The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . SELLERS H KOLUS FOK KEN1>LN(_ cheaper than hardened steel, and the increased weightnecessary to afford the same protection is an advantagerather than otherwise. Compound plates have been madelargely by the Wilson process. This consists in the cast-ing of Bessemer steel in an iron mould, the back of themould adhering to the cast steel, so that the two becomeone, and are rolled together to complete the welding. Theplate is then bent, shaped, tempered, and annealed to re-. THE ONE-ni&g
The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . SELLERS H KOLUS FOK KEN1>LN(_ cheaper than hardened steel, and the increased weightnecessary to afford the same protection is an advantagerather than otherwise. Compound plates have been madelargely by the Wilson process. This consists in the cast-ing of Bessemer steel in an iron mould, the back of themould adhering to the cast steel, so that the two becomeone, and are rolled together to complete the welding. Theplate is then bent, shaped, tempered, and annealed to re-. THE ONE-ni>DRED-AND-T\VENTY-FIVE-TON HAMMER, BETHLEHEM IRON WORKS. RECENT PROGRESS IN GUNS AND ARMOR. Ill move internal strains. Wilson lias also employed a similarprocess, in which a series of thin iron plates, made by theordinary process of rolling, are joined in a mould by pour-ing molten steel between them and subjecting to furtherrolling and shaping, as in the first-described i)rocess. TheEllis system of making compound plates consists in takingan iron and a steel plate, and joining them by puttingthrough or partly through stout pins of about two and ahalf inches diameter. The plates are then heated quitehot, and molten steel poured in the crack, after which thewhole is placed in a powerful hydraulic press and reducedin thickness to complete the union. It is then bent, planed,tempered, and annealed as in the Wilson process. In making forged steel armor at the Bethlehem IronWorks, South Bethlehem, Pennsylvania, immense ingotsof steel are first cast, then conveyed when nearly co
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Keywords: ., bookcentury1800, booksubjectmachinery, booksubjectmechanicalengi
