. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. METALLURGY. 881 drum. The conical part p, of the funnel has been called etraiiguillon, being strangled, asit were, in order that the water discharged into the body of the trompe shall not fill the 695. pipe in falling, but be divided into many streamlets. Below this narrow part, eight holes,q q, are perforated obliquely through the substance of the trompe, called the vent-holesor nostrils, for admitting the air, which the water carries with it in its descent. The airafterwards parts
. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. METALLURGY. 881 drum. The conical part p, of the funnel has been called etraiiguillon, being strangled, asit were, in order that the water discharged into the body of the trompe shall not fill the 695. pipe in falling, but be divided into many streamlets. Below this narrow part, eight holes,q q, are perforated obliquely through the substance of the trompe, called the vent-holesor nostrils, for admitting the air, which the water carries with it in its descent. The airafterwards parts from the water, by dashing upon a cast-iron slab, placed in the drumupon the pedestal d. An aperture /, at the bottom of the drum, allows the water to flowaway after its fall; but, to prevent the air from escaping along with it, the water as itissues is received in a chest I mn o, divided into two parts by a vertical slide-jdate be-tween m n. By raising or lowering this plate, the water may be maintained at any desi-red level within the drum, so as to give the included air any determinate degree of superfluous water then flows off by the hole o. The air-pipe e, fig. 696, is fitted to the upper part of the drum; it is divided, at thepoint /, into three tubes, of which the principal one is des
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Keywords: ., bookcentury1800, bookdecade1840, booksubje, booksubjecttechnology
