Folding Slat-Box Dasher Churn: A Slatted Parallelogram That Folds to Squeeze the Cream

Clement came back three years after his V-bottom churn with a dasher that folds itself flat. Edwin B. Clement of Barnet, Caledonia County, Vermont, received US 12,377, dated 13 February 1855, for a dasher that "will surround the cream and force it through spaces between the slats of the dasher by closing or folding together." Four arms carry four shafts at their ends; two arms have square holes for the crank shaft and two round holes for a rod; connecting bars fixed to the shafts join them; slats close the bottom and sides, and two slatted doors held by buttons close the top. Worked forward and back by the crank, "it will open and fold the dasher, and describe the inside of the vessel," whose shape follows the dasher's sweep. This rung works out how much the box squeezes, then prints the arms, bars and bearings, builds the slatted dasher, and makes and washes butter.