76 .FARM MACHINERY 



side, either the hitch or the clevis should be adjusted or 

 the amount of bearing given at the heel or wing is 

 too great or too small. It should be seen that the point 

 is-well turned down and never allowed to become round- 

 ing. If it becomes much worn, new metal must be added. 

 It is desirable to maintain the original amount of suction 

 and the distance from point of share to point of beam ; 

 in fact, the entire form of the plow should be maintained 

 as nearly as possible in its original condition, providing it 

 worked satisfactorily when new. 



As given in former data, a large proportion of the draft 

 is due to the cutting of the furrow. This shows the im- 

 portance of keeping the cutting edge sharp. It has also 

 been stated that if after being sharpened the share is 

 hardened, the cutting edge will be retained longer. 



114. Adjusting the sulky plow. The land wheel of a 

 three-wheel sulky or gang plow should travel directly to 

 the front, but often, owing to bad adjustment, it is re- 

 quired to slip occasionally, because it is traveling at an 

 angle with the direction of the plow's motion. The rear 

 furrow wheel is usually given a small "lead" from the 

 land, i. e., it is turned out a little from the unplowed land. 

 This wheel should also be set an inch or so outside of 

 the line of the landside, in order to remove the friction 

 from this part as much as possible. The front furrow 

 wheel is given "lead" from the land with the single plow, 

 and toward the land when the team is hitched abreast on 

 gangs. This difference in the latter case is because the 

 line of draft is outside the line of work, and the plow is 

 made to travel directly to the front by the front furrow 

 wheel being turned in. 



In any wheel plow the load should be carried as much 

 as possible on the wheels in order to reduce the draft. 

 There should be a reduction in draft when the entire load ; 



