A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . o bind together the cast-iron plates of the enclosure, and toprevent the siuiiiiig of the roof from the expansion and contraction of the brickwork. The blast machines are fans,the best form of which is shown in 360 Jiff. 360. (Overman.) The wingsof this fan are encased in a sepa-rate box; a wheel is thus formed,which rotates in the outer box ; thefigure shows a horizontal sectionthrough the axis. The wings arethus connected, and form a closedwheel, in which the
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . o bind together the cast-iron plates of the enclosure, and toprevent the siuiiiiig of the roof from the expansion and contraction of the brickwork. The blast machines are fans,the best form of which is shown in 360 Jiff. 360. (Overman.) The wingsof this fan are encased in a sepa-rate box; a wheel is thus formed,which rotates in the outer box ; thefigure shows a horizontal sectionthrough the axis. The wings arethus connected, and form a closedwheel, in which the air is whirledround, and thrown out at the peri-phery. The inner case, which re-volves with the wings, is fitted asclosely as possible to the outercase, at the centre near a, a, a, speed of the wings is some-times as much as 1,S00 revolutionsper minute. The motion of the axis is produced by means of a leather or india-rubber belt and a pulley. This variety offan is used at the puddling furnaces at Ebbw Tale, where the fuel is small coal. Fig. 361 is a horizontal section of the double anthracite puddling furnace. The grate.
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License: Licensed
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
