. Railway mechanical engineer . ilyadjusted to the work to be ground. The throw, or arc ofoscillation, can be adjusted up to six inches, which permitsof handling work up to 12 in. in diameter. The table isoscillated by a crank disk, driven by a worm and worm gear,insuring a firm and steady motion. Six changes of feed aresecured by means of a three-step cone pulley on the machineand a two-speed countershaft. The grinding wheel head is fitted to a saddle, secured tothe main part of the column by a dovetail slide, and gibbedto provide adiustment for wear. The adjusting screw fortlie saddle is pro
. Railway mechanical engineer . ilyadjusted to the work to be ground. The throw, or arc ofoscillation, can be adjusted up to six inches, which permitsof handling work up to 12 in. in diameter. The table isoscillated by a crank disk, driven by a worm and worm gear,insuring a firm and steady motion. Six changes of feed aresecured by means of a three-step cone pulley on the machineand a two-speed countershaft. The grinding wheel head is fitted to a saddle, secured tothe main part of the column by a dovetail slide, and gibbedto provide adiustment for wear. The adjusting screw fortlie saddle is provided with n micrometer dial. The grind-ing wheel head is pivoted and can be turned to any desired < 1 t P Fig. 1—Cleveland Production Face Grinder. vided, and a wheel guard large enough to accommodate8-in. grinding wheels is made a part of the machine. The work head is secured to the wing of the column bymeans of a dovetail slide and rests on its own saddle, whichhas longitudinal adjustment of 6 in. The saddle is attached. Fig. 2—Tlie Arc of Oscillation Is Easily Adjustable. to the column by a hand clamping screw, tlius providingeasy adjustment, and a gib makes this slide adjustable forwear. The machine will accommodate work 6 in. in thickness%vithout overhang of the saddle. B) making proper allow-ance for saddle overhang it is possible to handle work up to December, 1919 RAILWAY MECHANICAL ENGINEER 741 10 or more inches in thickness. The work is pivoted on thesaddle and can be swung to any angle. The work spindle is e.\tra large, made of special steel,hardened and ground, and has a No. 11 Brown & Sharpetaper hole. The spindle bearings are of phosphor bronze,and are adjustable for wear. The nose of the spindle isthreaded to receive a 10-in. face plate, which has two7/16-in. T-slots at right angles, permitting rapid clampingof the work. Careful consideration has been given to lubri-cation and protection from dust. The four spindle bear-ings are provided with large sight-
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
