Browsing named entities in Comte de Paris, History of the Civil War in America. Vol. 1. (ed. Henry Coppee , LL.D.). You can also browse the collection for Rodman or search for Rodman in all documents.

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Comte de Paris, History of the Civil War in America. Vol. 1. (ed. Henry Coppee , LL.D.), Book III:—the first conflict. (search)
three to four and a half inches in diameter, and made of wrought-iron bars. The problem regarding the construction of guns of large calibre was solved by Captain Rodman, whose process imparted such strength to those guns, although made of cast iron, that it only required the application of the Parrott system of plate bands tof liquid, not able to contract regularly, became crystallized, leaving here and there in the mass hollows or flaws which caused the metal to lose its uniformity. Rodman reversed the operation, and caused the piece to cool from the interior. A hollow cylinder, containing a spiral tube through which a current of cold water was keptallizing thus, its fibre offered the greatest possible resistance to pressure upon the bore. A long experience has fully confirmed the principles upon which Captain Rodman had based his new process, which is now applied on a large scale in America. The depth and the number of the riflegrooves varied according to the calibres, b
Comte de Paris, History of the Civil War in America. Vol. 1. (ed. Henry Coppee , LL.D.), Book IV:—the first autumn. (search)
rly appropriated the invention of General Paixhans. The substitution of the shell for the solid ball imparted to the naval artillery a destructive power unknown until then, which soon required the construction of iron-clad vessels. They applied themselves to manufacturing guns of heavier calibre and longer range than those in use on European ships. They succeeded; and the howitzer to which Captain Dahlgren gave his name was in 1861 the most powerful arm afloat. Thanks to the invention of Rodman, the Americans had been able to cast iron guns which, notwithstanding a calibre of twenty-eight or thirtyone centimetres, had a remarkable power of resistance. They could throw without effort, and by means of very light charges of powder in proportion to their calibre, a heavy weight of iron in the form of hollow projectiles of enormous size, whereas no cast-iron gun could have overcome the inertia of a solid ball of the same weight without the risk of bursting. The Dahlgren shell possesse