In the January 2016 issue of Farm Collector, Ken Larson inquired as to the function of a specific set of eveners. As shown in his photo, it looks like the back evener of a 4-up hitch. There would be a chain, rod or cable running ahead to hook to the lead team. It would allow all four horses to pull evenly. It could be used on anything that you would use four horses on. I have a setup on a sled pole. At the end, I have a clevis holding the rod and chain up where the front evener hooks up. Not many people use this system anymore. Most people use a rope and pulley setup.
Norman Roering, Belgrade, Minnesota