Power, Its Application from the 17th Dynasty to the 20th Century

12th Dynasty 18th Century aa aa aa angle of friction applied Archimedes B. C. FIG bas-relief Besson blow a bellows bow drill buckets cannon capstans Century A.D. coal cog wheel crane Ctesibius depicts drawing Durham furnace Egypt Egyptian elasticity employed endless chain engine fastened fire flat belt furnace and forge Hero of Alexandria Hiero horizontal hot air invented iron irrigation lathe Leonardo da Vinci lever link engagement linked chains machine manufacture means mechanical mines Morse Chain Driving number of teeth Philo of Byzantium picture pipe power transmission pulley raise the water raising water Ramelli revolving ROCKER JOINT rollers Roman screw shaft short center distances Silent chain sketches slaves smelting southwestern Asia speed ratio sprocket steam stone tombs transmitted tread wheel trip hammers turbine turned vertical tread-wheel vessel Vitruvius water mills water power water wheel wind wheels wind-mill windlasses wire rope workmen ÿ ÿ ÿ