A TREATISE OF MECHANICS, THEORETICAL, PRACTICAL, AND DESCRIPTIVE. BY OLINTHUS GREGORY, LL.D. OF THE ROYAL MILITARY ACADEMY, WOOLWICH ; HONORARY MEMBER OF THE PHILOSOPHICAL SOCIETIES OF LONDON AND AND OF THE NEWCASTLE ANTIQUARIAN SOCIETY. THE THIRD EDITION, CORRECTED AND IMPROVED. VOL. II. CONTAINING REMARKS ON THE NATURE, CONSTRUCTION, AND SIMPLIFICA- DESCRIPTIONS OF MANY CURIOUS AND USEFUL MACHINES. -Talem intelligo Philosophiam naturalem, quæ non abeat in fumos LONDON: PRINTED FOR F. C. AND J. RIVINGTON; G. WILKIE; J. RICHARD- A-H CONTENTS OF PRACTICAL MECHANICS. ON the Construction and Simplification of Machinery On Rotatory, Rectilinear, and Reciprocating Motions On Bevel-Geer, and Proportioning the Number of Teeth On Uniformity and Smoothness of Motion On the Operation and Use of a Fly On Friction and the Stiffness of Cords, with the Experiments of On Wind as a Mover of Machinery, with Smeaton's Rules relative On the Strength of fired Gunpowder On Steam as a Mover of Machinery, with the Results of Bettancourt |