468 



ENGINEERING ON THE FARM 



b) Rubber belting : Rubber belts are used where there is 

 escaping steam or dripping water and are made of canvas 

 thoroughly coated with rubber and are two- to eight-ply in 

 thickness. 



c) Canvas belting: Canvas belts are made of from two- 

 to ten-ply canvas sewed together, thoroughly saturated with 

 oil and then painted. They are strong and the cheapest 



After International Harvester Co. 



Fig. 357. Transmission of power by pulley and belt 



