Ellsworth M. Longfield

“ The sides of the boss are extended to form a right cone. This right cone is cut by two planes, the surface of the body being one cutting plane, and the line of junction between the boss and the handle, the other. A half-profile is drawn directly upon the base of the cone, and divided into equal parts. These parts are numbered and extension lines drawn from each division, perpendicular to the base of the cone. From each intersection of the base, lines are drawn to the apex.
A half plan of the boss is drawn directly above the elevation. ”

“ Figure 231 is an elevation of the cup strainer. The body is a frustum of a cone whose apex is noted upon the drawing as Apex No. 1. The handle of the strainer is also a cone and miters upon the conical body as shown in Fig. ”