A Connecticut Yankee in King Arthurs Court by Mark Twain Chapter 22 Page 25

His stand was a pillar sixty feet high, with a broad platform on the top of it. He was now doing what he had been doing every day for twenty years up there — bowing his body ceaselessly and rapidly almost to his feet.

It was his way of praying. I timed him with a stop watch, and he made 1,244 revolutions in 24 minutes and 46 seconds. It seemed a pity to have all this power going to waste. It was one of the most useful motions in mechanics, the pedal movement; so I made a note in my memorandum book, purposing some day to apply a system of elastic cords to him and run a sewing machine with it. I afterward carried out that scheme, and got five years’ good service out of him; in which time he turned out upward of eighteen thousand first-rate tow-linen shirts, which was ten a day. I worked him Sundays and all; he