Which subsequent invention was developed to combine the best features of the Jenny with the Water Frame to produce superior thread?

Answer

Spinning Mule

Samuel Crompton's Spinning Mule combined elements of the Jenny and Richard Arkwright’s Water Frame to produce a superior, strong, and fine thread.

Which subsequent invention was developed to combine the best features of the Jenny with the Water Frame to produce superior thread?
inventionevolutionmachinetextilespinning jenny