Practical engineering drawing and third angle projection, for students in scientific, technical and manual training schools and for ... draughtsmen .. (1897)
Willson, Frederick Newton, 1855-1939 · Princeton, N.J., The author · leaf 71
the tangent, f q, fi-om / to the base circle. Like the cycloid, the involute is a correct working outline for the teeth of gear-wheels; andgears manufactured on the involute system are to a considerable degree supplanting other forms. A surface known as the developable helicoid is formed by moving… … 188. The Spiral of Archimedes. This is the curve that would be generated by a point having auniform motion around a fixed jDoint—the pole—combined with uniform motion toward or from thepole. In Fig. 107,. with 0 as the pole, if the angles 0 are ec[ual and 0 D, 0 E and 0 y^ are in arith-metical…
Mechanical drawing · Lettering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
