OCR Text |
Show Impulse Water Wheels. The growing importance of wter power, resulting from the wide extension ex-tension of tiie electric art, hay compelled com-pelled the designing of several sorts of water wheels and the wider use of those already known. A sample of Iho latter sort is to be sc-on in the accompanying cut, being, what Is called an impulse wheel, as distinguished distin-guished from a turbine. In this case the wheel takes its impulse from a jet of water, which is brought agulnst the buckets shown on the periphery of the wheel. These are of an elliptical form and are very efficient. The water column is brought against one side of the curved bucket, giving an impulse; as it emerges from the bucket it thrusts against the other side of the ellipsoidal bucket and gives anotner impulse, thus availing itself of it3 original force as derived from itti own head, and from its effort ef-fort to get away again from the wheel. This will appear from ' the little sketch herewith, the arrows showing the direction of force in the Inner and outer direction of the water jet. |