. Appleton's dictionary of machines, mechanics, engine-work, and engineering. This form of spout is represented in Fig. Wll. It has not been in very general use in this country,although examples are still met with; but it is still very commonly employed in Europe, espe-cially in France, where it bears the significant name of ducks-bill. In some cases, also, the spout isattached to the feed-box or small reservoir formed over the wheel in some works, where the water isbrought forward from the main dam by a large pipe or covered conduit passing along the surface ofsome intervening ground situated
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. This form of spout is represented in Fig. Wll. It has not been in very general use in this country,although examples are still met with; but it is still very commonly employed in Europe, espe-cially in France, where it bears the significant name of ducks-bill. In some cases, also, the spout isattached to the feed-box or small reservoir formed over the wheel in some works, where the water isbrought forward from the main dam by a large pipe or covered conduit passing along the surface ofsome intervening ground situated on a lower level than the summit of the wheel, and sometimes entirelyunder ground, when it is necessary to keep the surface free of interruption for any particular reason, asthe crossing of a road and the like. In this arrangement, there is always a certain amount of loss ofhead incurred by the passage of the water through the conduit, which must be taken into account in theconstruction of the wheel. The effect of this diminution of head-pressure is to prevent the water f
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Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
