. American engineer and railroad journal . to long pipe-straighteningrolls and is operated by a shoe pro-vided with anti-friction rollerswhich slide in a slot. Straight workcan be turned by disengaging thenut which holds the shoe and bytightening the cross feed nut. Theconcaving rest shown in the sameview is interchangeable with thecompound rest, and is used forgrooving out pipe welding rolls. Itoperates with rotary motionthrough worm and worm wheel,with either hand or power feed. The heavy housings shown arefor holding heavy pipe roll cast-ings. This lathe is built by theAmerican Tool Works C
. American engineer and railroad journal . to long pipe-straighteningrolls and is operated by a shoe pro-vided with anti-friction rollerswhich slide in a slot. Straight workcan be turned by disengaging thenut which holds the shoe and bytightening the cross feed nut. Theconcaving rest shown in the sameview is interchangeable with thecompound rest, and is used forgrooving out pipe welding rolls. Itoperates with rotary motionthrough worm and worm wheel,with either hand or power feed. The heavy housings shown arefor holding heavy pipe roll cast-ings. This lathe is built by theAmerican Tool Works Co., of Cin-cinnati. ^7*2. ^ VIEW LOOKING DOWN ON 60-INCH ROLL-TURNING LATHE. Speed of Steam Turbines.—Highspeed of rotation has been a ratherserious drawback to the steam tur-bine as applied to marine has been overcome in design-ing the machinery for the new Cu-narders, the turbines of which areexpected to run at about 140 appears to be an importantfeature of present development ofthe turbine for marine 60-INCH ROLL-TURNING LATHE—AMERICAN TOOL WORKS COMPANY. silent chain, as shown. Releasing the small knobs in either ofthe handles on the front of the headstock hood allows themto be thrown to the right or left, thus operating the clutcheswhich control the different runs of gearing in the speed changes, in addition to those furnished by themotor, afford a wide range of speed with a large number ofsteps. / inoex plate, prominently placed, indicates the propercombination to be used for any desired spindle speed. Themotor controller is place alongside the motor stand and isoperated by the hand wheel at the right hand end of the car-riage. Contributions to the Pukdue Museum.—-The New Haven & Hartford Railway, through the courtesy of Higgins, general manager, has arranged to place inthe care of Purdue University the historic locomotive, DanielNason. This locomotive was built about 1858, and is one ofthe 8-whee
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
