. Railway mechanical engineer . Fig. 1—Graham No. 41 Knee Type Ring Wheel Grinder head is set perfectly straight, which greatly increases thecapacity of the machine, and sparks will fly down at thearrow and upward on the opposite side. The table block sets on the knee and has gibs fitted formovements in two directions. It is also fitted carefully withan adjustable nut that takes the cross-feed shaft and hand-wheel. This is indexed in thousands and regulates the depth of the cut. Ample oiling provision has been made as it isimportant to have the slides well lubricated. A specialfeature of the d
. Railway mechanical engineer . Fig. 1—Graham No. 41 Knee Type Ring Wheel Grinder head is set perfectly straight, which greatly increases thecapacity of the machine, and sparks will fly down at thearrow and upward on the opposite side. The table block sets on the knee and has gibs fitted formovements in two directions. It is also fitted carefully withan adjustable nut that takes the cross-feed shaft and hand-wheel. This is indexed in thousands and regulates the depth of the cut. Ample oiling provision has been made as it isimportant to have the slides well lubricated. A specialfeature of the design is the provision of felt-packed dustcollars to protect all running parts. Protected glass oilersindicate the height of the lubricant. The abrasive ring holder is made with a heavy hub orcenter upon which a body of pressed steel, accurately ma-chined, is fastened. The large portion of the center contains. Fig. 2—Rear View of Graham Grinder Showing Tank a setting-out nut with flange behind the abrasive ring toprovide compensation for wear. The outside diameter ofthe abrasive ring is caught by a cone-shaped clamp ring drawnby several bolts into a taper machined in the body. Theabrasive ring is 12 in. outside diameter, plus or minus .005in., the height when new being 3 in. arid when worn Y^ less. Speaking of the machine as a whole, many modificationscan be made, magnetic chucks furnished and automatic crossand table feeds applied. The height to the center of thespindle is 42 in., the table working surface being 10 in. by24 in. and the weight of the machine 2,000 lb. For lightwork a 5-hp. motor is required driving the spindle at 1780r. p. m. which gives a surface speed of 3700 ft. per a neutral surface 8 in. in diameter. Chuck Used With Broken Twist Drills A DEVICE which makes possible the utilization of twistdrills, broken at the shank, has recently been developedby the Way
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
