Note 203 — Chapter XV · Watt again visits Cornwall—Invention of the Rotary Motion—The Patent Right again assailed.
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Watt had made use of the crank at a very early period. Thus we find him writing to Dr. Small on the 20th September, 1769,—“As to the condenser, I laid aside the spiral wheels because of the noise and thumping, and substituted a crank: in other respects it performed well enough.”