. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. all rods passed through the eyes of the stiffeningirons. The ends are made with shoulders which bear upon the upper side of the plate, Fig. 1332,which may be understood from the form of the prints in Fig. 1329. The horizontal parts of thecores are supported at their proper distance off the loam work beneath them, by steeples or nailsstuck into it. 652 FOUNDING. The mould and the cores having been well dried, they are dressed and smoothed where neces-sary, and finished with a coat of coal powder. Fig. 1331
. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. all rods passed through the eyes of the stiffeningirons. The ends are made with shoulders which bear upon the upper side of the plate, Fig. 1332,which may be understood from the form of the prints in Fig. 1329. The horizontal parts of thecores are supported at their proper distance off the loam work beneath them, by steeples or nailsstuck into it. 652 FOUNDING. The mould and the cores having been well dried, they are dressed and smoothed where neces-sary, and finished with a coat of coal powder. Fig. 1331 is a vertical section of the whole mould, showing all the parts fitted to one another,so as to contain among themselves the vacant space, indicated by a white ground, into which themetal is delivered. The main core pp is lowered upon its rings, from which it is never separated,into a pit dug in the floor of the foundry. The exhaust-passage core is next deposited in its exactposition in its place on the top of the lower part of the cope, being sustained in the usual manner 1333. fMssm^^^^^^^ ^T^m^\^s^s^s^^^^^ss^^ss^s^sssss^^^^^^^^ 1335. ofl the core by chaplets made of two pieces of strong hoop iron, riveted on the ends of two studs, soas to have the necessary thickness of space. The lower part of the cope thus furnished is nextlowered over the main core, into its place upon tlie core ring, thus surrounding the core, and con-taining with it a space between, as indicated in the figure. Another set of chaplets are depositedupon the exhaust core, which, by being in contact with the upper half of the cope when placedabove, prevent the core from floating otf its seat when immersed in the flowing metal. The upper part of the cope having been let down into its place, the face plate, with its coresfixed to it, Fig. 1332, is let down in front of the vacancy in the side of the cope, till it arrives at theproper height, when it is set close into its place, and the end of the exhaust
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectenginee, bookyear1879
