. Cooley's cyclopaedia of practical receipts and collateral information in the arts, manufactures, professions, and trades including medicine, pharmacy, hygiene, and domestic economy : designed as a comprehensive supplement to the Pharmacopoeia and general book of reference for the manufacturer, tradesman, amateur, and heads of families. n become hard, when they areremoved. As the syrup running from themoulds still contains a large quantity of crys-talline cane sugar, this is recovered as fol-lows : The syrup, after being sufiiciently concen-trated by boiling in the vacuum pan, isremoved aiid
. Cooley's cyclopaedia of practical receipts and collateral information in the arts, manufactures, professions, and trades including medicine, pharmacy, hygiene, and domestic economy : designed as a comprehensive supplement to the Pharmacopoeia and general book of reference for the manufacturer, tradesman, amateur, and heads of families. n become hard, when they areremoved. As the syrup running from themoulds still contains a large quantity of crys-talline cane sugar, this is recovered as fol-lows : The syrup, after being sufiiciently concen-trated by boiling in the vacuum pan, isremoved aiid allowed to cool, when it assumesthe appearance of a crystalline magma knownas crushed sugar. Crushed sugar is a mixture of a largequantity of sugar crystals with uncrystal-lisable syrup. To get rid of this latter fromthe crystals, the mass is placed in quan-tities of 3 or 4 cwts. at a time in a centri-fugal machine. This, of which an engravingis given below, consists, as will be seen, of adrum fixed on a vertical axis. The walls ofthe drum are made of perforated metal, orare formed of meshed wire work, and the drumitself enclosed in an outer metal cylinder,which is fixed, and, of course, the drum is made to revolve on its axisat the rate of 1000 or 1200 revolutions in aminute, the syrup flying off by centrifugal. action, and escaping through the perforationat the sides of the drum, is received intothe outer cylinder, whence it escapes bya trough into a proper receptacle, leavingbehind the crystals in the interior of thedrum. a is an open drum of fine meshed wire-work, caused to revolve in the cast-iron vessel(6 6), by means of the bevel wheels (c d), gear-ing with a motive power. The motion of thedrum can be stopped by means of the brake(e), and regulated by the weights placedat 0. When the crystallisation of sugar is allowecito take place quietly and slowly, the productis sugar candy. The evaporation at a lowtemperature in vacuum pans has the effect ofdiminis
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Keywords: ., bookcentury1800, books, booksubjectrecipes, booksubjecttechnology
