. Railway mechanical engineer . % /V /* V 1% /V tk Tap Developed for Tapping Radial Holes sizes of taps. The use of this tap will also aid in tap-ping a hole at right angles to a given plain surface, fol-lowing the direction of the drilled hole as previouslydescribed. An Easily Made Babbitting FurnaceBY E. A. MILLER For babbitting driving boxes, crossheads and other mis-cellaneous locomotive parts, the babbitting furnace shownhas given exceptionally good service. The furnace A is sup-ported by four y2 in. by 3yi in. by 3yi angle irons and yi 5 in. plates centrally located on each side. T
. Railway mechanical engineer . % /V /* V 1% /V tk Tap Developed for Tapping Radial Holes sizes of taps. The use of this tap will also aid in tap-ping a hole at right angles to a given plain surface, fol-lowing the direction of the drilled hole as previouslydescribed. An Easily Made Babbitting FurnaceBY E. A. MILLER For babbitting driving boxes, crossheads and other mis-cellaneous locomotive parts, the babbitting furnace shownhas given exceptionally good service. The furnace A is sup-ported by four y2 in. by 3yi in. by 3yi angle irons and yi 5 in. plates centrally located on each side. The fur-nace is made of 5/16 in. sheet iron, both sides and ends be-ing stiffened all around by 5/16 in. by 3j _• in. plates rivetedto all the vertical supports. The side sheets and bottom arestiffened by four 5/16 in. by 3 in. angles. There is also areinforcing angle iron all around the top which supports twocast iron babbitt containing pans B and two cast ironplates C. The bottom and sides of the furnace are lined with 3 Babbitting Furnace of Simple Design fire bricks covered with fire clay. A burner D for crude oilis provided; also a vent E. The cast iron pans are l}i and 6J/$ in. deep inside. Removing one or both of thecast iron plates C will tend to cool off the furnace as desired,and they can also be used to preheat certain parts, such asrod brasses, etc. This furnace has given satisfactory serviceand a number similar in construction are now in use. Making a Drill Live Up to Its Reputation Satisfactory Results in the Use of Twist Drills CanBe Secured in One Way Only—by Correct Grinding BY H. WILLS The Standard Tool Company, Cleveland, Ohio WHEN considering the almost human mechanical appli-ances employed in making standard types of twistdrills and the precautions taken in the various opera-tions from the laboratory tests of the steel bars to the finalinspection, it is a fairly safe conjecture that if a drill givestrouble, some of the conditions surroundin
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
