Brass model, scale 1:8, of the conoidal three-bladed propeller patented and made by George Rennie, Greenwich, Kent, England, 1839. This type of this type of screw propeller was fitted to the iron ...

How best to propel a ship through the water remained a constant focus for inventive effort throughout the nineteenth century. National Museum of American History Patent Model for a Feathering Paddle ...

To mark the centenary of practical marine screw propulsion, a special exhibit was opened at the Science Museum, South Kensington, on February 11. In accordance with the usual practice of the Museum, ...