. Locomotive engineering : a practical journal of railway motive power and rolling stock . work, are used? Ifso, does it affect the nature of the finishedforging? It is commonly supposed that the out-side of a piece of case-hardened iron ischanged into steel to a greater or lessdepth, according to the length of time theprocess of cementation has been carriedon, and the question comes up, Does thisscrap retain the nature of steel whenworked into a forging? And does itmake the forging any stronger than if itwas all clear wrought iron? Starting a Railroad. One of the most interesting little stori
. Locomotive engineering : a practical journal of railway motive power and rolling stock . work, are used? Ifso, does it affect the nature of the finishedforging? It is commonly supposed that the out-side of a piece of case-hardened iron ischanged into steel to a greater or lessdepth, according to the length of time theprocess of cementation has been carriedon, and the question comes up, Does thisscrap retain the nature of steel whenworked into a forging? And does itmake the forging any stronger than if itwas all clear wrought iron? Starting a Railroad. One of the most interesting little storieswe have heard lately was the way in whichwhat is now the Arkansas Midland wasstarted. It was then called Arkansas Cen-tral, and ran from Helena to Clarendon,on White River. Mr. Albert H. Johnson,then of Oberlin, Ohio, was the man, and First Aid to the Injured. Under the head of First Aid to theInjured, Dr. C. S. Parkhill gives in theTrainmens Journal some interesting factsof this work on the Erie road. They have adopted the plan of selectingan intelligent man at each point, instruct-. SCHENECTADY BOSTON & ALB.\NY EXPRESS ENGINE. inches diameter. The working pressureis 190 pounds to the square inch. Thisgives the engine a little more than tractive power, and the ratio oftraction to adhesion is about 4. The portsare 18 inches long; the steam ports areiH inches wide, and the exhaust port 3inches wide. The bridges are H/s incheswide. The valves are Allen-Richardson,with i^-inch outside lap and maximumtravel of 6 inches. The valve setting is soarranged that the engines have J^-inchlead when cutting off at 6 inches. Thewheels are of cast steel and are held byshrinkage and retaining rings. The bearing surfaces are notably liberal,the driving axle journals being 9 x 11^inches. The main crank pin journals are■6x6 inches, and the side rods forwardand back 4J/2 x 4 inches. The engine truckjournals are 6 x 12 inches. The boiler, as will be seen by the en-graying, is of the
Size: 2447px × 1022px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroa, bookyear1892
