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:
“What are heavy? Sea-sand and sorrow;
What are brief? Today and tomorrow;
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What are deep? The ocean and truth.”
—Christina Georgina Rossetti (1830–1894)
“There is a patent office at the seat of government of the universe, whose managers are as much interested in the dispersion of seeds as anybody at Washington can be, and their operations are infinitely more extensive and regular.”
—Henry David Thoreau (1817–1862)
“I call to mind the navy great
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And how the boistous winds did beat
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Till Agamemnon’s daughter’s blood
Appeased the gods that them withstood.”
—Henry Howard, Earl Of Surrey (1517?–1547)