Hutton, Frederick Remsen, 1853-1918 · New York, J. Wiley & sons; London, Chapman & Hall, limited · leaf 446
ich a hard and tough steel cylinder comesdown upon the plate supported upon an abutment or femaledie having a hole in it slightly larger than the punch (Fig.325). The punch shears its way through the supported plate THE STEAM-BOILER. GENERAL CONSTRUCTION. 391 and extrudes a blank of the punched… … Fig. 324. laminated structure such as wrought iron has, it is largely thereaction of the abutment or die which limits the lateral spreadof the tearing effect. The extruded blank is conical, sincethe die is larger than the punch in order to free the latterand pass the blank.* The punching-presses…
Mechanical engineering · Steam power plants
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