Notes on technical sketching and free hand lettering for engineering students (1912)
Smith, Alton Lincoln, 1867- [from old catalog] · Worcester, Mass., The author · leaf 100
majoraxes not quite perpendicular to the axis of the screw will be fairly suggestive of a screw thread. The shapeof the ellipse should be the same as the end of the cylinder on which the thread is cut. Look out forspaces and the shape of the curve at the side line where it forms a slight notch.… … Fig. 4S 98 246. At G is half of a Flange Union such as S of Fig. 11. Draw the central ellipse first, then thefour small ellipses representing bosses for the bolts. The centers of the four are on lines at right anglesin the object. Apply method of Section 199 to determine these lines. After…
Mechanical drawing · Lettering
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