Practical mechanical drawing and machine design self taught .. (1907)
Westinghouse, Charles. [from old catalog] · Chicago, F. J. Drake & co. · leaf 133
s perfectly balanced so far as thesteam pressure is concerned, and the only frictionto be overcome is that due to the small sidepressure necessary to keep the valve steam tight.Piston valves are made steam-tight in much thesame way as ordinary pistons, but since theamount of the motion of the valve… … Fig. 208—Simple Expansion, Piston-valve Engine, endElevation. flange varies in practice from 1.2 to 1.4 times tliethickness of the cylinder barrel. The width ofthe flange is determined by the size of the boltsfor securing the cover to the cylinder. The dis-tance from the center of the bolts to the…
Mechanical drawing · Machine design
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