e disk valves, but a form of sealing ringis said to perform this function effectively. These ringsare set into ring grooves in the valve seats surroundingthe valve ports therein. Another important problem inconnection with an engine of this kind is the lubricationof the valve mechanism. In the… … Sectional Views of Stevens Rotary Valve Englni Measuring Surface Tension THE common method of determining surface tensions,by means of capillary tubes, is subject to the dis-advantage that long capillary tubes of uniform bore arehard to find as well as to keep clean; besides, the menis-cus is…
Automobiles · Aeronautics
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