For farming operations and industrial operations the Jeep could be equipped with a power take-off (PTO) for use with direct drive implements or belt driven implements. PTOs are standard equipment on farm tractors and were an option on early Jeeps.
CJ2A Owners Manual – Plowing Method, PTO and Vehicle Speeds
PTO repair and installation courtesy of the CJ3-A Page
Willys PTO comparisons courtesy of Art Contoni at the 48CJ2a.com page