. American engineer and railroad journal . Cv.,J 11 ii z^ |T Jnil: 3 ~T FIG. 1.—TURNING ECCENTRICS UN BORING MILL. bing the eccentrics. A is a special brace for stiffening thistool holder, C is the mandrel, B-B are parting rings. In hand-ling the eccentrics they are first planed and drilled and thenplaced in the chuck and bored, after which they are taken toa slotter and key-seated. They are then taken back to theboring mill, slipped on the mandrel, turned and webbed. Withthis arrangement three eccentrics are bored out per hour ortwo can be turned. The chuck can be designed to take careof ecce
. American engineer and railroad journal . Cv.,J 11 ii z^ |T Jnil: 3 ~T FIG. 1.—TURNING ECCENTRICS UN BORING MILL. bing the eccentrics. A is a special brace for stiffening thistool holder, C is the mandrel, B-B are parting rings. In hand-ling the eccentrics they are first planed and drilled and thenplaced in the chuck and bored, after which they are taken toa slotter and key-seated. They are then taken back to theboring mill, slipped on the mandrel, turned and webbed. Withthis arrangement three eccentrics are bored out per hour ortwo can be turned. The chuck can be designed to take careof eccentrics with a maximum throw, and can be fitted withset screws for adjusting it for other designs. Fig. 3 shows a jig for drilling the driving wheel and eccen-tric keyways. The jig is slipped over the axle with the driv-ing wheel keyway hole D central with a line scratched longi-
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
