> Instead of using air gaps, Sansone thought he could incorporate another magnetic field into a motor. This would increase this saliency ratio and, in turn, pr

> Instead of using air gaps, Sansone thought he could incorporate another magnetic field into a motor. This would increase this saliency ratio and, in turn, produce more torque. This appears to be the novel part. It's an SRM but it appears to replace, or augment, the airgaps using some additional technique to increase the saliency ratio. The text sort of implies that it's using a rotor winding, but I'm not sure; that would arguably make it no longer an SRM. Maybe he's added conductors into the airgaps to exclude magnetic fields via eddy currents. Or maybe something else! Whatever it was, it's very impressive to be making and testing motor prototypes on one's own, at his age or any age. There's a ton of work that goes into every little detail, like coil winding, or bearing alignment. Definitely great work!