A large book illustration image dated around 1954 of Sir William Cubitt's Patent Sails in Stalham, UK.
This drawing was done by Sir William showing his patent design for shuttered windmill sails which went on to replace the old canvas sails on windmills, the first mill to be fitted with them was at Stalham in Norfolk . Born in Norfolk he was the son of a miller, but went on to be an engineer of great ability.
An image of Sir William Cubitt's Patent Sails
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