SCIENCE OF SUCCESSFUL THRESHING 



sufficient length to take the lug on the bottom of the pump 

 body. This avoids the necessity of boring a hole into the 

 steam chest ; but in all cases, it is best to have the pump- 

 body rest on the steam chest, for by this method, the oil is 

 kept warm and fluid in cold weather. 



To Attach the "Swift" Lubricator. The lubricators 

 have a little brass pipe extending beyond the shank as 

 shown in the cut at H. This pipe discharges the oil and 

 must extend into the interior of the steam-pipe or the lub- 

 ricator will not work. If lost out or injured, it must be 

 replaced. In case the lubricator does not work properly, 

 examine this pipe. 



To Operate "Swift" Lubricator. 

 Close valves E and G, remove cap F 

 and fill the oil reservoir full of oil to 

 the very top. Replace cap F. The 

 bright plate that shows the sight feed 

 should be completely covered with oil. 

 Now open valve E about one-half 

 turn, then open valve G very care- 

 fully and drops of water will com- 

 mence to roll down over the bright 

 plate; avoid opening too wide, as a 

 FIG. 13- "SWIFT" stream could be run over the plate 



LUBRICATOR. 



and the oil wasted. When the oil is 

 nearly exhausted from the cup, water commences to show 

 at the bottom of glass D, and gradually rises until it reaches 



