. Canadian machinery and metalworking (January-June 1919). FIG. 5—BORING, FACING AND TURNING. FIG. 6—ANOTHER VIEW OF FIRST TURNING OPERATION. January 30, 1919 CANADIAN M A C II I N E It Y 99. FIG. 7-FACING THE BASE. I IG. tions of varying character can be ob-served. Machining the Index Bearing The index bearing is the memberwhich fits on the turned part of thedividing head. One of the rough cast-ings is shown in Fig. 10. The first op-eration when machining this part is a centre in the tail stock of the lathe. A hole is then drilled and reamed in. through the entire length ofthe castin


. Canadian machinery and metalworking (January-June 1919). FIG. 5—BORING, FACING AND TURNING. FIG. 6—ANOTHER VIEW OF FIRST TURNING OPERATION. January 30, 1919 CANADIAN M A C II I N E It Y 99. FIG. 7-FACING THE BASE. I IG. tions of varying character can be ob-served. Machining the Index Bearing The index bearing is the memberwhich fits on the turned part of thedividing head. One of the rough cast-ings is shown in Fig. 10. The first op-eration when machining this part is a centre in the tail stock of the lathe. A hole is then drilled and reamed in. through the entire length ofthe casting. To perform this a special long drill isused, the drill being held and driven bythe lathe chuck and the casting held ona centre in the lathe tail stock. KILLING THE KEifWW manner similar to that obtained whendrilling. The head end. of the casting is thencounterbored to in. to a depth ofW2 inches. The casting is next placed on an arborand the opposite end turned to the boss faced.


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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19