Modern American locomotive engines; their design, construction and management. A practical work for practical men (1883)
Edwards, Emory, b. 1841 · Bridgeport, Conn., Frederick Keppy · leaf 194
Fig. 57. result would be that the steam port could only be per-fectly closed at the precise instant when the valve wasin the middle of its stroke and moving most rapidly.From what has been said it is apparent that a valve ofthis kind (one without lap) is unsuitable for an engine,the better plan…
Locomotives
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
