Later in the same year , Smith would file a revised patent for a propeller of one turn .
Francis Pettit Smith 's original 1836 patent for a single threaded marine propeller of two full turns .
Later in the same year , Francis Pettit Smith would file a revised patent for a propeller of one turn .
Francis Pettit Smith 's original 1836 patent for a single threaded marine propeller of two full turns .