with a driving member connected differentially with both a driven member and an oscillatory member with large resistance to movement, e.g. Constantinesco gearing

Full Title

Gearings based on repeated accumulation and delivery of energy > Rotary transmissions with mechanical accumulators, e.g. weights, springs, intermittently-connected flywheels > Gearings for conveying rotary motion with variable velocity ratio, in which self-regulation is sought > based essentially on inertia > with a driving member connected differentially with both a driven member and an oscillatory member with large resistance to movement, e.g. Constantinesco gearing