Achievements
The principle of his rolling spinning process was perfected by John Kay and Thomas Highs and promoted by Richard Arkwright. Paul's machine seems only to have been modestly profitable, and it is not clear to what extent his work is reflected in Arkwright's much more successful machine, the water frame, patented in 1769. Like Paul and Bourn, Arkwright subsequently added a carding stage to his machinery, but his use of this as a means of continuing his patent rights beyond the expiry of his original patent failed, because the improvement was not his invention.
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“Like all writers, he measured the achievements of others by what they had accomplished, asking of them that they measure him by what he envisaged or planned.”
—Jorge Luis Borges (1899–1986)