What defined Samuel Crompton's 1775 Spinning Mule as a hybrid solution?

Answer

It combined the multi-spindle capability of the Jenny with the roller mechanism of the Water Frame.

The Spinning Mule, developed by Samuel Crompton around 1775 or 1779, served as a necessary evolution because neither the Jenny (lacking strength) nor the Water Frame (lacking perfect output quality) was sufficient alone. The Mule was a true hybrid, successfully merging the multi-spindle capacity that allowed for high output rates, derived from the Spinning Jenny, with the sophisticated roller mechanism used for drawing and twisting fibers, taken from the Water Frame. This fusion enabled the production of yarn that achieved even finer quality than its predecessors while maintaining the high output rate necessary to keep pace with expanding weaving capacities.

What defined Samuel Crompton's 1775 Spinning Mule as a hybrid solution?
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