Found in a barn cleanup. It's a heavy iron tool with a hinge and jagged teeth on the inside curve
Antique handheld corn shellers were ingenious solutions to the labor-intensive task of removing kernels from corn cobs. These tools utilized a simple yet effective mechanism: the cob was placed between the hinged arms, and as the tool closed, the jagged teeth would strip the kernels away from the cob.
The process was straightforward. By holding the cob firmly in one hand and applying pressure with the tool in the other, the user could efficiently separate the kernels without damaging them. This method was not only faster than hand-picking but also less wasteful, ensuring that nearly all kernels were collected for use.