. American stationary engineering; a practical work which begins at the boiler room and takes in the whole power plant. ction of wroughtiron welded pipes has diminishedthe use of cast-iron pipes formany purposes, especially inheating apparatus and other pipe systems. Its advantages arelightness, the ease with which various lengths can be obtainedand its etrength. Inwrought-iron pipe work the general practice in making joints between pipes is a wrought iron coup-ling, Fig. 118, with taperedthreads at both ends. Thepipes do not meet at their ends,and a recess of about f inch ormore long by the d
. American stationary engineering; a practical work which begins at the boiler room and takes in the whole power plant. ction of wroughtiron welded pipes has diminishedthe use of cast-iron pipes formany purposes, especially inheating apparatus and other pipe systems. Its advantages arelightness, the ease with which various lengths can be obtainedand its etrength. Inwrought-iron pipe work the general practice in making joints between pipes is a wrought iron coup-ling, Fig. 118, with taperedthreads at both ends. Thepipes do not meet at their ends,and a recess of about f inch ormore long by the depth of thethickness of the pipes is left atevery pipe end. A similartapered thread is used in con-necting the cast-iron fittings,elbows, tees, etc., Fig. 119, to thepipe, and a large recess is necessary m each fitting to allow forthe tapping of the threads. Thusthe inside diameter of the fittingis larger by | inch than the om,side diameter of the pipe, andthe internal projection of thethickness of the pipe and that ofthe thread of tho fitting increasesmaterially the fidctioadue to theinterior surfaces of pipe and. .^^? Fig, 118.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsteamen, bookyear1917
