When was the first paddle boat invented?
Quick Reference. Like the pedalo off holiday beaches today, a vessel using a man-powered paddle wheel for propulsion. In China, where they appeared in the 8th century, and
perhaps even as early as the 5th, they were
used as tugs and as passenger river ships.
https://www.oxfordreference.com/display ... 3100300581
Google ..
Paddle Propulsion Boat
Wikipedia => Propeller ..
Leonardo da Vinci perfected early versions of paddled propelled vessels and brought forth improved plans. Leonardo's paddleboat used large wheel-shaped paddles that propelled it through water. In his design, sailors worked foot pedals to rotate the paddles.
The origin of the screw propeller starts at least as early as
Archimedes (c. 287 – c. 212 BC), who used a screw to lift water for irrigation and bailing boats, so famously that it became known as Archimedes' screw. It was probably an application of spiral movement in space (spirals were a special study of Archimedes) to a hollow segmented water-wheel used for irrigation by Egyptians for centuries. A flying toy, the bamboo-copter, was enjoyed in China beginning around 320 AD. Later, Leonardo da Vinci adopted the screw principle to drive his theoretical helicopter, sketches of which involved a large canvas screw overhead.
.. B. engraved in his books and used an Archimedean water screw for his demonstration at Kassel, lifting water .. but never made a self-propelled pedalo or paddle boat to demonstrate the power, adaptability, and versatility of his runners on water or seas and simultaneously reducing labour and operational costs - nor a self-propelled cart on land or rail for the same reasons, including the potential for war efforts and industrialization requiring the transportation of goods ..
++ He did not even have the Merseburg wheel on a low riding cart or trolley with wheels or sleds to move a short distance to carry out the translocation tests - as the criticism was that the wheel was turned via a crank thru the roof down thru the supports ..
** The ability to do so would have been a
huge and genius marketing strategy, and opportunity, for a man with limited selling options who failed to find a buyer for 33 years for his perpetual motion "runners" .. he was not commercially naive, it was not an oversight, and his benefactor Karl was well appraised of the situation and commercial potential ..
My Conclusion .. a runner was bound/anchored to the earth, in one place, for very practical ( i.e. perpetual motion principle functionality ) reasons and inherent operational restrictions !