Indian Central Jute Committee. Technological Research. Memoir no. 1. a Technique for Spinning Yarn Samples from Small Quantities of Fibre

The combined results of the tests on the yarn obtained from the blend of cuttings and on the yarn spun from the rest of the fibre will give all the information required to judge the quality of the fibre as a whole STANDARD SPIN FOR 10 lb. [...] If the small quantity of fibre is thrown in the usual way on the moing card-apron the weight per yard of the sliver delivered varies greatly from test to test and the length of the more or less uniform middle portion (between the starting and the finishing "tails") is very short."Fig. [...] the cylinder speed is checked (standard 183 to 185 r.p.m.) and the period between the start of the feeding and the delivery of the tenth yard of sliver is observed. [...] The standard weights fed up at the back of the finisher are not in proportion to the yardage of sliver to be collected mainly because of the different proportion of waste to total fibtc in the different cases. [...] The method used in examining the regularity was to weigh the sliver yard by yard and to note from the results arranged in order the points at which the gradual building up of the sliver to full weight was complete and the point at which it began to tail out at the end.