The new international encyclopaedia . opulation, in1900, WATER WHEEL. A wheel for utilizing the?weight of falling water to perform mechanicalwork. (See Water Power.) The term water wheel is properly applied to all that rotate, but it has come to be re-stricted to wheels which act mainly by theweight of water that the,v receive on their cir-cumferential parts only, which turn on horizon-tal shafts, an<l which move with a low velocityand a velocity that has no relation to the headof water under whiidi the wheel works. In allthese respects water wheels as the term is u
The new international encyclopaedia . opulation, in1900, WATER WHEEL. A wheel for utilizing the?weight of falling water to perform mechanicalwork. (See Water Power.) The term water wheel is properly applied to all that rotate, but it has come to be re-stricted to wheels which act mainly by theweight of water that the,v receive on their cir-cumferential parts only, which turn on horizon-tal shafts, an<l which move with a low velocityand a velocity that has no relation to the headof water under whiidi the wheel works. In allthese respects water wheels as the term is usedhere dillcr from turliines (). Water wdieelsare designated as overshot or breast wheels ac-cording as they receive the water at or near theto]), belov, the centre, or below the top and abovethe centre. The overshot u-hcel has a series of bucketsarranged on its circumference so that, as thewheel rotates forward, in the direction of thehands of a clock, the buckets on the descendingside have their top upwaril. The water is led. OA-ERSHOT WHEEL. to the wheel a trough or flume which dis-charges at the top of the wheel just forward ofa vertical through its axis. This water fills thebuckets and its weight causes the wheel to ro-tate forward. Each bucket is filled as it comesluider the discharge from the flume, and each isemptied as the rotation brings it near the bot-tom. The object of this is to have the weight ofeach bucketful of water act throughout the en-tire vertical distance of the fall. The earlierforms of overshot water wheels were built of
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