Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 21
9 ON A NEW ODONTOGRAPH. any possible height of tooth, e b, above considerably, and yet cause but slight variations at b. We may therefore adopt pitch line. … Then we will have from the property resort to mathematical expressions for of the circle, r, by which it can be discussed, and by which we may determine the number of ae (2 ad— a e) = '^i, quantities required to express it. For instance, if it can be expressed in terms or calling ae—y and eb=x,…
Engineering
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