Pictured above is a rocker butter churn. The cream box is mounted on rockers just like a rocking chair. George Bell of Sumner, Michigan was granted a patent on April 17, 1877 for a churn of this style. His design also included a false bottom of sheet metal. The cream was above the sheet metal bottom and water could be added to the space between the sheet metal and the bottom of the wood box. By adjusting the temperature of the water one could improve the ability of the cream to form butter.
Rocker Butter Churn
Small Antique Table Top Wooden Butter Churn wth Lid Dasher
American Antique Wooden Butter Churn, Civil War Era, c. 1860's
Blue Butter Churn, New England, Ca. Early 19th Century