One-way disk plow manufactured by Charles Angell of Plains, Kansas. Angell, a wheat farmer, developed a plow that set all disks at the same angle, or "one-way," to increase tilling efficiency. Farmers liked that it plowed faster and easily broke up hard soil, but its overuse created a fine, dusty layer that quickly blew away in heavy winds. This is a smaller version of the actual plow, which was ten feet wide. Angell made this four-foot model for use in his family's vegetable garden.