. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. tructing the moulds, serving thereby the purpose of the drag-box. The chief defect entailedby this method, which is indispensable in some cases, is that the moulder has to work in a veryuncomfortable position. Fig. 1284 is an external view of the bed-plate, showing the upper surface, of an early form ofhigh-pressure engine, by no means a form to be imitated, but merely given here for was arranged to maintain six columns, surmounted by an entablature. At one end, 6, a flat form 638 FOUNDING.
. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. tructing the moulds, serving thereby the purpose of the drag-box. The chief defect entailedby this method, which is indispensable in some cases, is that the moulder has to work in a veryuncomfortable position. Fig. 1284 is an external view of the bed-plate, showing the upper surface, of an early form ofhigh-pressure engine, by no means a form to be imitated, but merely given here for was arranged to maintain six columns, surmounted by an entablature. At one end, 6, a flat form 638 FOUNDING. for supporting the cylinder is cast across the plate, stiffened by a deep flange at the edge. Theposition of the cylinder is indicated by the dotted circle. When the cylinder was set in its place,the apertures c c formed continuations of the exhaust steam passages, they were joined into oneshort branch pipe below the platform; c? is a circular passage for the introduction of the steam intothe valve chest. It is projected downwards to the level of the mouth of the eduction pipe, both. ( ) ( ) cz 3 . II III II III II III -^ passages terminating in one large flange, by which the respective pipes leading to them areconnected. Fig. 1286 is a plan of part of the bed plate, including the steam-ways, showing in dotted lines theexhaust passage and tlie flange. Fig. 1287 is a vertical section of the plate and the exhaust passageat the line a b, Fig. 1286. The steam passage also is dotted in behind it. Fig. 1288 is anothervertical section of the same, at the line e e. Fig. 1286, showing in section both of the passages cd. Fig. 1289 is a plan of another portion of the plate, showingthe foundation for a column; Fig. 1290 being a vertical section I2s6. of the same at the line a b\ Fig. 1289. It thus appears that thebed plate is hollow within, and it possesses the form of section,Fig. 1287 all round, interrupted only by the sockets for the feetof the columns. It is a general practice in foun
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectenginee, bookyear1879
