. Railway mechanical engineer . steel. Whencutting with the torch inclined, it should be uprighted justbefore finishing the cut in order to sever the metal at the a w-edge of uncut metal will be left due to theoxygen shooting by the comer as the torch reaches the endof the cut. The drag part of the cut will be left of the torch cuts this portion off cleanly. Expert hand cutters are able to cut one-half-inch steelplate with a very narrow kerf and low oxygen pressure, oftenworking at speeds up to 24 in. per min. and sometimes experienced cutter learn
. Railway mechanical engineer . steel. Whencutting with the torch inclined, it should be uprighted justbefore finishing the cut in order to sever the metal at the a w-edge of uncut metal will be left due to theoxygen shooting by the comer as the torch reaches the endof the cut. The drag part of the cut will be left of the torch cuts this portion off cleanly. Expert hand cutters are able to cut one-half-inch steelplate with a very narrow kerf and low oxygen pressure, oftenworking at speeds up to 24 in. per min. and sometimes experienced cutter learns to follow the cut with greatprecision, going no faster than permissible, but still follow-ing the combustion rate so closely that there is little or noloss of cutting efficiency. The cutter who tries to work toofast loses the cut and makes a mess of things. The cutterwho works too slow wastes gas and time, while the one whoknows just how fast to cut approximates 100 per cent effi-ciency in time and gas.—Autogenous Fig. 4—Cutting 3^-ln. Steel Slabs for Small Electric Locomotive Construction and Maintenance of Cinder Pits Report of American Railway Bridge and Build-ing Association Committee Discusses Three Types CINDER pits may be divided into the following types:(A) Depressed track pits where ashes are loadedinto cars by hand. (B) Dry pits where ashes arereceived in cast iron buckets and loaded into cars by meansof an overhead crane. (C) Water pits, both shallow anddeep, where ashes are removed by clamshells operated by alocomotive or overhead crane and loaded into cars. (D)Miscellaneous pits, where ashes are removed by variousmechanical means. Fig. 1 shows a standard pit used by the Duluth, Mis-
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
