CAMUS, CHARLES ÈTIENNE LOUIS. - THE GEAR OF TIMEKEEPERS.

Sur la Figure des Dents des Roues, et des Aisles des Pignons, pour rendre les Horloges plus parfaites.

(Paris, L'Imprimerie Royale, 1735). 4to. Without wrappers. Extracted from "Mémoires de l'Academie des Sciences. Année 1733". Pp. 117-140 and 4 folded engraved plates. Fine and clean.

By this paper Camus was the first to work out the mathematical theory of gearteeth into a systematical and general theory of the mechanism.

Order-nr.: 46584