Rotary-and-Vibrating Dasher Churn: Turn to Churn, Lift and Plunge to Gather

Nash wanted to switch from churning to gathering "without changing the connection of the machinery." William R. Nash of Bridgeport, Connecticut, received US 7,348, dated 7 May 1850, for working rotary and vertical churn-dashers on one shaft. A rotary dasher of four radial hollow prismatic arms, each with a hole in its forward side near the shaft and an aperture in its rear side near its end, turns above a perforated vibrating dasher held between collars. The pinion on the lid drives the shaft by a pin in a notch, "but the shaft being free to slide vertically upward," the handle on top can work the vibrating dasher up and down. This rung looks at the hollow arms, then prints both dashers and the notched pinion, fits them in a box, and makes butter.