. American engineer . firce F/a/e Fig. 2—Turning and Boring the Shell. diameter. But all this work, which was done, for the mostpart, with a file, was long and expensive; while the ringsmade in this manner were not round, but tended to assume anoval shape as in Fig. 9, which caused constant leakages andunequal wear in the bushings and cylinders. Furthermore, thismethod was frequently very annoying, because the workmanwho made the rings was obliged to wait for the valve bodiesand piston heads to be finished in order to get the exact diam-eter and width of the grooves. In order to avoid these in
. American engineer . firce F/a/e Fig. 2—Turning and Boring the Shell. diameter. But all this work, which was done, for the mostpart, with a file, was long and expensive; while the ringsmade in this manner were not round, but tended to assume anoval shape as in Fig. 9, which caused constant leakages andunequal wear in the bushings and cylinders. Furthermore, thismethod was frequently very annoying, because the workmanwho made the rings was obliged to wait for the valve bodiesand piston heads to be finished in order to get the exact diam-eter and width of the grooves. In order to avoid these inconveniences, a complete changehas been made in the method of machining rings for both the 4 yarrs tor Holdii■3hell Bucking RoHer. Fig. 3—Cutting Off the Rings. valves and cylinders, and now all of the work is done on thelathe, and no attention is given to any other workman. In the present method the different operations may be dividedin two classes, viz.: Those that can be performed in advance,thus working in with the regular shop routine, and those whichcan only be done after the measurements of the grooves inthe valves have been obtained. The two series of operations include: (1) The roughingoff of the shells and the cutting of the rough rings; (2) thecutting of the rings to width, the cutting of the slot and theturning of the outside and inside eccentrically. In any well-organized shop there should always be on handenough rough rings to fit out one or two engines of each should be prepared in what may be called leisure time.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
