Hutton, Frederick Remsen, 1853-1918 · New York, J. Wiley & sons; London, Chapman & Hall, limited · leaf 441
one process two cast-iron formers are used,one male and one female. The disk is heated uniformly allover, and when at proper temperature is laid upon the top ofthe hollow female die. The male die descends concentricwith the other by hydraulic pressure, and forces the plate tobend up uniformly all… … Fig. 322. plate is held at a proper temperature between the faces of ahydraulic vise, while pressure comes radially upon the edgeof the disk from hydraulic cylinders which carry shaping- THE STEAM-BOILER. GENERAL CONSTRUCTION. 387 heads and bend down the edge gradually until the disk fitsthe former…
Mechanical engineering · Steam power plants
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