SCIENCE OF THRESHING. 71 



can be used advantageously in warm weather, while 

 the lighter grades will be found to run more freely 

 in cold weather and do not thicken as easily. 



Hard oils work well in journals when properly 

 fed. Cylinder oils should be selected in view of 

 standing a high temperature. 



GETTING READY. 



If the machine is one that has been in use the 

 previous year, it should be inspected carefully and 

 every piece put in proper condition to maintain a 

 fall's run, before the time announced as the com- 

 mencement of the threshing season. 



See that every box on the machine is properly 

 adjusted, the worn ones being set up, and if much 

 worn, rebabbitted. A shaft should not be so loose 

 in a box as to rattle or move back and forth much, 

 neither should it be too tight to run easily. The 

 bearings of a shaft which produce or withstand a 

 vibrating or oscillating motion, should have special 

 attention and not be allowed to get loose, as the least 

 play will permit the shaft to pound at each stroke and 

 soon wear flat. This will cause the vibrating or 

 oscillating part to run or work anything but smoothly, 

 and may interfere with its performing its proper 

 work. 



The oil cups should be gone over and the vertical 

 ones should have a piece of waste inserted to retain 

 the oil and keep out the dirt and dust. 



Every belt should be properly laced and stretched 



