Farrow's military encyclopedia : a dictionary of military knowledge . turn nu)unted upon a tripod with a uni-versal joint. The lyliiuler is fed towardthe rock as fast as the steel penetrates tripod legs arc adjustable, and canbe placed lu any position desirable. Theweights are removable. The positive valvemovement insures certain operation whensteam or air is admitted, withiuit depend-ing upon close tils or clean parts. It al-lows of a variation in design between theup and the down stroke, thus economizingsteam and increasing the working capacityof the machine. By a patented feature,the
Farrow's military encyclopedia : a dictionary of military knowledge . turn nu)unted upon a tripod with a uni-versal joint. The lyliiuler is fed towardthe rock as fast as the steel penetrates tripod legs arc adjustable, and canbe placed lu any position desirable. Theweights are removable. The positive valvemovement insures certain operation whensteam or air is admitted, withiuit depend-ing upon close tils or clean parts. It al-lows of a variation in design between theup and the down stroke, thus economizingsteam and increasing the working capacityof the machine. By a patented feature,the valve is moved in the same directionwith the piston. The rotating bar is madefull size where it enters the ratchet, and,unlike the other forms, :t does not piston-rod and chuck, or drill-holder,is made rather small and solid outside ofthe cylinder, whereby a much greater lift-ing power s attained than is ever possible in anyotiur machines of the same diameter of split crank-nut. feed-nut. and adjustabie-slides BOCK DRILL. 746 ROCK DRILI,,. RANDS LITTLE GIANT ROCK DRILL, Mcuiilcd iPii Ilimic I T DrilliiiL; I niumiv ROCKET GAUGES. ROCKETS. provide for liiUiiif; up wear iis fuHt iih it occiirn. Tlic iln liiud jh hiiriiioiiiiUd l<v ii Uil ,luit ; if i-xplonioiillirolllc or slop cock, employed in llic Uiiiid drill Ik | and iiici-iidiiiry i-irccl. \<y aolitlUir uphrrintl oiJu^ ill llic siciiiii clicsl, where il cariiiol hv loHt or to wliicli is iilluclieil u fiiMc, wliicii is wl on (Ire wheninjured in liundliii!;, us ; the ciise where a common il reuelied liy the llamr- of the hnrnin^; eompohi-enlve .illiiched lo the liiwe is nued. The linhlniiif; lion. The hawe Ih perforulid Ijy one or more reitUcoiipliiii;- provides for inslanlaneoiis conneelioii of for the escape of the (,iis ^.eneraled within, andthe hose williriiil, llie use of wrencii or spanner ; il j .sometimes w ilh a screw-liole to which u. )?uidi:-slickdoes uot leak, an
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Keywords: ., bookcentury1800, bookdecade188, booksubjectmilitaryartandscience
