. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . of thewarper, being held l)y weight. Many im|)rovenu>nts have been nuide in this machine since its introduction, and it is nownmch easier handled ;ind attended. Tirinfinr/.—In twisters the same radical change has taken place as in frames—that is,liigher speed, by the introduction of the modern type of spindle. The Sherman form of the COTTON-SPINNING MACHINERY. 151 Rabbeth type has been most extensively introduced
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . of thewarper, being held l)y weight. Many im|)rovenu>nts have been nuide in this machine since its introduction, and it is nownmch easier handled ;ind attended. Tirinfinr/.—In twisters the same radical change has taken place as in frames—that is,liigher speed, by the introduction of the modern type of spindle. The Sherman form of the COTTON-SPINNING MACHINERY. 151 Rabbeth type has been most extensively introduced, and, although they are of necessitymuch larger and heavier than spinning-spindles, the same principles seem to apply with equallygood results. The Hopedale Machine Co. was the first to equip twisters with improvedspindles, as they started with the Sawyer. Their machine (Fig. 17) is a good illustration ofsteady improvement. It is very heavily built and most conveniently arranged for changingtwist. Besides the spindles, they are lately introducing a marked improvement, in the formof a stop-motion, the simplicity of which can not but commend itself. Other stop-motions in. use are of such a complicated nature that their introduction has been extremely limited. Thisone is applied where a single bottom and top roll are used, the top roll having bearings on aninclined track so arranged that if the thread breaks between the spindle and the roll, the rollwill run down the track and stop the delivery, preventing roll waste and damage resultingfrom winding on the lower roll. With two-ply yarn it will act if either strand breaks back ofthe roll. They also have a new ring-rail for wet twisting, which is made of a strip of rolledbrass having flanges so arranged that the rail is reversible. Reeling, Quilling, etc.—Yerj little change is noted in reels and quillers of the usual sort,but a new class has arisen, first introduced by Mr. Straw, of the Amoskeag Co., who invented amachine for
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
