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 49
adius A 3 the circle p q, dottedin Fig. 2055, and falling within the pitch circle; this will be the locus of the centres of the teeth. Thushaving divided the pitch circle into arcs corresponding to the pitch of the teeth, take the constant radius3 T in the compasses, and keeping one point in the… … The sides of teeth thus formed, consisting each of a single arc, bear considerable analogy to involuteteeth, and like these have the fault of acting together with rather too much obliquity; but the mode ofdescribing them is exceedingly simple, and they have this advantage, that they will work…
Gearing · Mills and mill-work · Odontograph
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