. Railway mechanical engineer . Keller Master Valveless Air Drill economical in air consumption. These features should, ofcourse, be reflected in the cost of maintenance and the amountof time that the drills will be out of service for repairs. Four single-acting pistons are arranged in pairs at rightangles, each pair connected to opposite wrists of the crankshaft. This is said to insure smooth running and freedomfrom vibration. The one-piece cylinder body is providedwith handhole openings which are covered with removableplates, affording ready access to the crank connections. Theconnecting rod
. Railway mechanical engineer . Keller Master Valveless Air Drill economical in air consumption. These features should, ofcourse, be reflected in the cost of maintenance and the amountof time that the drills will be out of service for repairs. Four single-acting pistons are arranged in pairs at rightangles, each pair connected to opposite wrists of the crankshaft. This is said to insure smooth running and freedomfrom vibration. The one-piece cylinder body is providedwith handhole openings which are covered with removableplates, affording ready access to the crank connections. Theconnecting rods and pistons are made of vanadium steel; Sure-Lox Pneumatic ChippingHammer bearing where it joins the crank shaft, thus protectingthe spindle and the casing from heavy stresses whenused on severe work or when the drill is used in a hori-zontal position. These drills are built in non-re-versible or reversible types, including a reversible woodboring machine and a reversible grinder. Sure-Lox Pneumatic Chipping HammerThe new typ
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
