Farrow's military encyclopedia : a dictionary of military knowledge . - in the defenses of Plymouthand Portsmouth. In 1864, a line of iron-clad fort wasbuilt up at Shoeburyness, to test several modes ofconstruction. In the same year, the Russian Gov-ernment employed the Millwall Company to build aw rought-iron an experiment for the defensesof Cronstadt. The front was made of 12 in. thick ofiron in horizontal bars; this was backed by 14 in. ofthickness in upright bars ; and the whole strength-ened with enormous struts, brackets, ribs, and dove-tails of iron. The shield was to form the
Farrow's military encyclopedia : a dictionary of military knowledge . - in the defenses of Plymouthand Portsmouth. In 1864, a line of iron-clad fort wasbuilt up at Shoeburyness, to test several modes ofconstruction. In the same year, the Russian Gov-ernment employed the Millwall Company to build aw rought-iron an experiment for the defensesof Cronstadt. The front was made of 12 in. thick ofiron in horizontal bars; this was backed by 14 in. ofthickness in upright bars ; and the whole strength-ened with enormous struts, brackets, ribs, and dove-tails of iron. The shield was to form the facing orarmor for a battery of three of Krupps 600-poundersteel guns, and measured 43 ft. by 10. The shield,with its foundation-plate, weighed 140 tons. Inone experiment at Shoeburyness, a plate 13 in. thickwas placed in front of a mass of granite 14 ft. thick,and tired at with 200-poiinders; ifour shots crackedthe granite, although the plate was not pierced. The. Fig. 1.—Front View of Wiirrior target, after practicewitli COO-pouiider Armstrong Gun. Americans made an experiment in Chesapeake Bay,in September, 1866, on a temporary fortification,madeof enormous granite blocks faced with 10 in. armor;shots of 4:M) and 630 lbs. were fired from the Hoilmanguns, at a range of about yards, and eleven suchshots destroyed the whole fabric. The Thinirlererwas titled up as aliirgct-slii]iat Iortsmoutli, ])artly totest very thick plates at very short distances. The plateu were fastened to an enormous bulkhead nearone end of the ship, and the guns placed near theother end. On one special occasion, a Palliser 115-lb. chilled shot, with an extra charge of powder tiredat 25 ft. ofT, went clean through a 7-in. plate and 45in. of teak bulkhead. On another occasion soon after-wards, a nereides target, with a 9-in. plate, was tiredat with an 8-in. spherical shot at 30 ft.; the sliot madea dent 2j in. deep, but did not further disturb theplate. The 24-in. ar
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Keywords: ., bookcentury1800, bookdecade188, booksubjectmilitaryartandscience
