. The Locomotive. LL,W. B. CASSILY, R. K. McMURRAY,WM. G. PIKE,JOSEPH ,WM. U. FAIRBAIRN,B. M. LORD,H. D. P. BIGELOW,J. S. WILSON,F. S. ALLEN,J. H. RANDALL,A. C. GETCHELL,J. S. WILSON, New York Citt. Philadelphia. Baltimore. Boston, Mass. Providence, R. I. Chicago, III. St. Louis, Mo. Hartford. Bridgeport. Cleveland. Cincinnati. OFFICES. OflBce, 285 Broadway. 430 Walnut St. 10 So. Ilolliday St. 10 Pemberton Sq. 15 Weybosset St. 115 Munroe St. 404 Market St. 218 Main St. 328 Main St. 246 Superior St. 53 West Third St. Wkt X0r0m0tit^. PUBLISHED BY THE HARTFORD STEAM BOILER INSPECTION AND IN
. The Locomotive. LL,W. B. CASSILY, R. K. McMURRAY,WM. G. PIKE,JOSEPH ,WM. U. FAIRBAIRN,B. M. LORD,H. D. P. BIGELOW,J. S. WILSON,F. S. ALLEN,J. H. RANDALL,A. C. GETCHELL,J. S. WILSON, New York Citt. Philadelphia. Baltimore. Boston, Mass. Providence, R. I. Chicago, III. St. Louis, Mo. Hartford. Bridgeport. Cleveland. Cincinnati. OFFICES. OflBce, 285 Broadway. 430 Walnut St. 10 So. Ilolliday St. 10 Pemberton Sq. 15 Weybosset St. 115 Munroe St. 404 Market St. 218 Main St. 328 Main St. 246 Superior St. 53 West Third St. Wkt X0r0m0tit^. PUBLISHED BY THE HARTFORD STEAM BOILER INSPECTION AND INSURANCE COMPANY. New Series—Vol. IV. HARTFORD, CONK, MARCH, 1883. No. 3. Dome Connections for Steam Boilers. There are a variety of opmioiis among engineers as to the necessity of domes onboilers, and without discussing that question, which has already been discussed in thecolumns of the Locomotive, we will consider the best method of making the connectionbetween the base of the dome and the shell of the Fig. 1. The accompanying illustrations show several methods ot connection. Fig. 1 showsa very common way of constructing and attaching a dome. In this the base of thedome is simply flanged and riveted to the shell, with either a single or double row ofrivets, the opening in the shell being the full size of the dome. This construction cannotbe recommended in any case. For, if we examine the strains resulting from steampressure we shall find that the effect is to separate the sides at the lowest points of thedome, B and C, Fig. 2, and depress the point D. The result of this is to bring a severestrain on the shell and flange at the points B and C, which is usually very manifest intesting a new boiler to about one-third of its calculated bursting pressure. Thistendency may be resisted by putting in a stay bolt as shown in Fig. 2, or by other meansto be described further on. We do not advise the use of the stay bolt in new boilers,but old ones may sometimes be very much s
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