28 CONTINUOUS CROPPING 



There are different ways of setting the plough, but the 

 simplest of all is as follows : 



First the big wheel is fixed so that it just touches 

 the ground when the plough is resting on a level 

 surface. The big wheel should also be moved out- 

 wards until there is a width of about lo inches between 

 the wheel and the coulter or skin piece when viewed 

 from the front. The small or land wheel should be 

 raised so that it is about 5 inches from the ground 

 when the plough is held level. 



Biq wweeu level with 



BOTTOM OR SOLE. OP 

 PLOUCH 0f HTTL6 WHEEL 

 RAISED :5ms ABOVE IT 



The plough set for opening out. Note the position of the skim coulter 

 ^ and the wheels. 



SETTING THE PLOUGH 



The next point to attend to is the draught. For the 

 opening of the first furrow — and for marking out the 

 headland — ^this should be set in the dead centre and 

 the draught chain raised to about midw^ay in the 

 muzzle. Then the skim coulter is dropped until it is 

 about an inch above the share and slightly inclined 

 backwards. 



On those ploughs with a knife coulter a skim coulter 

 may be dispensed with both for opening out and 

 marking the headlands,. the knife coulter being set with 

 a slight angle backwards a little above and behind the 

 share's point. With this " set " on the plough all that 

 need be done in marking out the headlands is to tilt 



