Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 71
f the center is placed at infinity, the racklobe A 00 will be formed. If the center be taken negatively, on thesame ;iide as the original center &i, at h^, Ketc.a,. 64, etc., negative multilobes a2, a^, a^,, will be formed about the original curve All these multilobes, positive and… … Train of tnultilohes Fig, 110, will roll in external contact, so that they canbe formed in train. Fig. 110. When it so happens, as it does with theellipse revolving on its focus, or the logarith-mic spiral revolving on its pole, is taken, thatthe first derived pair of curves, or unilobes,are…
Gearing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
