H.M. Childs of Utica, New York, patented the dog-powered butter churn in 1871. The machine consists of an inclined wooden treadmill connected to a butter churn by a flywheel attached to a pitman rod.
Some of you may remember using a butter churn to make butter. For others of us, a butter churn is but a fading memory. Whether using a butter churn or just remembering one, it is attached to warm ...
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