FIG. 91.—THE BEARING 'EASED' BY REMOVAL OF THE WALL.
FIG. 92.—THE BEARING 'EASED' BY THINNING THE WEB OF THE SHOE.
Figs. 91 and 92 show respectively the manner of 'easing' by removal of the wall, and by thinning the web of the shoe. In this connection it is necessary to point out that on no account should 'springing' of the heels of the shoe be allowed. Fig. 93 illustrates the ill-practice.
In this case, when the entire weight is thrown on to the heels, the portion of wall posterior to the crack is bound to participate unduly in the downward movement, and so tend to widening of the crack at its highest point.
