. Railway mechanical engineer . merly chiseledout, but the torch is now cutting them out in one-tenth thetime. No damage is done to the cylinder wall by the cutting. Heavy sections of cast iron are easily disposed of, as maybe illustrated by the cutting up of a hub of a propeller. Acloud of smoke usually conies from the graphitic carbon inthe cast iron. Fig. 5 gives a good idea of the slot, or kerf,made by the cutting torch, while Fig. 6 reveals the char-acter of the cutting as the two parts of the hub are cut is rougher than would be found in a more importantjob. This scrap cast
. Railway mechanical engineer . merly chiseledout, but the torch is now cutting them out in one-tenth thetime. No damage is done to the cylinder wall by the cutting. Heavy sections of cast iron are easily disposed of, as maybe illustrated by the cutting up of a hub of a propeller. Acloud of smoke usually conies from the graphitic carbon inthe cast iron. Fig. 5 gives a good idea of the slot, or kerf,made by the cutting torch, while Fig. 6 reveals the char-acter of the cutting as the two parts of the hub are cut is rougher than would be found in a more importantjob. This scrap casting was a problem to its owners. Itcould not be smashed, it dare not be thrown overboard, it looked as if it would have to be buried to get it out of theway, when the cutting torch proved to be the solution. The cost figures for this job may be of interest. Theywere: Oxygen $ Acetylene Labor Total $ There are many other cases in which the oxyacetylenecutting of cast iron has proved of good advantage, such as. 6—Cast-iron Propeller Hub AfterCutting Tor :y Oxyacetylene the beveling for big cast iron welds, cutting cast iron pipe,cutting up the cast iron bases of machines, making altera-tions in iron castings in locomotive shops, and other similarwork. Ball Bearing Nut for Valve Bushing Puller The work of pressing in or removing piston valve chamberbushings as ordinarily performed, is a laborious task. Power-operated devices for doing this work often are not satisfac-tory Ijecatlse they are unwieldy and require considerable time
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
