A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . onstantstream of oil. This oil falls back into the reservoir, and is, of course, above the the spring has run down, it is again wound up; and then the valve opening down-wards allows the oil to flow back beneath the disc, to be again forced up through the the pressure employed is so great, the oil would, but for the modeiator, flow with toomuch rapidity. This moderator, or regulator, is a tapering rod of iron-wire which is placedin the ascendin


A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . onstantstream of oil. This oil falls back into the reservoir, and is, of course, above the the spring has run down, it is again wound up; and then the valve opening down-wards allows the oil to flow back beneath the disc, to be again forced up through the the pressure employed is so great, the oil would, but for the modeiator, flow with toomuch rapidity. This moderator, or regulator, is a tapering rod of iron-wire which is placedin the ascending tube; and, as the pressure increases, it is forced more into it, and checksthe flow of oil; whereas, as it diminishes it falls, and being tapering, allows more oil to ingenious adjustments are introduced into these lamps, as manufactured by theMessi-s. Tylor of Warwick Lane, with which we need not at present deal. The cylinderscontaining the oil are covered with cases in metal or sometimes of porcelain. Two drawingsof these are shown {Jig. 369 sm&Jig. 370). These lamps admit evidently of yet more elegant 303


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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864