Where there is but a small quantity of corn to be shelled a sheller can be made of a few scraps of wood usually found on a farm. A block of wood having a sloping notch cut from one end is mounted on three legs as shown. The notched part, as well as the lever, is thickly filled with spikes driven in so that their heads protrude about 1/2 in.
Excerpt from: THE BOY MECHANIC – BOOK 2 – 1000 THINGS FOR BOYS TO DO / ILLUSTRATIONS PUBLISHED 1915, BY H. H. WINDSOR CHICAGO POPULAR MECHANICS CO. PUBLISHERS
The Projecting Nail Heads in the Block and Lever, as They Pass, Shell the Corn
The ear of corn is placed in the notched part and the lever pressed down. Two or three strokes of the lever will remove all the kernels from the cob. A box is provided and conveniently located on one leg to catch the shelled corn.
—Contributed by A. S. Thomas, Gordon, Ont.
Hand Corn Sheller – How to Make a Simple Hand Corn Sheller
A very handy device for shelling corn, and especially popcorn, can be made of a 1-in. board on which is fastened a piece of metal lath. The edges of the metal lath are bound with a strip of wood nailed to the board.—Contributed by Ulysses Flacy, Long Beach, California.
Metal Lath on a Board