. Railway master mechanic [microform] . surface of each blade is arrangedon the same taper and desired diameters of the cut-ting edges are obtained by either raising of loweringthe blades in the body, the tapered form causing theblades to protrude or recede according to the adjust-ment, which is provided for by the adjusting adjusting collar has a groove turned on its innerface to engage the tongue milled on the end of eachblade. Turning the collar moves all blades simultan-eously, and when the desired adjustment has beenreached the locking collar is turned against the ad-justing co
. Railway master mechanic [microform] . surface of each blade is arrangedon the same taper and desired diameters of the cut-ting edges are obtained by either raising of loweringthe blades in the body, the tapered form causing theblades to protrude or recede according to the adjust-ment, which is provided for by the adjusting adjusting collar has a groove turned on its innerface to engage the tongue milled on the end of eachblade. Turning the collar moves all blades simultan-eously, and when the desired adjustment has beenreached the locking collar is turned against the ad-justing collar. The collars are operated by a spannerwrench provided with each tool. The blades are heldsecurely in position by set screws whose bottoms engagethe surface of a groove milled in one of the side facesof each blade. When it is desired to adjust the bladesthe set screws are given about one-quarter turn to re-lease the blades and after they have been adjusted by thecollar the set screws are again tightened up and theblades are Fig. 1—Universal roughing reamer has no universal body is of machinery steel milled to receive cuttersof high speed tool steel. Each blade has a groove millednear its bottom on a taper with its bottom edge. Setscrews passing through the body of the reamer engagethe edge of this groove securing the blade in place. Itis readily seen that with the taper form of the bottomof the groove and the location of the set screws theiradjustment is rigid and the blades cannot be forced outof position when in contact with the work. The heelsides of the cutters are given ample clearance. Whenthe cutting ends of the blades become worn, adjustmentis provided for by driving them forward from the shank May, 1904. RAILWAY MASTER MECHANIC 167 end of the reamer. This tool is for use in connectionwith cored work where a considerable amount of stockis to be removed without preliminary boring. Whenstarted true this tool will ream a round hole s
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Keywords: ., bookcentury1800, bookdecade1890, bookidrailwaymaste, bookyear1895
