. Railway mechanical engineer . ing up operations are 3/16-in. or ]/i,-m. Swedish firebox work /s-in. rods are used, on tubes ^<^-in. head pin hole, with considerable clearance at th, sides. Onone end the tool has an arm which fits in the tool post of thelathe. The other end carries a removable arm in which thereis a double end cutter held in place by a set screw. Thebody of the tool is passed through the crosshead pin hole,and the removable arm is then placed in position. By usingthe cross feed the inner surfaces can be finished in perfectalinement with the outer surfaces. If the c
. Railway mechanical engineer . ing up operations are 3/16-in. or ]/i,-m. Swedish firebox work /s-in. rods are used, on tubes ^<^-in. head pin hole, with considerable clearance at th, sides. Onone end the tool has an arm which fits in the tool post of thelathe. The other end carries a removable arm in which thereis a double end cutter held in place by a set screw. Thebody of the tool is passed through the crosshead pin hole,and the removable arm is then placed in position. By usingthe cross feed the inner surfaces can be finished in perfectalinement with the outer surfaces. If the clearance of thetool in the crosshead pin hole is not great enough to permitthe entire surface to be finished in one cut, the tool can bebrought back and the removable arm set out to finish thecut. With this tool the time required to machine crossheadscan be reduced considerably. Where nuts are used on theends of piston rods, a tool of this sort will be found useful forfinishinii the bearing surface for the nut on the MOTOR HEAD SPEED LATHE A new speed lathe with ahernating current motor head-stock has recently been placed on the market b} the OliverMachiner) Company, Grand Rapids, Mich. The lathe isdesigned for three-phase, alternating current operation andis called the Oliver No. 51. As shown in the illustration, the lathe is provided with ahand feed carriage and compound swivel rests, but may befurnished with a plain bed in four or five-foot lengths ifdesired. In this case it will turn 24 or 06 in. between cen-ters, respectively. The swing of the lathe is 12 in. and it iswell adapted to work in pattern shops. The motor headstock and ball bearings are totally en-closed, which makes them dust and dirtproof. The rear endof the motor is fitted with a combined handwheel and face
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
