87 (#137) ############################################# CARDING AND CONDENSING may be obtained. If alternate balls of, say, black and white are fed up to a ring doffer condenser (or any carder without rollers which are given a traverse across the swift), a striated film of black and white, which may be arranged to fit the pitch of the doffer rings, will pass through the machine towards the condensing. Under normal conditions the white streak would be taken by one ring, and the black streak by the next ring and so on across the card, and thus solid coloured threads alter- nately of black and white would be produced. If, how- ever, (a) the ring doffer is given a traverse crosswise of, say, the breadth or half the breadth of the striations or card-rings; or (6) the ring doffer is clothed with rings which do not pass concentrically round, but are waved or angled ” to the extent of the striations ; then instead of a solid thread, a thread alternately of black and white-or, as it is termed, a "random " thread -is produced. It is obvious that this method of pro- ducing fancy yarns is capable of being developed : certainly every woollen manufacturer should have at least one of his cards fitted up to produce this effect. The value of carefully considering intermediate card- film production, as illustrated in Fig. 15 is in evidence in Fig. 31. There a film intermediate between the normal narrow Scotch-feed film and the normal full- width Blamire film is illustrated. * * Condensers and Skein (Count) Control The functions of the condenser card are :- (a) to produce and present to the dividing apparatus a perfectly level broad film of material; (6) to neatly and with absolute regularity divide up this film into the desired number of filaments. 87
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