. Railway mechanical engineer . Fig. 7—Tooling of Hand Screw Machine for Making Prosser Flue Expander The stock is fed up to the bar stop held in the first turretposition. (2) Surface A is turned by a cutter held in auniversal turner bolted to the turret face at the secondturret position as shown in Fig 7. (3) Hole C is drilledby a drill held at the third turret position. (4)Hole B is drilled by drill held in fourth turret position.(5) Contour D and groove E are formed by cutters heldin a form block bolted on the front of the cut C B iir- L 1 II- -iBi- ~. Bar StopBracket Bracket Boltedto Head
. Railway mechanical engineer . Fig. 7—Tooling of Hand Screw Machine for Making Prosser Flue Expander The stock is fed up to the bar stop held in the first turretposition. (2) Surface A is turned by a cutter held in auniversal turner bolted to the turret face at the secondturret position as shown in Fig 7. (3) Hole C is drilledby a drill held at the third turret position. (4)Hole B is drilled by drill held in fourth turret position.(5) Contour D and groove E are formed by cutters heldin a form block bolted on the front of the cut C B iir- L 1 II- -iBi- ~. Bar StopBracket Bracket Boltedto Head 6—Stem for Reducing Valve Machined from Steel Bar on Combination Flat Turret Lathe rest turner at the second turret position. (4) Surface Cis taper turned by a cutter held in a taper turner at the thirdturret position. The taper turner is aided by a taper barmade to conform with the taper desired. The bar is held ona bracket which in turn is bolted to the head stock. (5)Surface B is threaded bv a screw cutting die head held at off slide. (6) Hole B is taper reamed by a reamerheld at the fifth turret position. (7) Hole C is taperreamed by a reamer held at the sixth turret position. (8)The work is cut off by a cut-off tool held in an open sidetool post bolted on the rear of the cut-off slide. All opera-tions are completed in 7 minutes. The Reason Why Some Fusion Welds Fail* Hardening Effect of Welding Heat GraphicallyDemonstrated and the Effect of Annealing Shown BY T. D. SEDWICK Engineer of Tests. Chicago, Rock Island & Pacific, Chicago IN ca
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
