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Updated: May 21, 2025
This, as its name implies, is a forced draft controlled by a thermostat, and with it the cheaper grades of coal can be used. Incidentally, any coal-burning furnace that gets to sulking can be made to respond by placing an ordinary electric fan before the open ash pit. We have done this with a pipeless furnace and have been able to burn the cheaper buckwheat coal almost entirely as a result.
Our railroad exhibit is not very full: we have a Philadelphia and Reading coal-burning locomotive, a Pullman car, the Westinghouse brake, Stephenson's street-cars, car-wheels from Baldwin's and Lobdell's: the latter also sends calender-rolls of remarkable quality.
"If you succeed in showing me that you can build and operate an electric locomotive that will speed two miles a minute on a level track and will get a heavy drag over the mountain grades, as I said, as surely as two engines of the coal-burning or oil-burning type, I will pay you a hundred thousand dollars bonus, besides buying all the engines you can build of this new type for the first two years.
Coal-burning vessels when moving at any pronounced speed invariably throw off large quantities of smoke, which may be detected easily from above, even when the vessels themselves are completely hidden in the mist. It was this circumstance which revealed the presence of the British squadron in the affair of the Bight of Heligoland.
It generates every kilowatt of current used between Trenton and Albany, the New York metropolitan area included. Except for a few little storage-battery or Diesel generator systems, that couldn't handle one tenth of one per cent of the barest minimum load, it's been the only source of electric current here since 1962, when the last coal-burning power plant was dismantled.
It can especially be seen from these diagrams that an increase of the resistance is immediately and automatically followed by an increased production of steam. This is an important advantage of the soda engine over the coal-burning engine, in consequence of which less skill is required for the regular production of steam power.
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