. Railway mechanical engineer . time with all theirother duties to see that their instructions are carried out. Inaddition to this, the proper attention to the superheatersometimes prevents just what tiie engine house foreman isendeavoring to do—turn his locomotives in the least possibletime. This he will do regardless of the superheater equip-ment unless there is a check placed upon him. So, in these strenuous war times when everyone, even tohouseholders, are endeavoring to save coal, we would urgethe railroad managements to provide the necessary addi-tional money to protect their investments
. Railway mechanical engineer . time with all theirother duties to see that their instructions are carried out. Inaddition to this, the proper attention to the superheatersometimes prevents just what tiie engine house foreman isendeavoring to do—turn his locomotives in the least possibletime. This he will do regardless of the superheater equip-ment unless there is a check placed upon him. So, in these strenuous war times when everyone, even tohouseholders, are endeavoring to save coal, we would urgethe railroad managements to provide the necessary addi-tional money to protect their investments and to carr\- out toa greater degree the purpose for which the superheater wasdesimed. MACHINES FOR MILLING PISTONRODS KEYWAYS It is the practice in many shops to use end mills for cut-ting the slots for crosshead keys in piston rods. Since suchtools caimot take a hea\y cut this method is rather slow. Tosecure better output on this work a helical milling cutter isused at the Topeka shops of the .\tchi50n, Topeka & Santa. Milling Slots for CroEshead Keys In Special Machine Fe, and a special machine has also been developed recentlywhich makes it possible to perform the entire operation atone setting. The machine consists of a rigid base on which is mounteda standard for supporting the cutter and the air motor whichdrives it, and a carriage for feeding the work. The carriage,as shown in the drawing below, has a dovetailer .^lot to fit the table and two V-blocks for holding the rods. The stand-ard consists of two vertical rods, securely braced, with twocross pieces at the bottom for supporting the cutter and an-other near the top fitted with a feed screw and hand wheelfor supporting the air motor. The spindle for the cuttercarries a pulley which is belted to a larger pulley on a ver-
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
