. Cyclopedia of farm crops, a popular survey of crops and crop-making methods in the United States and Canada;. Farm produce; Agriculture. Fig. 835. Sugar-cane loading-derrick in action. it until the sugar will crystallize. Formerly these operations were conducted with very simple apparatus, and even now such crude methods are in use in the less progressive countries. The most primitive wooden or stone rollers driven by direct animal power, will express the juice from good ripe cane, and it may be concentrated without purification in simple open pans. The result is a poor sugar, much m
. Cyclopedia of farm crops, a popular survey of crops and crop-making methods in the United States and Canada;. Farm produce; Agriculture. Fig. 835. Sugar-cane loading-derrick in action. it until the sugar will crystallize. Formerly these operations were conducted with very simple apparatus, and even now such crude methods are in use in the less progressive countries. The most primitive wooden or stone rollers driven by direct animal power, will express the juice from good ripe cane, and it may be concentrated without purification in simple open pans. The result is a poor sugar, much molasses, and the extraction of only a part of the sugar, much of it remaining in the bagasse and going to waste. The most perfect. Fig. 836. Loading cane into cars. Hawaii. mills are only improvements of this simple process. The use of more powerful rollers was the first improvement; then came the multiplication of the rollers, not only because the repeated pressings would remove more juice from the already pressed fiber, but because between the crushings the fiber could be treated with hot liquids, that on being removed by the next set of rollers left the su- crose in a more dilute solution in the bagasse. The amount of moisture that is left in the ba- gasse is determined by the pressure; the amount of sugar is determined, however, by the con- centration of the solution of sucrose in that moisture. Shredding and crushing. — Endless carriers, several feet wide, receive the stalks and elevate them twelve to fifteen feet and dump them into a shredding machine or its equivalent. Here the cane-stalks are torn into fragments by revolving cylinders that somewhat resemble a peg-drum threshing machine in their action. The cane frag- ments pass without further alteration to the first set of rollers. These three corrugated steel rollers are set to press out about three-fourths of the sucrose, an operation easily possible with the best mills. The fiber or bagasse from these rollers is m
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectagriculture, bookyear
