ADJUSTING HORSE PLOWS 187 



Every few years plow manufacturers change the 

 angle of the beam in relation to the furrow simply 

 because of the lack of knowledge of this one funda- 

 mental part in hitching to walking plows. 



If a walking plow cuts 14" the point where the double- 

 tree is attached to the plow must be immediately in 

 front of the landside, which is 21" to the center of the 

 previous furrow. This would make a doubletree with 

 the two outside holes 42" apart. 



To pull the plow straight forward the efforts of the 

 two horses combined must make a straight line parallel 

 with the furrow wall the width the plow bottom is 

 cutting. If the clevis pin is too far to the right of this 

 imaginary line the plow bottom of a right-hand plow will 

 immediately begin to move to the left until this line is 

 straight. This is the reason why the plow takes more 

 land. 



Obviously if the clevis pin is hitched too far to the 

 left of this center the plow will take less land. 



When a walking plow is properly adjusted it can be operated without 

 the operator holding to the handles. The test of a man's ability to 

 adjust a walking plow and sharpen the share is to make that plow 

 operate correctly without holding the handles. 



