Technology
The Sections entitled "Alba F. Smith" and "Seth Wilmarth" appear in the original as boxed "side bars". They have been moved, along with Figure 13, from their original locations to the end of the paper to preserve the flow of the text.
After the early 1840's the single-axle locomotive, having one pair of driving wheels, was largely superseded by the 8-wheel engine. The desire to operate longer trains and the n...
1. Part 1The Sections entitled "Alba F. Smith" and "Seth Wilmarth" appear in the original as boxed "side bars". They have been moved, along with Figure 13, from their original locations...
3. Part 3The valve gear is of the Stephenson shifting-link pattern (see fig. 27), a simple and dependable motion used extensively in this country between about 1850 and 1900. The author...