What critical quality advancement did the Water Frame provide over the Spinning Jenny output?

Answer

It produced thread that was far stronger and harder, suitable for warp yarn.

The Spinning Jenny, while increasing thread volume, produced yarn that was relatively soft and weak. This limitation meant that early Jenny yarn often required traditional spinning methods for the warp, the lengthwise threads that bear the most tension during weaving. Richard Arkwright's Water Frame, introduced in 1769 and driven by water power, overcame this deficiency. It was capable of spinning thread that was significantly stronger and harder, rendering it perfectly suitable for use as warp yarn, thereby providing the necessary structural integrity for the increasingly demanding weaving processes.

What critical quality advancement did the Water Frame provide over the Spinning Jenny output?
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