Ludy, Llewellyn V., 1875- [from old catalog], American Technical Society · Chicago, American technical society · leaf 109
se … Vi. Fig. Valve with Inside and Outside Lap Set for Admission sion and compression possible. It is also evident that steam cannot be admitted until the valve uncovers the port by moving frommid-position a distance equal to 0 C. Admission continues untilthe valve returns to such a position that the…
Indicators for steam-engines · Steam-engines
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