146 FARM MECHANICS 



Clearing the Land pulling up bushes by the roots, 

 tearing out hedges, pulling stumps, grubbing, pulling 

 stones. 



Preparing Seed Bed and Seeding plowing, disking, 

 crushing clods, pulling a land plane, rolling, packing, 

 drilling, harrowing. 



Harvesting mowing, pulling grain binders, pulling 

 potato digger. 



Belt Work hay baling, corn shelling, heavy pump- 

 ing for irrigation, grinding feed, threshing, clover 

 hulling, husking and shredding, silo filling, stone 

 crushing. 



Road Work grading, dragging, leveling, ditching, 

 hauling crops. 



Miscellaneous running portable sawmill, stretch- 

 ing wire fencing, ditch digging, manure spreading. 



Generally speaking, however, the most important 

 farm tractor work is preparing the seed-bed thoroughly 

 and quickly while the soil and weather conditions are 

 the best. And the tractor's ability to work all day and 

 all night at such times is one of its best qualifications. 



To plow one square mile, or 640 acres, with a walk- 

 ing plow turning a twelve-inch furrow, a man and 

 team must walk 5,280 miles. The gang-plow has al- 

 ways been considered a horse killer, and, when farmers 

 discovered that they could use oil power to save their 

 horses, many were quick to make the change. 



It requires approximately 10 horsepower hours to 

 turn an acre of land with horses. At a speed of two 

 miles, a team with one plow in ten hours will turn two 

 acres. To deliver the two horsepower required to do 

 this work, they must travel 176 feet per minute and 

 exert a continuous pull of 375 pounds or 187.5 pounds 

 per horse. 



