Spring Patent Sails
Spring patent sails have a spring to enable each sail to be adjusted individually, with the patent sail system allowing all sails to be adjusted without stopping the mill. The system was not a common one.
Read more about this topic: Windmill Sail
Famous quotes containing the words spring, patent and/or sails:
“Fresh curls spring from the baldest brow. There is nothing inorganic.”
—Henry David Thoreau (1817–1862)
“The cigar-box which the European calls a “lift” needs but to be compared with our elevators to be appreciated. The lift stops to reflect between floors. That is all right in a hearse, but not in elevators. The American elevator acts like the man’s patent purge—it works”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)
“Raphael paints wisdom; Handel sings it, Phidias carves it, Shakespeare writes it, Wren builds it, Columbus sails it, Luther preaches it, Washington arms it, Watt mechanizes it.”
—Ralph Waldo Emerson (1803–1882)