. A manual of marine engineering: comprising the design, construction, and working of marine machinery. liner endwayswith respect to the cylinder (vide fig. 29a). The liners are sometimes securedwithout a flange at the bottom, by screwing studs through the cylinder shelland liner, and making the ends steam-tight as before. The space between the liner and shell should not be less than 1 inch, and 142 MANUAL OF MARINE ENGINEERING. may be filled with steam so as to heat the steam during expansion. If thecylinder has to be jacketed, this is really a better plan of doing it than bycasting the cylin
. A manual of marine engineering: comprising the design, construction, and working of marine machinery. liner endwayswith respect to the cylinder (vide fig. 29a). The liners are sometimes securedwithout a flange at the bottom, by screwing studs through the cylinder shelland liner, and making the ends steam-tight as before. The space between the liner and shell should not be less than 1 inch, and 142 MANUAL OF MARINE ENGINEERING. may be filled with steam so as to heat the steam during expansion. If thecylinder has to be jacketed, this is really a better plan of doing it than bycasting the cylinder and inner cylinder together, as was very generally doneformerly. Independently of the advantage derived from the harder metalof which the liner may be made, compared with that which is suitable for sointricate a casting as a cylinder, there is another very great advantage to themanufacturer. Since it is a necessity that the walls of the cylinders besound and free from sponginess, as well as blow-holes, a casting has often tobe condemned for a defect which in no way detracts from its strength or.
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