. Steam engines, a thorough and practical presentation of modern steam engine practice . brass or bronze box lined with a good quality of babbittmetal. The crosshead end 2 is usually, but not always, fitted in asimilar manner to that of the crank end. Adjustment for wear ismade by means of wedges at each end, as shown at 3. These rodsare usually of rectangular cross section, although round shapes some-times are used, especially on small engines. The marine type of connecting rod is illustrated in Fig. body of the rod is forged similar to the locomotive type, as isalso the small, or cros
. Steam engines, a thorough and practical presentation of modern steam engine practice . brass or bronze box lined with a good quality of babbittmetal. The crosshead end 2 is usually, but not always, fitted in asimilar manner to that of the crank end. Adjustment for wear ismade by means of wedges at each end, as shown at 3. These rodsare usually of rectangular cross section, although round shapes some-times are used, especially on small engines. The marine type of connecting rod is illustrated in Fig. body of the rod is forged similar to the locomotive type, as isalso the small, or crosshead, end, but the distinguishing differenceis in the way in which the large, or crank, end is formed. The endof the rod is enlarged and finished square, and the box containingthe crank bearing which is lined with a good wearing material, isfastened to the rod proper by means of the bolts. Adjustment forwear is made by tightening up the nuts on the bolts. It will be seen in Fig. 6 that the connecting rod is the connectinglink between the crosshead and the crank 33, The length of the. Fig. 16. Marine Type ot Connecting Rod cormecting rod bears a definite- relation to the length of the crankradius. The ratio of the length of the connecting rod to that of thecrank radius varies in practice from four to eight. Occasionallyconditions demand a greater ratio than eight, but it is seldom lessthan four. Fig. 17 illustrates the connection of the piston, crosshead, con-necting rod, and crank shaft. The function and construction of thepiston, crosshead, and connecting rod have been previously dis-cussed. However, the figure is valuable in that it shows quiteclearly the relation of the various parts to each other. The crankshaft used on center-crank engines is frequently a solid steel forg-ing, which includes the crank pin 2. Miscellaneous Parts. In order to compensate for the weight ofthe connecting rod and brasses it is necessary to put counterweightson the shaft as shown at 4, Fig. 17.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsteamen, bookyear1920
