. Cotton and other vegetable fibres : their production and utilisation . in this way, 60 tons, of total value ;^2,6oo,being exported in 1828, 841 tons in 1830, and no lessthan 1,062 tons in 1831. The fibre thus produced bythe natives is of much finer quality than that obtainedby the use of machinery. There are several machines which are used forextracting New Zealand hemp, but they are all con-structed on the same principle. The leaf is intro-duced between horizontal, fluted, revolving feed-rollers, by which it is crushed and held securely whilebeing scraped. As it passes out, the epidermis an
. Cotton and other vegetable fibres : their production and utilisation . in this way, 60 tons, of total value ;^2,6oo,being exported in 1828, 841 tons in 1830, and no lessthan 1,062 tons in 1831. The fibre thus produced bythe natives is of much finer quality than that obtainedby the use of machinery. There are several machines which are used forextracting New Zealand hemp, but they are all con-structed on the same principle. The leaf is intro-duced between horizontal, fluted, revolving feed-rollers, by which it is crushed and held securely whilebeing scraped. As it passes out, the epidermis andparenchymatous tissue are stripped off by means of abeating-drum, revolving more rapidly than the feed-rollers and carrying flanges on its periphery whichpress the leaf against a bar and thus exert a scrapingaction. An arrangement is provided for adjustingthe distance between this bar and the drum, so thatneither can the leaf pass through unstripped nor thefibres be cut. Vulcanised indiarubber cushions orsteel springs are placed over the journals of the upper PLATE X. From the Collections of the Imperial Institute
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Keywords: ., bo, bookcentury1900, bookdecade1910, bookidcottonotherveget00goul
