The Story of Tools: How They Built Our World and Shaped Man's LifeExplains how man has achieved all the mechanical advances he knows through the use of five simple machines--lever, wheel and axle, pulley, screw, wedge, and plane. |
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Page 24
... valve . When a bellows operator squeezes the boards together , he forces air into a furnace through a nozzle . With the smelting furnace more copper and tin could be produced and , naturally , more bronze tools could be made . Some were ...
... valve . When a bellows operator squeezes the boards together , he forces air into a furnace through a nozzle . With the smelting furnace more copper and tin could be produced and , naturally , more bronze tools could be made . Some were ...
Page 54
... valves in the motor of your family car to mention a few examples . Hero's best - remembered invention , however , was his aeoli- pile , named after the Greek god of the winds , Aeolus . It was a water - filled copper pot set on a tripod ...
... valves in the motor of your family car to mention a few examples . Hero's best - remembered invention , however , was his aeoli- pile , named after the Greek god of the winds , Aeolus . It was a water - filled copper pot set on a tripod ...
Page 75
... valve . When the down- stroke ended , it tripped a valve that let steam into the bottom of the cylinder . This steam pushed the piston up , while the steam that had powered the downstroke escaped into the con- denser through an overhead ...
... valve . When the down- stroke ended , it tripped a valve that let steam into the bottom of the cylinder . This steam pushed the piston up , while the steam that had powered the downstroke escaped into the con- denser through an overhead ...
Contents
The Only Toolmaker | 3 |
From Fist Ax to Plow | 10 |
Putting Fire to Work | 21 |
Copyright | |
12 other sections not shown
Common terms and phrases
aeolipile American animals atomic fuel automation automobile began boring mill Bronze Age bucket build built called cams centuries chine circuits coal copper cylinder device distance drill effort arm electricity electronic energy England factories farmers farming Fertile Crescent fire fist ax fulcrum furnace gear GRANGER COLLECTION hammered hand harness heat Hero's holes horse inch inclined plane Industrial Revolution internal-combustion engine invention inventors Iron Age Karl Benz laser laser beam lathe learned lever Leyden Jar light machine tools machinery magnet man's manufacturing mechanical metal miles million Miner's Friend motion motor move musket needed neutrons nuclear Olduvai Gorge operation patent plow pole produce pull pulley pumping reactor rock scientist screw shape signal simple machines spinning steam engine stick Stone Age subatomic particles tape things tion toolmaking transducers turn United uranium valve water wheel Watt Watt's wheel and axle Whitney wire