Water-power; an outline of the development and application of the energy of flowing water . Fig. 165. to the draft-tube, which rests thereon by a broad flange. Theshaft passes through stuffing-boxes in the side of the flume andrests in bearings outside the flume, which are supported bytimbers bolted to the uprights. The small shafts for manipu-lating the gates pass through stuffing-boxes in the top of theflume. Fig. 166 is a longitudinal section showing the tail-race andpenstock. The latter takes smaller dimensions both in height TUF ^^ ^ r^ AT /-vT X »« THE FLUME. and width from
Water-power; an outline of the development and application of the energy of flowing water . Fig. 165. to the draft-tube, which rests thereon by a broad flange. Theshaft passes through stuffing-boxes in the side of the flume andrests in bearings outside the flume, which are supported bytimbers bolted to the uprights. The small shafts for manipu-lating the gates pass through stuffing-boxes in the top of theflume. Fig. 166 is a longitudinal section showing the tail-race andpenstock. The latter takes smaller dimensions both in height TUF ^^ ^ r^ AT /-vT X »« THE FLUME. and width from the flume, to the soyrce of supply. At thedown-stream end of the flume the thrust tending to push theuprights out of place cannot be met in the same way as at thesides. The floor-plank are extended a couple of feet, and onthe outer ends are bolted the timbers A A which sustain thepressure against the uprights. The pull upon the uprights ishere met by iron rods joining the deck to the floor. At the influx of the penstock it is usually necessary to makea water-tight connection with the masonry of the dam, or canalwall. This is shown at Fig. i66^, where the plank arc spikedto timbers built into the masonry. The walls of the flume aresometimes of masonry, and the floor of timber. In this casethe ends of the cross-timbers are firmly built into the masonry,and the jont between the plank and the latter ma} be calkedwith oakum and paid with tar. The joint at the ends of theplank is arranged as at Fig. i66^. The end cross-timber ispartly im
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecthydraulicengineering
