. Railway mechanical engineer . Ingersoll-Rand Close Quarter Drill use lieavy pneumatic tiKils for light work and the lightweight,high speed machines described in this article are welladapted to railway shop work often done with heavier equip-ment. The close quarter drill is for use in a limited space close. High Speed Pneumatic Grinders to a wall or corner. This new machine has a fairly highspeed, running at 250 without load, but will handledrilling, reaming or tapping up to lj4 in. diameter. Thetool is specially designed throughout for close quarter work and lias several unique featur
. Railway mechanical engineer . Ingersoll-Rand Close Quarter Drill use lieavy pneumatic tiKils for light work and the lightweight,high speed machines described in this article are welladapted to railway shop work often done with heavier equip-ment. The close quarter drill is for use in a limited space close. High Speed Pneumatic Grinders to a wall or corner. This new machine has a fairly highspeed, running at 250 without load, but will handledrilling, reaming or tapping up to lj4 in. diameter. Thetool is specially designed throughout for close quarter work and lias several unique features. The spindle which turnsthe drill, reamer or tap, is operated by three rocking leversconnected directly to the pistons through connecting motor is of the three cylinder type with pistons actingat right angles to the levers. A steady, continuous move-ment of the .spindle is obtained, as one ratchet pawl is al-ways in contact with a tooth of the spindle. The construc-tion is simple and sturdy, with the least number of parts con-sistent with approved design. The No. 601 and No. 602 grinders run with a free speedof 4200 and are suitable for grinding, bufiing orpolishing work of a varied nature. Each machine has thesame t\pe of motor, but is equipped with a different throt-tle and handl
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
