Handheld rotary whip or food mixer, metal and wood. Large crankwheel mounted on upper framework, set vertically above a smaller cog wheel which enables the mixing motion when cranked by the crank grip, an attached knob-shaped unpainted wood handle. One flat mixing component, sheet metal, pierced throughout with circular holes, which rotates. Knob-shaped unpainted wooden handle at top. Outer side of crank wheel is marked:"DUNLAP'S/SANITARY/CREAM & EGG WHIP/NO SPATTER NO WASTE/COLUMBIA METAL PRODUCTS CO./CHICAGO U.S.A./SOLE MFRS & DISTRIBUTERS/PD/SEPT, 1916/FEB. 26, 190(missing) MAY 15, 1906".
The only Patent Number listed for a beater or whip under this company is US 1744445 A, January 21, 1930, William J. Casey, Chicago, Illinois, assignor of Columbia Metal Products Company, Chicago, Illinois. It is possible that the dates stamped on the crankwheel are for prior patents that led to this invention.
Maker is Columbia Metal Products Company, Chicago, Illinois.
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