. American engineer and railroad journal . uck, believing from their experience that no othermethod of holding a bar has ever been devised that will equal diameter. The machine can be arranged for motor drive ifdesired. The cone spindle can be driven ir through the back gears, the sliding wedge which engages the friction through thefingers being operated by the lever A on the front side of thehead. The cone spindle is connected with the main spindlethrough an intermediate shaft carrying a sleeve gear and pin-ion meshing into the two large gears on the main last two gears are loos
. American engineer and railroad journal . uck, believing from their experience that no othermethod of holding a bar has ever been devised that will equal diameter. The machine can be arranged for motor drive ifdesired. The cone spindle can be driven ir through the back gears, the sliding wedge which engages the friction through thefingers being operated by the lever A on the front side of thehead. The cone spindle is connected with the main spindlethrough an intermediate shaft carrying a sleeve gear and pin-ion meshing into the two large gears on the main last two gears are loose on the spindle, and either eanbe i hitched to it as desired by means of the lever B workingthrough a similar friction mechanism to that used on the conespindle. Babbitt is used for the main spindle and thespindle bearings, and the main spindle bearings are -through sight feed lubricators located on top of the front bearing is 8 ins. in diameter by 13 ins. long. Tie-cone spindle has a hole in the centre running almost the entire. in, 1—AUTOMATIC CHUCK LATHE.—BABOONS & OLIVER. in gripping power the so-called spring chuck or collet, provid-ing it is properly designed and constructed. In no other formis the stock gripped equally around the entire circumferenceand the cutting tools brought so near the spindle bearing. Another departure from the ordinary practice is in themethod of supporting the outer end of the bar. There are twousual methods of doing this, one to place a chuck at the rearend of the spindle, necessitating opening and closing sameafter each piece is made, and the other to allow the bar to re-volve freely in a forked bearing or bushing on the upper endof a light support some distance from the rear end of the this machine a heavy guide is bolted rigidly to the rear endof the head, and extending far enough to reach the end of a20-ft. bar when in place in the machine. Sliding on this guideis a carrier, revolving in which is a bushing or ch
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
