CULTIVATORS. 

 Fig. 119. 



143 



Nonvegian Harrow, kept from clogging- hy two cylinders of teeth 

 playing into each other. 



cleaning action, preventing clogging even in quite ad- 

 hesive soils. 



CULTIVATORS. 



The cultivator is used for loosening and pulverizing 

 the soil, and for cutting and destroying weeds. The 

 usual form is represented in Fi^. 120, v^^here the wheel 



Common Cultivator. 



in front regulates the depth of the teeth. The width 

 is altered by expanding or contracting the. two outer 

 beams. 



Various sorts of teeth are used, according to the na- 

 ture of the work, and they are made of steel or cast- 



