. American engineer and railroad journal . _L_J l_J Fig. 4 ^This style used with narrow rings. Fig. 5 \^ ILia style used with uide rings. Fig. I Fig. 3 plug is cut to receive the ends of the rings, as shown in Figs. 1and 2, or as in Fig. 3. In Fig. 3 the plug has a rib across itscentral portion, and the rings are slotted to fit it closely. Uponthe back of the plug is an extension, shown in Figs. 4 and fits a hole made smaller than the main cavity and it servesto assist in centering the larger hole, while the extension in-creases the effectiveness of the bearing of the plug. The plugmay
. American engineer and railroad journal . _L_J l_J Fig. 4 ^This style used with narrow rings. Fig. 5 \^ ILia style used with uide rings. Fig. I Fig. 3 plug is cut to receive the ends of the rings, as shown in Figs. 1and 2, or as in Fig. 3. In Fig. 3 the plug has a rib across itscentral portion, and the rings are slotted to fit it closely. Uponthe back of the plug is an extension, shown in Figs. 4 and fits a hole made smaller than the main cavity and it servesto assist in centering the larger hole, while the extension in-creases the effectiveness of the bearing of the plug. The plugmay be threaded into this hole, as indicated in Fig. 5, whichillustrates the construction used with wide rings. It will beseen that this joint, as shown in Figs. 1 to 4 inclusive, formsessentially a part of the packing ring. It may adapt itself tooutward or inward movements of the ring, and yet be tightagainst leakage, and the ends of the rings are not exposed tothe steam pressure. The walls of the plugs are fitted flushwith the wearing surfaces of the rings. Large cars for English railroad conditions came up again inMr. J. A. F. Aspin
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
