Note 220 — Chapter XV · Watt again visits Cornwall—Invention of the Rotary Motion—The Patent Right again assailed.
Reading edition
Watt suggested caution as to making use of the cranks. “In relation to Wilkinson’s forges, I wish you would execute them without the double crank. We shall soon have a bad enough lawsuit on our hands without it.”—Watt to Boulton, 19th July, 1781.