A history of the growth of the steam-engine (1878)
Thurston, Robert Henry, 1839-1903 · New York, D. Appleton · leaf 373
ed, usually, semi-portable engines.These little engines have some decided advantages. Beingattached to one base, the combined engine and boiler is 348 THE STEAM-ENGINE OF TO-DAY. easily transported, occupies little space, and may veryreadily be mounted upon wheels, rendering it peculiarlywell… … Fw. 114.—Semi-Portatle Engine, 1S78. sion, nor are the bearings overheated by conduction or byascending heat from the boiler. The fly-wheel is at thebase, which arrangement secures steadiness at the highspeed which is a requisite for economy of fuel. The boil-ers are of the upright tubular style,…
Steam-engines
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