Notes on technical sketching and free hand lettering for engineering students (1912)
Smith, Alton Lincoln, 1867- [from old catalog] · Worcester, Mass., The author · leaf 52
f<P^22 … Fig 17 50 RACK FIG. 18 141. A rack is essentially a Spur Gear with an infinite diameter. Give its length and width, thekind and pitch of teeth. BEVEL GEARS FIG. 18 142. In bevel gears the pitch surfaces are cones. In the drawing they are shown as isoscelestriangles DAB and DBG. The pitch circle on…
Mechanical drawing · Lettering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
