SEEDING MACHINERY I2Q 



has two bearings to wear out to each furrow opener. It 

 is claimed dry dirt falls in behind the disks on the corn, 

 preventing early germination. All disk planters are very 

 hard to guide. They do not follow the team well. 



FIG. 96 A CORN PLANTER WITH DOUBLE-DISK FURROW OPENERS, OPEN 

 WHEELS, AND HORIZONTAL CHECK HEADS 



174. Planter wheels may be had in almost any height, 

 from very low wheels to those high enough to straddle 

 listed corn ridges. The tire may be flat, concave, or open 



(Fig. 97)- 



The flat wheel is not used to any extent on planters 

 to-day, but is offered for sale by most manufacturers. 

 It does not draw the soil well over the corn, but 

 leaves this hard and smooth to bake in the sun, and gives 

 the water a smooth course to follow after heavy rains. 



