Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 857
tside the crank case, operated automati-cally by the governor, which is placed on theshaft outside of the eccentric. The low-pressure valve is of the slide-valve type, whilethat for the high-pressure cylinder is a hollow piston valve, being constructed in thismanner to allow the exhaust from the… … Elevation.
Mechanical drawing
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-graphophonepaten10unit-799-539.webp)
