. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . a Ph m 02 tf < a o CO o 3 oO o (N 2 356 STEEL RAILS. INFLUENCE OF DETAIL OF MANUFACTURE 357 * The coal and ore docks of the Baltimore and Ohio Railroad at Lorain,-Ohio, are among the largest on the Great Lakes. The machinery for unload-ing the steamers is the latest design of Brown hoist unloader, driven by elec-tricity and equipped with three grab buckets having a total capacity of 1000tons of ore an hour. Figs. 237 and 238 illustrate a steamer being unloaded
. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . a Ph m 02 tf < a o CO o 3 oO o (N 2 356 STEEL RAILS. INFLUENCE OF DETAIL OF MANUFACTURE 357 * The coal and ore docks of the Baltimore and Ohio Railroad at Lorain,-Ohio, are among the largest on the Great Lakes. The machinery for unload-ing the steamers is the latest design of Brown hoist unloader, driven by elec-tricity and equipped with three grab buckets having a total capacity of 1000tons of ore an hour. Figs. 237 and 238 illustrate a steamer being unloaded atthe dock. The large grab buckets employed scoop up from seven to ten tons of oreeach time they are lowered into the hold of the vessel, after which they arehoisted and carried in over the dock on a movable girder, or ram, carried in aheavily braced portal frame, which is itself movable lengthwise of the dock. The buckets may either be dumped into a 75-ton weighing hopper, fromwhich the ore is discharged directly into cars on any one of the four tracksspanned by the unloader, or droppedinto the trough space, which has acapacity of 100,000 tons, and is sepa-rated by a concrete wal
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Keywords: ., bookcentury1900, bookdecade1910, bookidsteelrailsth, bookyear1913
