Improved Mode of Regulating the Velocity and Furling the Sails of Wind-Wheels. (open access)

Improved Mode of Regulating the Velocity and Furling the Sails of Wind-Wheels.

Patent for a new windmill using different parts to help regulate the sails and for folding and unfolding the sails, including illustration.
Date: March 24, 1857
Creator: Witting, F. W.
System: The Portal to Texas History