This vintage kitchen gadget is a hand-cranked rotary egg beater.
The cook held the upper handle over a bowl and turned the side crank. The gears rotated the two metal beaters rapidly, mixing eggs, cream, cake batter, or other ingredients.
Before electric hand mixers became common, tools like this saved considerable time and effort in the kitchen. They required no electricity, were durable, and could last for decades.
Many people may remember seeing one in a parent’s or grandparent’s kitchen.


