CHAPTER XIX 



The Rolling Coulter 



' I 'HE purpose of the rolling coulter is to cut the stubble 

 and trash into lengths the width of the furrow and 

 leave a smooth furrow bank. On account of the great 

 difference in soil texture and the varieties of trash dif- 

 ferent adjustments are necessary to bring about this 

 result. 



To make the furrow bank smooth the rolling coulter 

 must be set to the land far enough away from the plow 

 shin and deep enough in the ground to prevent the shin 

 of the plow from digging into the furrow bank made by 

 the rolling coulter. In ordinary conditions the coulter 

 set to cut a furrow J4" to Y% wider than the plow bot- 

 tom will suffice, but by no means can anyone assume that 

 this is a set rule to follow. Set the coulter so that it 

 accomplishes the result intended. 



One must remember when setting a coulter to properly 

 cut the furrow bank that, if the coulter, when set, is not 

 running parallel with the landside of the plow, the plow 

 is out of adjustment and the bottom must be correctly 

 adjusted before the rolling coulter can be finally set. 

 The depth at which the rolling coulter operates must be 

 determined solely by conditions. 



In cutting trash the coulter should make with the 

 surface of the ground a condition similar to a shear cut, 

 using the ground for one edge of the shear. In order to 

 produce this shear cut with the rolling coulter it is 

 necessary to have the coulter high enough to force 



