Engineering reminiscences contributed to "Power" and "American machinist" (1908)
Porter, Charles T. (Charles Talbot), 1826-1910 · New York, J. Wiley · leaf 297
medrew cast-iron disks, which being polished and vibrating in placeI thought very handsome. They gave me lots of trouble, till Ilearned enough to get rid of them, the story of which I will tellby and by. The front view shows the admission valve stemsbalanced by being extended through at the back… … REVISION OF THE ENGINE DESIGN 229 The first two figures show the valves in section and the adjust-able pressure plate and mode of its adjustment. The closeness ofthe piston to the head may be observed. I never allowed morethan one-eighth inch clearance, and never had a piston touchthe head. This…
