these regenerators while a equal to the best average with much less fuel; or, if the peller to which our engraving refers is so to form the blades current of air passes upward through the adjoining regen- usual amount of fuel be used, a highly increased speed of as to impart to the water in which… … lated within the chamber to an apparently un- the screw or by the forward motion of the limited extent, and with a minimum of chim- vessel through the water. The blades are ney draft. Practically the limit is reached at perfectly connected to the hub by short vessel may be obtained. the point where…
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