Tyson Turbine

The Tyson turbine is a conical water turbine whose helical blades emerge partway down from its apex, gradually increasing in radius and decreasing in pitch as they spiral toward the base of the cone. Because it operates directly in open flowing water, it needs no protective casing, and it is typically suspended beneath a floating platform anchored in the fastest-moving part of a river, where the current turns the turbine and a belt or gear mechanism carries that power to equipment such as irrigation pumps or electrical generators. Its portability and minimal need for fixed infrastructure made it a practical way to power machinery directly from a river's current without damming or diverting it.