A rocking action would churn the butter. Butterchurnhistory offers more details, such as: “For an additional 16 dollars this company sold a treadmill attachment that allowed a dog, goat or sheep to supply the power to swing the churn.”

A rocking action would churn the butter. Butterchurnhistory offers more details, such as: “For an additional 16 dollars this company sold a treadmill attachment that allowed a dog, goat or sheep to supply the power to swing the churn.”