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THE
POPULAR SCIENCE
MONTHLY.
JANUARY, 1878
| THE GROWTH OF THE STEAM-ENGINE.[1] |
By Professor R. H. THURSTON,
OF THE STEVENS INSTITUTE OF TECHNOLOGY.
III.
THE NON-CONDENSING ENGINE, AND ITS APPLICATION IN THE LOCOMOTIVE.
45. The engines of Hero and Branca were, it will be remembered, non-condensing; but the first plan of a non-condensing engine that could have been made of any really practical use is given in the "Theatrum Machinarum" of Leupold, published in 1720. His sketch is copied in Fig. 23. It is stated by Leupold that this plan was sug-
- ↑ An abstract of "A History of the Growth of the Steam-Engine," to be published by D. Appleton & Co.
