Locomotive boiler construction; a practical treatise for boilermakers, boiler users and inspectors .. . so that no planing is necessary when the platecomes from the machine. However well a vertical machine may be arrangedfor punching flanges, there is scarcely a boiler shop thatdoes not have one of more horizontal punches. Fig. 309represents a horizontal punch with a circular steel stakeS. The gap is seen to be very .small and .the top of themachine is flush at F. This is necessary when punchingoff the extra metal around a fire door flange. The foot 3i5 Punch with crane attached. treadle is sh
Locomotive boiler construction; a practical treatise for boilermakers, boiler users and inspectors .. . so that no planing is necessary when the platecomes from the machine. However well a vertical machine may be arrangedfor punching flanges, there is scarcely a boiler shop thatdoes not have one of more horizontal punches. Fig. 309represents a horizontal punch with a circular steel stakeS. The gap is seen to be very .small and .the top of themachine is flush at F. This is necessary when punchingoff the extra metal around a fire door flange. The foot 3i5 Punch with crane attached. treadle is shown at T. When these machines are used forpunching holes, a stripper is as essential as on the verticalmachines, so we find a rig like S, Fig. 310, arranged forstripping off the plate. This is adjusted by the screwC for plates of varying thicknesses. ^i ? : IF ^PS rSsSB ^A Figure with attached crane. The dies are held in the stake by headless pointed setscrews. The clearance holes for the punches should belarge enough so that they will not clog up. All these 316 A plate planing 317 Plates held by jacks.
Size: 926px × 2700px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidlocomotivebo, bookyear1912
