Square for folding conformed lapels or columns in cardboard boxes, has two portions, one for folding lapel at right angle at start of folding motion, and other for holding end of lapel during same motion

摘要

A square, rotational around an axis parallel to the folding hinge of the lapel, includes two portions. One portion has adjacent edges for forming a lapel fold at right angle at start of folding motion. The other portion is for holding the end of the lapel during the same motion.