US Patent 7603783 Woodworking plane with adjustable mouth

A plane such as a low angle jack plane having an adjustable toe that cannot inadvertently slide backwards in the plane body so that it contacts and possibly damages the plane blade. A threaded stop mounted in the plane body bears against the toe establishing the point to which the toe can slide back in the plane body. Rotation of the threaded stop moves the end of the stop by small, easily controlled increments, making it easy to change the width of the mouth while preventing contact between the toe and the plane blade.