. American engineer and railroad journal . llest inside diameter of stack 16* Height from top of rails to center of boiler — 7 V NOTES AND NEWS. The Cincinnati.—The cruiser Cincinnati is now in com-mission, although .she is still in the hands of the is expected That she will be ready fur a sea cruise short];after the first of this month. The dock trials of the enginestook place a few weeks ago, and were very satisfactory. Corrosion of Water Pipes. —Considerable interest has beenmanifested lately, especially in the neighborhood of Boston,in the corrosion which has been brought abou
. American engineer and railroad journal . llest inside diameter of stack 16* Height from top of rails to center of boiler — 7 V NOTES AND NEWS. The Cincinnati.—The cruiser Cincinnati is now in com-mission, although .she is still in the hands of the is expected That she will be ready fur a sea cruise short];after the first of this month. The dock trials of the enginestook place a few weeks ago, and were very satisfactory. Corrosion of Water Pipes. —Considerable interest has beenmanifested lately, especially in the neighborhood of Boston,in the corrosion which has been brought about in gas andwater pipes through the effects of electrolysis arising from theuse of the rails on street railways for the return current wherethe trollev system is iu use. It was found that the electrolyticaction which was destroying the gaa in water pipes occurredwhere the current entered or left the pipes. made in order to overcome this, t Ine was to connectground plates with the manholes, and so transfer the _:< S5 as- Ed O n o o aso 6< Vol. LXVIII, No. 8.] AND RAILROAD JOURNAL. 349 lytic action to these plates. Insulation of the cables and pipeswas also proposed, but nothing satisfactory has yet been de-vised to overcome the difficulty. Trial of Harveyized Armor Plate.—A recent trial of Har-veyized armor plate made by the Bethlehem Iron Works wasmade at Indian Head, the plate subjected to the test being 77in. in thickness and made of nickel steel. It was one of thegroup intended for the barbettes of the battleship Massachu-v- Us. A 12-in gun was used and two shots were fired. Thefirst shot was at a velocity of 1,401 ft. per second, with a pene-tration of 6 in. or 7 in. The point of the projectile was weld-ed into the plate and the base of the shell demolished. Nocracks were developed and there was no disturbance. Thesecond shot was fired at a velocity of 1,858 ft. per shell is estimated to have entered the plate 10 in. or 11 i
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
