. Railway mechanical engineer . ustablebronze bearings and carries a wheel 4 in. in diameter, 54in., face with a ^-in. hole. The bracket carrying the motorand wheel spindle is mounted on a vertical housing and isadjusted by a screw provided with a micrometer dial. Arbors for holding the work are held in a sleeve whichrevolves freely in the work holding posts. Four posts arefurnished with No. 9 and No. 7 Brown & Sharpe tapers,one with a J/2-in. straight hole and one flat block for hold-ing flat tools, in order to cover all classes of work capableof being done on the machine. The posts fit into
. Railway mechanical engineer . ustablebronze bearings and carries a wheel 4 in. in diameter, 54in., face with a ^-in. hole. The bracket carrying the motorand wheel spindle is mounted on a vertical housing and isadjusted by a screw provided with a micrometer dial. Arbors for holding the work are held in a sleeve whichrevolves freely in the work holding posts. Four posts arefurnished with No. 9 and No. 7 Brown & Sharpe tapers,one with a J/2-in. straight hole and one flat block for hold-ing flat tools, in order to cover all classes of work capableof being done on the machine. The posts fit into three T-slots in the upper compound slide, thus providing for awide range of work. The two upper slides are used tobring the work in the proper sweep across the face of thewheel, and are in turn mounted on a swivel block, which ispivoted to the bottom slide. The maximum radius that can be ground is 3 in. oneither concave or convex cutters up to 12 in. in gage is furnished to set the work in the proper relation to. Motor Driven Profile Grinder the wheel and when the slide is set for any given radius themachine will always grind that radius regardless of the con-tinued adjustment of the two upper slides. A simple and jdS RAILWAY MECHANICAL EXGIXEER L. 93, No. 6 convenient tooth rest is furnished with range enough to cover are accurately scraped and provided with gibs for taking upall work within the capacity of the machine. All scews the wear. The machine occupies a bench space of 24 provided with readable micrometer dials and the slides by .50 in. and weighs 217 lb. A HIGH POWER MULTIPLE SPINDLE DRILL THE multiple spindle drill shown in the illustrationis a heavy service production tool especially intendedfor use in locomotive and railway shops and willbe found useful where the work includes heavy gang drillingor heavy jig drilling. When used on jig work tlie compact-ness of this drill enables one operator to keep a greaternumber of spindles—either singly or
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
