You could call this vintage gadget the original food processor. Known as the Keystone grinder, this one is model # 20 and made of heavy cast iron. It states “Made in USA” on the handle and weighs more than 4 pounds. Almost all of the early 1900′s grinders clamped to the side of a table to allow room to crank the handle off the edge. Estimated to be about 1925-1940.
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