. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. o parts,c and d^ the requisite elasticity in this case being obtained by the introduction of a packing ring of\J shape. The steam enters the space between the valve rings c and /, through the three oval ports, and itis thence, by the movement of the valve, admitted to and released from the six cylinders succes-eively. The ports to the cylinders are short, as they only have to extend through the plate which ENGINES. 597 divides the cylinders from the valve chest. The engines can thus be made with exceedingl
. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. o parts,c and d^ the requisite elasticity in this case being obtained by the introduction of a packing ring of\J shape. The steam enters the space between the valve rings c and /, through the three oval ports, and itis thence, by the movement of the valve, admitted to and released from the six cylinders succes-eively. The ports to the cylinders are short, as they only have to extend through the plate which ENGINES. 597 divides the cylinders from the valve chest. The engines can thus be made with exceedinglysmall clearance spaces. The exhaust steam escapes past the outer edge of the ring /, and thusenters the outer part of the valve chamber, from which it is let otf by a pipe from the bottom as inFig. 1218. The motion given to the valve greatly tends to promote equal wear, the valve beingquite free to turn round under the action of the eccentric, so that all parts of the rings are broughtsuccessively into contact v^ith the different portions of the faces on which they work. 3218.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectenginee, bookyear1879
