. Railway mechanical engineer . ich the grinding blocks are securely dove-tailed. It will be noticed that sufficient adjustment hasbeen provided to allow for practically the entire wear ofthe blocks. It is claimed that the sectional wheel will notgum up, because it throws off through the grooves be-tween the blocks the refuse from the wheel and the metal,which otherwise lieing unrelieved, imbeds itself in the faceof the Wheel, gumming it up, making necessary frequent re-dressing. Due to this chip relieving feature, it is statedtliat continuous fast and heavy grinding may be done witha sectiona
. Railway mechanical engineer . ich the grinding blocks are securely dove-tailed. It will be noticed that sufficient adjustment hasbeen provided to allow for practically the entire wear ofthe blocks. It is claimed that the sectional wheel will notgum up, because it throws off through the grooves be-tween the blocks the refuse from the wheel and the metal,which otherwise lieing unrelieved, imbeds itself in the faceof the Wheel, gumming it up, making necessary frequent re-dressing. Due to this chip relieving feature, it is statedtliat continuous fast and heavy grinding may be done witha sectional wheel of 4-in. width of face, where the limitof face for a solid wheel is usually 11^ in. The grinding machine is heavy and rigid. The mainbed is of cabinet base construction and supports a threeT-slot carriage that travels back and forth on a flat trackin front of the grinding wheel properly gibbed to take upwear. Firmly bolted to this bed at the rear, midway betweenthe ends, is a .short back extension bed at right angles to. Showing Construclion of Sectional or Buill-Up Grinding Wheel the main bed, w-ith wide flat tracks on which a carriage ismounted, suitably gibbed, and arranged with a screw ex-tending through the main bed, operated from the front sideof the machine by a handwheel or b)- automatic feed, or byhand from the back of the machine, to bring the grindingwheel uj) to the work. On top of the carriage is a turret, 364 RAILWAY MECHANICAL ENGINEER Vol. 93, No. 6 pivoted at the center for grinding flat faces or by snivelingaround to grind slight concaves as desired. The grindingwheel spindle is mounted on this turret and is 5J-2 in. indiameter, running in ball bearings both radial and endthrust, with adjustable take-ups for end wear, either forward
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
