORE SO THAT THE ALTERNATING VOLTAGE APPLIED TO SAID FIRST BIPARTITE WINDING INDUCES DISCRETE VOLTAGE PULSES IN SAID SECOND BIPARTITE WINDING, AND MEANS RESPONSIVE TO SAID INDUCED PULSES FOR ENERGIZING SAID IGNITION COIL TO PRODUCE HIGH VOLTAGE ELECTRIC IGNITION PULSES FOR SAID SPARKPLUG IN SYNCHRONISM WITH THE ENGINE ROTATION.