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Tidbits of Wisdom
Famous Female Inventor:
NANCY JOHNSON
(Ice Cream Freezing Machine)

Nancy Johnson (1795-1890) was the producer of an ice cream freezing machine in 1843 (before freezers were invented). It was a manual device cranked by a handle. An outer wooden pail contained crushed ice; an inner tin or pewter cylinder contained the ice-cream mix to be frozen. A lid was bolted on and the handle inserted through the top of the lid and turned to freeze the mix. The device inside attached to the handle was called a dasher.

The invention was patented in 1843, the first such device listed, but Nancy sold it off cheaply. It did however become the standard mechanism for many years.