Modern locomotive engineering, with questions and answers .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co · leaf 791
762 LOCO^IOTIVE ENGINEERING … WALSCHAERT VALVE GEAR 763 points R, R\ R-, R\ etc. On OH we have the full travelvalve circle and OL the lap or radius of the lap circle,the latter being the same for all cut-ofifs, as well as thelead, the radii H\ H-, H^, etc., of the eccentric circles ordiameters of the corresponding valve circles…
Locomotives
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-graphophonepaten02unit-106-41.webp)
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-417-185.webp)
