 in my personal library even mentions pulley crowning, and it was written in 1885. I will post my explanation here, after readers have had a chance to puzzle it out for themselves. Correspondence is invited, and if a reader supplies a really good explanation, I won't have to write up mine.
One wonders when the advantages of pulley crowning were discovered, and how it came about. Hans-Peter Gramatke informs me that:
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