. American engineer and railroad journal . HEEL DEIVE FROM A CONSTANT-SPEED CROCKER-WHEELER MOTOR. (Horizontal Boring Machine in background at right.)COLLINWOOD SHORE • MICHIGAN SOUTHERN RAILWAY. MARCH, 1903. AMERICAN ENGINEER AND RAILROAD JOURNAL. I06 vided with an automatic down-feed, tlie screw for which isprovided with a graduated collar reading to .001 in. The viseis of a special design in which the fixed jaw extends downto a scraped bearing on the table, thus providing an unusuallylarge footing. Ball bearings are used under the elevatingscrew for the rail, and also th
. American engineer and railroad journal . HEEL DEIVE FROM A CONSTANT-SPEED CROCKER-WHEELER MOTOR. (Horizontal Boring Machine in background at right.)COLLINWOOD SHORE • MICHIGAN SOUTHERN RAILWAY. MARCH, 1903. AMERICAN ENGINEER AND RAILROAD JOURNAL. I06 vided with an automatic down-feed, tlie screw for which isprovided with a graduated collar reading to .001 in. The viseis of a special design in which the fixed jaw extends downto a scraped bearing on the table, thus providing an unusuallylarge footing. Ball bearings are used under the elevatingscrew for the rail, and also the length of the stroke is veryeasily changed while the machine is in motion. The 3(l-in. planer (tool No. 17) illustrated on page 103, aswell as the 54-in. planer (tool No. 15) shown on page 104, aremotor-driven planers built by the Pond Machine Tool Com-pany, the former driven by a 7% multiple-voltage, and thelatter by a constant-speed Crocker-Wheeler motor. Thetable of the latter planer is driven by a train of cut gearing. 60-INCH HORIZONTAL BOKING AND DRILLING CO. DRIVEN BY A MULTIPLE-VOLTAGE ( -NILES TOOL-W. MOTOR. from the motor, located at one end of the bed, to the longi-tudinal splined shaft, which delivers to the two movable heads are thus independently driven, and they haveindependent variable-speed feeds, as well as hand, and rapidl)ower, movements along the bed in either direction. Thismachine has a length of stroke of 21 ins., and a distance be-tween housings of 44-;i ins., with a height under housings ins. The 60-in. Niles horizontal boring and drilling machine(tool No. 18) illustrated on this page presents a splendid ex-ample of a motor application for the drive. The motor, whichis a multiple-voltage Crocker-Wheeler motor, is mountedupon a bracket bolted to the front side of the frame. Thedrive is through a double reduction of gearing which is ar-ranged for two changes of speed by slip gears; these spe
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
