97 (#147) ############################################# CARDING AND CONDENSING machines—in each case having given the same number of swifts and their accompanying cylinders. In view of the mixing capacities of the intermediate feeds it is not surprising to find that often in the case of ordinary wool- len cards scribbler and condenser only are employed, but that where perfect mixing is required scribbler, intermediate and condenser are almost invariably arranged for—thus giving two intermediate feed mixings. The number of swifts per machine varies consider- ably. For working fine, short wools, four or five small swifts in the scribbler used to be quite common. To-day a breast and four or five swifts per set is ordinarily met with for carding mixtures. The following distribution of five swifts are thinkable : 1 2 3 6 6 7 2 2 I I 2 I 2 I . 2 2 I I I 2 2 Scribbler 3 3 Intermediate 3 Condenser 3 Of these, I and 5 are most commonly in use. Nos. 6 and 7 are actually defective, for it is obviously desirable to effectively open out all locks, etc., before submitting the material to the severe treatment of, say, an inter- mediate Scotch feed. > (d) Driving and Speeding of Cards.-In the list on page 50 standard speeds for the chief cylinders in carding characteristic blends are given. The speeding of a card would probably be worked out as follows :- 1. The swift being the main carrying cylinder of the card would be first speeded, but this would possibly be in relation to the speed of the fancy which must lift* the wool on the swift with- out " throwing" it ; * See "Preface" also, H 97
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