Chambers's encyclopaedia; a dictionary of universal knowledge for the people . Fig. 2.—Back View of do. iron shell were tired at it from a 7-inch gun at 200 yards: the Pal-liser shot excelled tlie others, going clean througli the target, ar-mor and all, and bursting behind. On another occasion, a Pal-liser 115-lb. shot went through the target even at an angle of 80°from the perpendicular. The advantage contemplated in the sandwich fashion of ar-•onor-platiug adopted in the case of the Inflexible and other ships was, in addition tothe increased de-fensive power im-plied in tlie in-creased thick
Chambers's encyclopaedia; a dictionary of universal knowledge for the people . Fig. 2.—Back View of do. iron shell were tired at it from a 7-inch gun at 200 yards: the Pal-liser shot excelled tlie others, going clean througli the target, ar-mor and all, and bursting behind. On another occasion, a Pal-liser 115-lb. shot went through the target even at an angle of 80°from the perpendicular. The advantage contemplated in the sandwich fashion of ar-•onor-platiug adopted in the case of the Inflexible and other ships was, in addition tothe increased de-fensive power im-plied in tlie in-creased thicknessof plating, thatbroader and largerplates of practica-ble weight could bythis means be pro-duced, and thathigher excellenceo t workmanshipcould be insuredto thinner plates,than to plates of 20inches and upwards. Fig. 3.—Section of do., showing the hole made by the 600-lb. shell, and displacement of the upper plate :a, armor plating, i^i in thick (displaced); b, teak back- mg, 18 in. thick ; c, ekin,?^ in. thick; d, wrought-iron beams ; e, platform. of thickness. The Italian Admuality tested on an unprecedentedscale the relatively defensive properties of iron and steel armor, in1876, and decided on the adoption of steel armor, the Builio andDandolo thus being the first steel-plated ships. The next move in armor-plating was with a view to combiningthe superior resistance to perforation characterizing hard steelwith the superior resistance to cracking possessed by tough rollediron; and steel-faced armor—with a front-plate of steel and aback-plate of rolled iron—attained precedence of iron in Englishwar-ships. The hard steel-plate in front resists perforation betterthan iron, breakingup the projectiles, orrendering them unavailing,while the steel and iron plate does not crack
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Keywords: ., bookcentury1800, bookdecade1880, bookidchamberssenc, bookyear1888
