PROJECTS IN FARM MACHINERY REPAIR 299 



chinery in repair, and the practice is of untold value to every 

 student who later is to farm for himself. 



The projects in this chapter are arranged in six groups ac- 

 cording to the general type of machine. Additional minor 

 groups might be added, but these are the machines in which 

 all farmers are interested: First, tillage machinery; second, 



.Handles 



Braces 



Detachable Shin Piece 

 Beam 



Clevt 



^s^r^n^^k, 



Moid board 



Gauge 

 Wheel 



FIG. 314. Walking plow. 



planting machinery; third, fertilizer distributors; fourth, har- 

 vesting machinery; fifth, belt-driven machinery; sixth, sta- 

 tionary engines and tractors. Projects in the repair of only 

 one or two machines in each group are outlined. 



268. Repair and Adjustment of Tillage Machinery. 

 (Fig. 314.) 



Requirements: To repair and adjust ready for field use the 

 chief tillage machines, including plows, harrows, rollers 

 and cultivators. 



Tools Needed: It is well to have access to a complete set of 

 shop tools. The exact number of tools required will be 

 determined by the repairs needed. 



Preliminary Instruction: The plow is the principal imple- 

 ment in the preparation of the seed bed. Because it is 



