Ludy, Llewellyn V., 1875- [from old catalog], American Technical Society · Chicago, American technical society · leaf 151
e-ported valve requires but half the valve travel; this isadvantageous in high-speed engines. To balance the excessive steam pressure, the back of the valveis sometimes provided with a projecting ring which is fitted to asimilar ring within the top of the valve chest. These rings areplaned true and… … Fig. 47. Trick Valve Showing Admissionof Steam Just Beginning Fig. 48. Trick Valve at Extreme RightPosition with Steam Port Open Wide which is so made that a double volume of steam enters during admis-sion. Thus a quick and full opening of the port is obtained with asmall valve travel. VALVE GEARS…
Indicators for steam-engines · Steam-engines
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