. Railway master mechanic . l socketwill hold the No. 1 sleeve, and also all drills with shanks or 19-32 to S, inclusive; No. 3 sleeve or shellsocket will hold the No. 2 sleeve, and all drills from15 16 to U inclusive: The No. 3 sleeve fits the holein the handle or holder, completing the combinationas s-own in Fig 3. This convenient little tool was gotten up to facili-tate the use of twist drills in the engine lathe. Thecommon practice is to put a dog on the taper shankof the drill, and the not uncommon result is a brokendrill—or sore finger—or both. Machine shops can savethe cost of the
. Railway master mechanic . l socketwill hold the No. 1 sleeve, and also all drills with shanks or 19-32 to S, inclusive; No. 3 sleeve or shellsocket will hold the No. 2 sleeve, and all drills from15 16 to U inclusive: The No. 3 sleeve fits the holein the handle or holder, completing the combinationas s-own in Fig 3. This convenient little tool was gotten up to facili-tate the use of twist drills in the engine lathe. Thecommon practice is to put a dog on the taper shankof the drill, and the not uncommon result is a brokendrill—or sore finger—or both. Machine shops can savethe cost of the tool many times, for, by using it, theywill be able to make one set of drills answer for boththe drill press and the lathe, and in a pinch it willdo equally well for a ratchet. Then, too, after a drillhas been used in a lathe, its shank is in as good acondition as before, and is not ruined by the setscrew of the dog; nor is the long busted by slip-ping oti from the taU cpnter. November, 1890 THERAIL^VAY MASTER Pig. 3. The LlcicUiiid Twist Drill Co., which offers thistool, will carrj but one size (namely, Xo. 3), in stockat present. This size with three shells or sleeveswill hold all drills from i to li inclusive. Othersizes will be made to order only. IKPBOVED UNITEESAL GEIKDINO MACHINE. The Brown & Sharpe universal grinding machinewhich we illustrate herewith, is designed especiallyfor work where accuracy and uniformity are re-quired. It is suitable for both straight and taper,internal and external grinding. It contains severalimprovements over the original machine, notably inits reversing mechanism, its Dner adjustment for thecross feed and its larger bearing surfaces. It isheavier and more rigid, and of a slightly gre<Rercapacity than the No.;! machine of the same com-pany, and its overhead works permit a wide range ofspeeds of wheel and work. Throughout the wholemachine all straight bearings are scraped to surfaceplates, and all cylindrical bearings are fi
Size: 1093px × 2285px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, bookidr, booksubjectrailroadcars
