Press-working of Metals

action angle annealing axial section bench press bending blades blank bolster bottom brass chapter chuck clamped coining column common conical corner course crank curling cutting cylindrical device diameter drawing process driven drop press drop-forging edge embossing fastened feeding flange flat flow friction gauge numbers given hammer hole hydraulic press inch instance iron kind knockout lever lower lower die machine material measuring mentioned metal method motion mounted N Gauge notches OBERLIN SMITH obviously operation ordinary perhaps piece planchet plunger points position power press practical press frame press-work pressure required principle proper punch pushed re-drawing ring round screw shaft shape shear-blades shearing sheet sheet-metal shown a pair shown in Fig side sliding sometimes speed spring square steel stripper stroke surface tensile tensile strength tensile stresses thereof thickness thin tin-plate tion top view uniform upper upper die usually various vertical wire wrinkles