A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . ei-sing the copper coil d, and filling the steam-jacket, the condensed water issuing from a small pipe below, c represents the dome of thevacuum-pan, the vapor from which passing in the direction of N, allows any particles ofsugar carried over by the violence of the ebullition to be deposited in the receiver m. SUGAR. 1031 The vapor is condensed by jets of cold water issuing from a perforated pipe, and thewater, uncondensed vapor, and air are removed by the acti
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . ei-sing the copper coil d, and filling the steam-jacket, the condensed water issuing from a small pipe below, c represents the dome of thevacuum-pan, the vapor from which passing in the direction of N, allows any particles ofsugar carried over by the violence of the ebullition to be deposited in the receiver m. SUGAR. 1031 The vapor is condensed by jets of cold water issuing from a perforated pipe, and thewater, uncondensed vapor, and air are removed by the action of a powerful air-pump, l isthe measure cistern, from which the successive charges are admitted into the pan ; i and krepresent respectively a thermometer and a barometer, the former being required to indicatetiie temperature of the boiling syrup, and the latter the diminished atmospheric pressurewithin the pan. p is the discharge-cock, and ii, the proof-stick, is an ajjparatus inserted air-tight into the cover of the vacuum-pan, and which dips down into the syrup, serving to takeout a sample of it, witliout allowing 036 635. air to enter. It is shown in detailhy fig. 039, which rejjresents a cylin-drical rod, capable of being screwedair-tight into the pan in an obliquedirection downward. The upper orexterior end is open; the under,which dips into the syrup, is closed,and has on one side a slit a {, 639), or notch, about i in. this external tube there is anothershorter tube b, capable of movinground it, through an area of 180°.An opening upon the under end ccorresponds with the slit in the outer ^ cl|rtube, so that both may be made to L^-coincide. Jig. 635, a. A plug d isput in the interior tube, but so as not to shut it entirely. Upon the upper end there is aprojection or pin, which catches in a slit of the inner tube, hj which this may be turnedround at pleasure. In the lower end of the plug there is a hole e, which can be placed incommunication with the
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
