. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. of the retted. This is the sole advantage, but it is more than coun-terbalanced by the other drawbacks above specified. In Mr. Wordsworths improved apparatus for heckling flax and hemp, a succession ofstricks is subjected to the operation of several series of revolving heckles of different de-grees of fineness, for the purpose of gradually separating or combing the long fibres, anddressing them smooth ; while at the same time, the tow or entangled refuse portions ofthe material take
. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. of the retted. This is the sole advantage, but it is more than coun-terbalanced by the other drawbacks above specified. In Mr. Wordsworths improved apparatus for heckling flax and hemp, a succession ofstricks is subjected to the operation of several series of revolving heckles of different de-grees of fineness, for the purpose of gradually separating or combing the long fibres, anddressing them smooth ; while at the same time, the tow or entangled refuse portions ofthe material taken off from the stricks by the heckle points are removed from the hecklesby rotatory brushes and rollers covered with wire cards, and discharged into suitablereceivers, whence it may be taken to a carding engine, to be worked in the ordinaryway. The accompanying figures represent in plan and section the heckling machine, whichis made double, for the purpose of allowing two series of stricks of flax to be acted uponat one time. Fig. 426 is a horizontal view of the machine j fig. 427 is an end view, the426 . Y. whole being represented in working order, and the respective letters of reference point-ing out corresponding parts of the machine. A A are two large barrels or drums, upon the surfaces of which are fixed longitudi-nally several series of brass ribs a, b, c, d, e,f, g, h. i, holding heckle points. These ribsare placed at small distances apart round the barrels, all the heckle points standing ra-dially from the axes, and the barrels are mounted upon axles supported by pedestals,?with plummer blocks bearing on the rails of the end frames, b b, are two horizontalwheels or pulleys turning upon vertical shafts, which pulleys conduct an endless chainc c c c, carrying the holders, whereon the stricks of flax or other material intended to beheckled are suspended. At one end of the axle of each of the barrels a toothed wheel d d is made fast, and these FLAX. 4m are connected by a si
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Keywords: ., bookcentury1800, bookdecade1840, booksubje, booksubjecttechnology
