Читать книгу The Handyman's Book of Tools, Materials, and Processes Employed in Woodworking - Paul N. Hasluck - Страница 122

The variety in the shapes of adze-heads is very great, there being two or three kinds used by each of the following:—Carpenters and joiners, ship carpenters, wheelwrights, and coopers. The carpenter knows three principal varieties, the English pattern (Fig. 342), Scotch pattern (Fig. 343), and American pattern (Fig. 344). The ash handles used with these may have either of the shapes illustrated by Figs. 345 and 346. The adze must be sharpened from the inside, and when its action is considered (see next paragraph), it is clear that the curvature of the face of the adze-iron must be circular, or nearly so. The true curvature of the metal may be approximately deduced from considering the radius of the circle described by the workman’s arms, and the handle of the adze. The edge of the adze is slightly convex for the same reasons as influenced the curvature of the axe edge already alluded to (see p. 92). The curvature in the blade also serves (though partially) as a fulcrum, for, by slightly thrusting the handle from him, the workman may release chips of timber beneath which the adze is lightly embedded.

Fig. 345.—Adze Handle.

Fig. 346.—Adze Handle.

Fig. 347.—Plain Handle London Screwdriver.