SEEDING MACHINERY 



107 



a cultivator to sow a strip of ground the width of the 

 cultivator as the ground is cultivated. This seeder has 

 not as yet reached an extended use. 



141. Agitator feed. A broadcast seeder is still upon the 

 market not provided with a force feed, but having what 

 is known as an agitator feed. This feed is composed of 

 a series of adjustable seed holes or vents in the bottom 

 of the hopper, and over each is an agitator or stirring 

 wheel to keep the seed holes open and pass the seed to 

 them. The agitator feed, although cheaper and more 

 simple than others, is not so accurate as the force feed 

 described later. 



Fig. 77 illustrates 'a broadcast seeder with an agitator 

 feed and cultivator gangs attached. This seeder is 

 usually used without any covering device; however, it 

 may be procured with the cultivator gangs or with a 

 spring-tooth harrow attachment. 



FIG. 78 A FORCE-FEED DEVICE. THE FEED IS VARIED BY EXPOSING MORE 

 OR LESS OF THE FLUTED FEED SHELL 



142. Force-feed seeders and drills derive their name 

 from the manner in which the grain is carried from the 



