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 46
«D • H … Tlie preceding is a very common mode of obtaining the curves of the teeth of a pair of wheels whichtre to geer together; but it is faulty, in as far as it gives a form of teeth smaller at the root than at thepitch circles, and also in the cii-cumstauce that a pair of wheels set off with templets…
Gearing · Mills and mill-work · Odontograph
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.