BABBITTING BOXES. 217 



babbitt and with a round-nose chisel cut oil grooves from the 

 oil hole toward the ends of the box and on the slack side of 

 the box or the one opposite to the direction in which the 

 belt pulls. The shaft may be covered with paper, as ex- 

 plained for a solid box, but if this be not done, the babbitt 

 should be scraped to fit the shaft. 



The ladle should hold eight or ten pounds of babbitt 

 metal. If much larger it is awkward to handle and if too 

 small it f will not keep the metal hot long enough to pour a 

 good box. A cast-iron ladle will keep the metal hot longer 

 than a wrought-iron or steel one. The 20 bar cylinder boxes 

 each take about six pounds of metal, and the 12 bar cylinder 

 boxes each take two to three pounds. If no putty is at 

 hand, clay mixed to the proper consistency, may be used. 

 Use the best babbitt you can obtain for the cylinder boxes. 



