. American engineer and railroad journal . tion was originally designed forturning off the rivet head on crank pins, in order to removethem; it is, however, adap of other work. Two bars, with Vs cut in them, fit ovi I thi - rank pin and are drawntogether by the two one-inch boll . clamping the pin firmly. Thebody of the machine is attached to thi base by bolts which passthrough the two adjustable spacing blocks that straddle the crank. The spindle is driven by the handwheel through the two spurgears and a worm and worm wheel. The handwheel may bereplaced by a pulley, electric motor or air dril
. American engineer and railroad journal . tion was originally designed forturning off the rivet head on crank pins, in order to removethem; it is, however, adap of other work. Two bars, with Vs cut in them, fit ovi I thi - rank pin and are drawntogether by the two one-inch boll . clamping the pin firmly. Thebody of the machine is attached to thi base by bolts which passthrough the two adjustable spacing blocks that straddle the crank. The spindle is driven by the handwheel through the two spurgears and a worm and worm wheel. The handwheel may bereplaced by a pulley, electric motor or air drill. Three spindlespeeds are available by interchanging the spur gears or by driv-ing direct without these gears. The spindle has an endwise move-ment of 4 in. and will face up to about i- in. in diameter. Thecutting tool fits in a steel slide in the end of the spindle and isadjustable for different diameters by means of a hand feedscrew at the end of the slide. The spindle is fed endwise by thescrew with a square head at the extreme BORING, TURNING AND FACING MACHINE. The device when clamped in position is firm and rigid, yet eachpiece is light enough to be easily handled by one man in settingthe machine up. It is claimed that at least 70 per cent, of thetime required for chipping off the crank pin rivet head with ahammer and chisel may be saved by the use of this device. Byusing an extra facing attachment it is possible to face off pumpor engine valve seats, it being immaterial whether the steamchest is solid or whether the valve seat is several inches belowthe face of the chest. When used on work of this kind thefeed is operated by a star wheel knocker. For turning, an offsettool is used and it is possible, of course, to turn for compara-tively small lengths only. This machine is made by H. E. Ln-derwood & Co., of Philadelphia. Painting Steel Passenger Cars.—After building a coach en-tirely of steel at great expense so as to safeguard the passengeragainst fire, the b
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
