The Slide Valve Practically Considered (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1865. Excerpt: ... 76 THE SLIDE VALVE PRACTICALLY CONSIDERED. it generally assumes, hence the thickness of the metal may be considerably less than that for the casing. A good proportion is three-eighths to three-quarters of an inch for the thickness of the body part of the valve, and five-eighths to seven-eighths of an inch for the body part of the casing. The flanges in each case should be slightly thicker than the body part. The thickness of the ribs should be less than that of the body as the former are not subject to the full pressure of the steam. In designing the slide valve, whether the ordinary or equilibrium kind, strict attention should be given to the speed of the piston, pressure of the steam, grade of expansion, length of the connecting rod, lead of valve on the piston, &c, matters which have been explained in detail. The only excuse for again reverting to these important facts is, to impress on the non-conversant, that, of all the details of the steam engine, the most important is the "slide Valve." FINIS. Casing, cover of flange of thickness of. Casing flange, position of Casing strains, inside Chord of supply-Chord of expansion. Chord of exhaustion. Chord of neutrality. Compression, chord of course of Condenser, communication with Connecting rod, locality of Common slide valve. Kules. Crank path Crank pin path, delineation of divisions of Crank, position of. Cushioning, cause of Cylinder, capacity of area of Delineation of the eccentric travel Diagrams of common slide valves Diagram of exhaust relief slide valve Diagrams of equilibrium double ported valves Diagram of ratios of connecting rod to crank Diagram of ratio of port to lap. Diagram indicator. Diagram of laps of valves. Diagram of Sells' three-ported va...