A short treatise on the designing and construction of gearing and mill-work. Accompanied by an explanation of the construction and use of the odontograph of Prof. Willis .. (1873)
[Scott, David] engineer. [from old catalog] · New York, D. Appleton and company · leaf 40
\ GEERINCr. 31 … It may also be observed, that for every pair of pitch circles an infinite number of pairs of involutesmay be assigned that will answer the required conditions; for the inclination of E T D to the line olcentres is manifestly arbitrary, and every change of inclination niani- 2041. festly produces a…
Gearing · Mills and mill-work · Odontograph
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.