496 



GENERAL SCIENCE 



Inclined Plane. It is necessary sometimes to roll heavy barrels 

 into a wagon or truck. A plank is extended from the wagon to the 



JACK5CBEW 



Screu) 



JACK5CBEW 



CLAMP 



Screu) 



SCREWNAIi 



FAUCET 



BOLT 



FRUIT PRESS SLALER_> 



FIG. 376. 



MEAT CHOPPER 



ground and the barrel is rolled up the plank. This type of simple 

 machine is called the inclined plane. If the barrel is lifted from 

 the ground it would require a great deal of force, but much less 



