The Locomotive . ensile or compressiveforce less than is required in the material now used. In regard to the matter of design, he expresses himself as preferring asingle riveted girth joint to the double riveted one, whenever the strength ofthe single joint is sufficient. There is some satisfaction in noting this par-ticular conclusion, as it is in accord with the practice that has prevailed in theUnited States for many years past. 1907.] THE LOCOMOTIVE. 233 In his final paragraph, Mr. Sulzer says: The facts here narrated indicatethat the calking of the inner plate-edge, that is in contact wit
The Locomotive . ensile or compressiveforce less than is required in the material now used. In regard to the matter of design, he expresses himself as preferring asingle riveted girth joint to the double riveted one, whenever the strength ofthe single joint is sufficient. There is some satisfaction in noting this par-ticular conclusion, as it is in accord with the practice that has prevailed in theUnited States for many years past. 1907.] THE LOCOMOTIVE. 233 In his final paragraph, Mr. Sulzer says: The facts here narrated indicatethat the calking of the inner plate-edge, that is in contact with the water, wouldbe likely to make the joint more permanently tight than it can be expected to bewhen the calking is done on the outer edge, which is subjected to greater varia-tions of temperature. We cannot entirely agree with him here. The internaledges of plates are sometimes calked in this country; but when this is done, theouter edges are usually calked also, for a variety of reasons. In the first place, L. Fig. 5. — Illustrating the Tapered-Pin leakage develops at the joint from any cause, after the boiler is put in service,it is difficult to re-calk the inner edge of the plate, because it is almost inaccess-ible; and therefore the outer edge will have to be calked, anyhow, in case ofsuch leakage developing. Again, leakage is sometimes due to the fact thatcertain of the rivets do not fill their holes perfectly, so that water finds its wayunder the heads of such rivets, and so into the space between the laps of thesheets; and a leakage of this nature obviously would not be prevented by internalcalking alone. Boiler Explosions June, 1907. (197.)—A tube ruptured, June 1, in a water-tube boiler in the powerstation of the Philadelphia Rapid Transit Co., Second and Wyoming Sts.,Philadelphia, Pa. (198.)—A small hot water boiler exploded, June 3, in Jacob Miller Sons& shirt factory, Philadelphia, Pa. (199.)—A number of cast-iron headers fractured, June 3, i
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Keywords: ., bookauthorhartfordsteamboilerin, bookcentury1800, bookdecade1860
