. Railway mechanical engineer . Ut loss of time. Two shell reamers of high speed steel, both. Fig. 2—Chuck for Repairing Worn Air Pump Check Valve Caps Hitting the same machine steel arbor, are used with this larger one sizes the head for the bushing, which is applied■with a press fit. After the bushing is applied the smallerreamer is used to finish it on the inside. The bushings are 1 11/Ui in. in length ,and 2 7/16 in. oulsi<le diameter, the fin-ished inside diameter being 2/ii in. When worn more than1/32 in. they are removed and new bushings applied. Iig. 2 shows a chuck used i
. Railway mechanical engineer . Ut loss of time. Two shell reamers of high speed steel, both. Fig. 2—Chuck for Repairing Worn Air Pump Check Valve Caps Hitting the same machine steel arbor, are used with this larger one sizes the head for the bushing, which is applied■with a press fit. After the bushing is applied the smallerreamer is used to finish it on the inside. The bushings are 1 11/Ui in. in length ,and 2 7/16 in. oulsi<le diameter, the fin-ished inside diameter being 2/ii in. When worn more than1/32 in. they are removed and new bushings applied. Iig. 2 shows a chuck used in reclaiming worn check valvecaps from the air cylinders of 9/2-in. air pumps. The chuckis bored to fit over a small face plate to which it is secuiedby means of two J/^-in. cap screws. A hole is bored throughthe center and threaded so that the cap may be screwed in fromeither the front or back. The illustration shows the checkscrewed in from the back to have the valve stop faced off andto be drilled through the center for the dowel. The dowels aremade on a turret lathe from 1 in. rou
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
