HENRY T. BROWN

This 1868 compendium of ingenious mechanisms employs simple drawings to explain 507 of the small components that constitute complex machinery. Left-hand pages feature illustrations, and facing pages offer brief descriptions of use and operation. Ranging from simple to complex, the mechanisms include cranks, pulleys, drills, wheels, and screws.

POLIAS, ENGRENAGENS, CAMES, GOVERNADORES e vários outros estão entre os engenhosos mecanismos contidos neste livro, publicado pela primeira vez no auge da Segunda Revolução Industrial, em 1868. Esta