. The railroad and engineering journal . , and,like the Putitmi and Pilgrim of the same fleet, is constructed onthe double-hull bracket plate and longitudinal system, givingher seven water-tight bulkheads and 50 water-tight compart-ments. Instead of a compound beam-engine like the Pilgrim,the Plymouth will have four-cylinder triple expansion enginesconnected directly to the main shaft. TliK Minnesota Mining Company has been organized at Du-luth Minn., with $600,000 capita Ito develop a tract of iron landabout four miles from Vermilion Lake and near the line of theDuluth & Iron Range Railroad.
. The railroad and engineering journal . , and,like the Putitmi and Pilgrim of the same fleet, is constructed onthe double-hull bracket plate and longitudinal system, givingher seven water-tight bulkheads and 50 water-tight compart-ments. Instead of a compound beam-engine like the Pilgrim,the Plymouth will have four-cylinder triple expansion enginesconnected directly to the main shaft. TliK Minnesota Mining Company has been organized at Du-luth Minn., with $600,000 capita Ito develop a tract of iron landabout four miles from Vermilion Lake and near the line of theDuluth & Iron Range Railroad. The tract includes 960 acres,and is known to be very rich in iron ore. The Globe Iron Works in Cleveland, O., has completed foursteel steamers for the Minnesota Steamship Company ; theyare intended to carry iron ore from Lake Superior, and have acapacity of 2,Soo tons. Each of these ships is 311 ft. long overall, 40 ft. beam and 24 ft. 6 in. deep. The engines are triple-expansion, with cylinders 24 in., 38 in. and 61 in. in diameter. LEEDS CYLINDBR-BORING AND FACING MACHINE. screws and wrench to facilitate placing cylinders in position forboring, are furnished. When once set (he machine is all rightfor other cylinders of same size. At the Louisville shops of the Louisville & Nashville Rail-road, this machine has been in practical operation for sometime, boring 20 in. cylinders, 33} in. long, counlerbore 2| , finishing them complete, with flanges faced and turned,in less than seven hours each ; this is very rapid work when thecomposition of the metal for cylinders is considered. They aremade of 2,600 lbs. of old car-wheels, chill and all, temperedwith 800 lbs. of No. I charcoal iron, making a very hard, closemixture ; with the ordinary iron that is often used, the time canbe reduced very materially. They do not use facing arms, butplace a side tool in the regular cutter-head and face off with that,doing satisfactory work. This machine was designed by Mr. P. Leeds of the L
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
