Ludy, Llewellyn V., 1875- [from old catalog], American Technical Society · Chicago, American technical society · leaf 141
gine Running Over Fig. 35. Diagram for Direct Valve,Engine Running Over Definitions. Before explaining the operation for obtainingthe above, it is well to have an understanding of the meaning of theterms direct and indirect as applied to a valve, and of run-ning over and under as applied to an…
Indicators for steam-engines · Steam-engines
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-641-405.webp)
