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A Treatise on the Teeth of Wheels

By C.E.L. Camus, translated by J.I. Hawkins

1837, 215 pages, ill

First published in the 1750s as part of Camus' Cours de mathematique, this study of epicycloid gearing and the design of gear trains was one of the most significant advances in horology and mill work.

In 1806 it was translated into English by J.I. Hawkins and then reprinted in 1837 and 1868. The second edition, available here, has an extensive appendix which includes a survey of contemporary English watchmakers; it was undertaken to see who, if anyone, made timepieces with correctly formed gear teeth.

This copy of the book is based on the copy made available by Google Books (see Google Books copy of Camus). However, there are three important changes:

This revised book is provided as an Adobe Acrobat PDF file of about 6 MB:

Illustration: Rounding up tool for adjusting the shape of wheel teeth. Made by "FSI".